THORLABS WFS20-14AR Operation Manual Download | Manualshive

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© 2007 - 2018 Thorlabs

14

Wavefront Sensor

4 Getting Started

4.1 Parts List

For item numbers with the following

Wavefront Sensor Head

, verify that you have received the

following components within the package:

WFS20:

1. Wavefront Sensor Head with Dust Cover
2. Control Box with two Mounting Clamps
3. 12 V/1.5 A DC Power Supply with Location-Specific Power Cord
4. Power over Camera Link Cable (PoCL), with one angled and one straight connector, to

connect the Sensor Head to the Control Box

5. USB 2.0 High-Speed Cable, A to Mini-B, 2.0 m
6. SM1A9 C-Mount to SM1 Adapter for Optical Accessories
7. Wavefront Sensor Quick Reference Manual
8. Mounted Microlens Array(s)

If a single MLA was ordered it will be mounted on the sensor head at the factory. If mul-
tiple MLAs are ordered, one mounted MLA of choice will be placed on the sensor head
and the others will be packaged separately. A tool for removing and replacing the mounted
MLA will also be included.

WFS30 or WFS40:

1. Wavefront Sensor Head with the adapter plate with metric (M4 and M6 threads) or imper-

ial ( 8-32 and 1/4"-20 threads) mounting and Dust Cover

2. USB 3.0 High-Speed Cable, A to Micro B, 3.0 m
3. SM1A9 C-Mount to SM1 Adapter for mounting to Optical Accessories
4. Wavefront Sensor Quick Reference Manual
9. Mounted Microlens Array(s)

If a single MLA was ordered it will be mounted on the sensor head at the factory. If mul-
tiple MLAs are ordered, one mounted MLA of choice will be placed on the sensor head
and the others will be packaged separately. A tool for removing and replacing the mounted
MLA will also be included.

Optional Accessories

·

Additional, Exchangeable Mounted Microlens Arrays

·

Trigger Cable

4.2 Installing Software

Download the Wavefront Sensor software ZIP archive from the

, unpack it and

open the installation folder to start the installation by double-clicking the setup.exe file.

Note

Do not connect the Wavefront Sensor to the PC prior to installing the software!

Attention

Exit all running applications on your PC as the installer may require a reboot of your PC
during installation!

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Summary of Contents for WFS20-14AR

Page 1: ...Sensors Shack Hartmann Operation Manual 2018 WFS20 5C M WFS20 7AR M WFS20 14AR M WFS20 K1 M WSF20 K2 M WFS30 5C M WFS30 7AR M WFS30 14AR M WFS30 K1 M WSF30 K2 M WFS40 5C M WFS40 7AR M WFS40 14AR M WFS...

Page 2: ...Copyright 2007 2018 Thorlabs Version Date 5 0 19 Jul 2018...

Page 3: ...21 5 2 Graphical User Interface GUI 22 5 2 1 Menu Bar 22 5 2 1 1 File Menu 23 5 2 1 2 Setup Menu 43 5 2 1 3 Measurement Menu 43 5 2 1 4 Calibration Menu 47 5 2 1 5 Display Menu 47 5 2 1 6 Help Menu 4...

Page 4: ...al Beam and Pupil Diameter 110 8 3 Trigger Input WFS20 111 8 4 Trigger Input WFS30 and WFS40 113 8 5 Zernike Fit and Zernike Modes 116 8 6 Example Zernike Calculations 118 8 7 Data Flow Chart 119 8 8...

Page 5: ...Drawing WFS40 14AR 139 8 9 20 Drawing WFS40 14AR M 140 8 10 Safety 142 8 11 Certifications and Compliances 144 8 12 Warranty 145 8 13 Copyright and Exclusion of Reliability 146 8 14 List of Acronyms 1...

Page 6: ...international partners are looking forward to hearing from you Thorlabs GmbH Warning Sections marked by this symbol explain dangers that might result in personal injury or death Always read the assoc...

Page 7: ...ors can also be purchased in kits with two MLAs Wavefront Sensor Heads WFS20 High Speed Wavefront Sensor Head High Resolution 1440 x 1080 pixel CMOS Camera Rectangular 7 20 mm x 5 40 mm Active Area Ex...

Page 8: ...so section Microlens Data In addition to WFS products that include a single mounted MLA kits are available that include two mounted MLAs Please see the available WFS Products and Accessories For other...

Page 9: ...luded in the respective products please see the section Parts List WFS kits with 2 MLAs You may order a WFS Wavefront Sensor calibrated with two included mounted MLAs in a kit Item s Wavefront Sensor...

Page 10: ...ur complete WFS sensor including existing mounted MLA and control box for WFS20 for the upgrade to the Thorlabs factory Example Send the WFS30 14AR to Thorlabs 3 Upon receipt of your WFS the sensor he...

Page 11: ...able ac cording the USB 3 0 specification as supplied A USB 2 0 port will slow down the performance A USB 1 1 full speed port is not sufficient Running multiple Wavefront Sensors in parallel using one...

Page 12: ...is centered behind the lens that generated it only if the incident wavefront is planar and parallel to the plane of the lenslets These are the Reference Spot Positions also known as the Reference Spo...

Page 13: ...etector which usually is equal to the focal length of the microlens fML Spot deviations dx and dy are determined by calculating the centroid coordinates of all detect able spots and subsequently subtr...

Page 14: ...the z direction towards the entrance aperture of the Wavefront Sensor The graphs in the Wavefront Sensor GUI Spotfield Beam View are defined in the same way the posi tive X axis points rightwards and...

Page 15: ...2007 2018 Thorlabs 3 Coordinate Definitions 13 Wavefront Graph...

Page 16: ...e included WFS30 or WFS40 1 Wavefront Sensor Head with the adapter plate with metric M4 and M6 threads or imper ial 8 32 and 1 4 20 threads mounting and Dust Cover 2 USB 3 0 High Speed Cable A to Micr...

Page 17: ...l Head 3 Control Box Power Supply Input 4 Trigger Input 5 USB 2 0 Connector 6 Status LED Red USB connected driver not yet installed Green Ready Operating Elements WFS30 x WFS40 x Series 1 Exchangeable...

Page 18: ...r shipment The software will automatically recognize the WFS Note When connecting the wavefront sensor head to the PC for the first time Windows may show an erroneous error message The device driver s...

Page 19: ...rradiation and use laser protection glasses to protect your eyes In order to achieve reliable wavefront measurement results it is necessary to understand the measurement technique as well as the influ...

Page 20: ...dels This allows the instrument to be mounted on standard Thorlabs posts The C Mount thread of the camera aperture allows other optical components to be mounted directly to the WFS Use the included Th...

Page 21: ...e If no entry can be seen click Refresh to update the list of available Wavefront Sensor instru ments If there is still no instrument displayed please refer to the Troubleshooting chapter The recogniz...

Page 22: ...re is not the MLA physically installed on your Wavefront Sensor the measurement data will be incorrect because the software will use calibration data for the wrong MLA The Wavefront Sensor GUI opens a...

Page 23: ...nsisting of 5 tabs 6 Status bar The GUI attributes can be adjusted according to your preferences When exiting the applica tion the actual settings are saved and will be applied when starting the appli...

Page 24: ...ttings camera pupil wavefront as well as display and graphical settings Assign a meaningful individual name to the configuration file Save Spotfield Image Raw saves the Spotfield Display as a bmp imag...

Page 25: ...mes up Select the location for the saved data file select a file name and click Save The content and format of the saved data is defined in the Measurement File Preferences panel see previ ous page Pr...

Page 26: ...splay parameters take immediate effect Click OK or close the panel to save the actual settings Click Cancel to discard all changes that were made after opening the panel the settings will be reverted...

Page 27: ...a trigger slope is selected the WFS waits for the trigger event at the electrical input Until the trigger is received no wavefront measurement or screen update take place This state is indicated by t...

Page 28: ...area can be analyzed by the instrument When the input aperture is overfilled the Wavefront Sensor can still provide correct results However the pupil parameters must be selected carefully see Pupil De...

Page 29: ...by the number of averages ie 100 This way a pseudo rolling average across the last 3 10 30 or 100 images is retrieved This type of averaging does not slow down the up date rate on the screen Exposure...

Page 30: ...brightness level offset for all illu minated pixels It should be adjusted so that the entire minimum line in the Lineview panel is below zero and the entire maximum line is above zero In the case of...

Page 31: ...s within the unit circle Consequently a wavefront reconstructed from selected Zernike functions can be calculated and displayed only within the pupil area The Zernike calculations which require a circ...

Page 32: ...e pupil size should be set manually An elliptical pupil can be set up by entering different values for X and Y diameter In this case the geometric mean of the el lipse dimensions defines the diameter...

Page 33: ...be switched off when entering the High Speed Mode of WFS20 instruments because the beam centroid cannot be measured with a sufficient accuracy in High Speed Mode Limit Wavefront Calculation and Displ...

Page 34: ...unding frames and holders This way measurement errors due to uncertainties in detecting spot centroids at the border of the target area can be prevented Setting up the AOI Set the AOI in the Pupil Def...

Page 35: ...8 Thorlabs 5 Operating Instruction 33 AOI Display Spot Field panel Display Double click onto the Spot Field image to open its configuration Option Show AOI determines if a user defined AOI is displaye...

Page 36: ...limited by the AOI as well and wavefront points outside are not dis played Numerical calculations like the Wavefront Peak to Valley or RMS and the entire Zernike calcu lation are also reduced to the a...

Page 37: ...tating that the phys ically installed WFS MLA must match the software selection Attention Make sure that the MLA selected in the software is the same as the MLA physically installed in your Wavefront...

Page 38: ...ibration op tions It is necessary to provide the optical input reference when performing a user calibration The planar wavefront user calibration option can be used to record a reference of an arbitra...

Page 39: ...allows to omit the average tip and tilt prior to wavefront and Zernike calculations Note The average wavefront tip and tilt will not be removed completely Small relics are still visible in terms of Z...

Page 40: ...izing a total number of 66 Zernike modes Auto If Auto is enabled the Zernike order is set to the highest possible value that is feasible The highest number of Zernike modes must not exceed the amount...

Page 41: ...the Wavefront panel The numerical value Peak to Valley PV and RMS wavefront distortions depend on this mode selection as well For a complete reconstruction using all calculated Zernike modes Select al...

Page 42: ...fps is an indication of the measurement speed Speed up the measurement If the WFS software is connected to the DataSocket interface the software is used as a data source for a user application that i...

Page 43: ...ormation please see section Data Socket for Live Data Transfer Note Since the DataSocket interface of the Wavefront Sensor software is not capable of controlling the measurement parameters of the Wave...

Page 44: ...block the data transfer DataSocket for live data transfer Click Disconnect to shut down the connection to the DataSocket server If you Close the configuration panel the data connection holds up until...

Page 45: ...the desired wavefront includes small distortions To perform a user calibration the de sired wavefront is used as an optical input The resulting User Calibrated reference can then be used in place of...

Page 46: ...ls for insufficiently illuminated regions of the camera sensor Although no er ror occurs the corresponding area will be excluded from further wavefront measurements 1 Select the Internal Reference in...

Page 47: ...bration Go back to Step 4 Click Do Calib ration to perform the user calibration and the following message verifies successful opera tion 7 You are asked to save the reference data to a file Click Yes...

Page 48: ...will be excluded from further wavefront measurements 1 Select the Internal Reference in the Wavefront Sensor Setup Panel 2 Adjust the light source start the calibration procedure using Menu Calibrati...

Page 49: ...s play Panels 5 2 1 6 Help Menu Contents F1 This opens the Wavefront Sensor software help file Visit the Thorlabs Website Open the Thorlabs website at www thorlabs com View License Agreement Display t...

Page 50: ...oes not appear in the status window you cannot rely on the meas urement results Please refer to Measurement Warnings and Errors for a listing of possible errors Beam Data Calculated from the centroid...

Page 51: ...n the pupil center have more weight than lower intensity spots away from the center Fourier Constants The Fourier Constants M J0 and J45 are derived from the Zernike coefficients Depending on the sett...

Page 52: ...the reduced accuracy of of RoC v played in the following format RMS Variations Since the Zernike modes are normalized to unity variance all Zernike coefficients of a particu lar order can be summed a...

Page 53: ...will lead to low or sat urated peak intensities or to saturation Avoid this by a proper adjustment of the Exposure Time and Master Gain see section Camera Settings The Black Level setting of the came...

Page 54: ...pper curve white displays the maximum and each point of the lower curve gray displays the minimum intensity of the appropriate sensor column Switch to Show Single Line in order to enable selection of...

Page 55: ...Settings panel The Camera Image Size should be chosen slightly larger than is required to display the entire beam This ensures that the entire beam is analyzed as well as minimizing the unused area o...

Page 56: ...e graphical items Show Image Axes displays the center axis in horizontal and vertical directions Mark Center Spot marks the spot at the image center that acts as the starting point for the centroid de...

Page 57: ...eld panel display in High Speed Mode right consequently depicts the centroid location of each spot within the defined spot window green lines This display allows the user to observe whether the spots...

Page 58: ...n this function is enabled the position and size of the AOI is shown in yellow and the Zernicke calcu lations are based on the data from the AOI only Note For a valid Zernike calculation it is require...

Page 59: ...lations to the much faster FPGA reduces the CPU load and further calculations wavefront Zernike fit accelerate The important advantage is a higher measurement speed particularly at large camera resolu...

Page 60: ...entroid determination In Highspeed Mode this level describes the number of digits that will be subtracted from each pixel of the detected camera image prior to the spot determination Please refer to s...

Page 61: ...all spots The grid is flexible with re spect to window size and offset position in both x and y direction This flexibility allows adaption of tilted and spherical wavefronts of a moderate amplitude If...

Page 62: ...e auto exposure feature enabled in High Speed Mode the maximum achievable speed will drop because the camera needs to calculate the actual saturation level for each frame There is an easy way to check...

Page 63: ...amera based Beam Profiler but with the constraint of a lower resolution The lateral resolution is not determined by the camera pixel size as in the case of a real Beam Profiler but rather delete by th...

Page 64: ...ual beam dia meter and position Show Pupil displays a purple circle or ellipse that represents the actual pupil size and position Note Usually there is a difference between the actual size and positio...

Page 65: ...d y axes is parallel to the cross section of the beam The wavefront units can be selected to microns m or waves see Wavefront Sensor Setup Panel The surface is displayed as a color spectrum The assign...

Page 66: ...the Z1 Z2 and Z3 Zernike modes in order to see only the higher or der modes If selecting particular Zernike modes they can be displayed and analyzed separately Difference displays the difference betwe...

Page 67: ...ated gray color palette Contour inserts contour lines into the graph indicating lines of equal wavefront height Hide Z axis hides the z axis and the corresponding grid and caption 2D Projection collap...

Page 68: ...defined values for the displayed range of the Z axis Note The absolute position of the wavefront surface with respect to the Z axis is determined by the wavefront center that is always set to zero Wav...

Page 69: ...wavefront contains particular Zernike modes the coefficient stands for the amplitude The Zernike Bar Graph Configuration panel opens by double clicking to the graph area By default the vertical axis...

Page 70: ...this option can reduce the Y axis scale to a more useful range Show RMS wavefront variations in Zernike orders Enabling this option will change the dis play Instead of the Zernike coefficients the Ze...

Page 71: ...orlabs 5 Operating Instruction 69 5 2 6 Version and other Program Information The menu entry Help About displays application relevant data Visit Thorlabs website www thorlabs com for downloading avail...

Page 72: ...7 20 mm x 5 40 mm for WFS20 11 34 mm x 7 13 mm for WFS30 and 11 26 mm x 11 26 mm for WFS40 can compensate for by using a beam expander Thorlabs GBE02 through GBE20 series used in reverse Alignment Pos...

Page 73: ...er values over a wide dynamic range Note that the sensitivity is strongly wavelength dependent In particular the sensitivity drops drastically at the edges of the wavelength range 400 900 nm for WFS20...

Page 74: ...to the Wavefront Sensor Since the speed of light is the same for all rays within a beam the wavefront at the outer area lags behind the center rays The wavefront is spherical convex and a spherical wa...

Page 75: ...is close to the image size Low Spot Count within pupil may cause reduced Zernike accuracy Even if the number of detected spots within the pupil exceeds the minimum required number increased calculati...

Page 76: ...f the centroid posi tions Check Exposure Time and Gain settings Camera Settings Change the manual set ting or enable automatic control of these camera parameters If this error occurs even with the hig...

Page 77: ...the WFS input from ambient light or increase the optical power of your light source Awaiting hardware trigger This status message indicates that no update of numerical and graphical measurement data...

Page 78: ...the spots were shifted too far and can no longer be detected with the required accuracy Enable the option Adapt centroids prior to entering High Speed Mode to overcome this situ ation 5 6 DataSocket...

Page 79: ...ders and Default Writers Save the changed settings Ctrl S and close the panel The DataSocket server must be restarted in order to update these settings Shut it down using the appropriate menu entry an...

Page 80: ...Waves short 0 m 1 waves Wavefront_Data_EntireArea_Pupil short data relate to 0 entire area 1 pupil Wavefront_Type_Meas_Recon_Diff short 0 measured 1 reconstructed 2 difference Zernike_Orders short num...

Page 81: ...tion in the DataSocket configuration panel the raw spot centroid data arrays from the actual Wavefront Sensor measurement are sent to the DataSocket server Data Item Format Unit example Centroids_X sh...

Page 82: ...nect to the same DataSocket server where the Wavefront Sensor application is sending the data to 2 Click Connect Auto Update for connecting and automatically updating the data items as soon as they ar...

Page 83: ...find a summary of what files you need for particular programming en vironments Programming environment Necessary files C C CVI fp function panel file CVI IDE only h header file lib static library dll...

Page 84: ...on VISA WinNT WFS Manual WFS html NI LabVIEW driver including an example VI The LabVIEW Driver is a 32 bit driver and compatible with 32bit NI LabVIEW versions 8 5 and higher only C Program Files Nati...

Page 85: ...so far applicable VXIpnp Instrument driver C Program Files x86 IVI Foundation VISA WinNT Bin WFS_32 dll C Program Files IVI Foundation VISA Win64 Bin WFS_64 dll Note This instrument driver is require...

Page 86: ...e the WFS driver functions Example for C same for 32 and 64 bit Solution file C Program Files x86 IVI Foundation VISA WinNT WFS Examples CSharp Thorlabs WFS Demo sln Project file C Program Files x86 I...

Page 87: ...d or components that can be repaired by the user Remove dust only using compressed gas free of oil and water for example Thorlabs Duster CA4 US or CA4 EU HFO 1234ze Keep the gas nozzle at least at a d...

Page 88: ...go The LED at the back of the Wavefront Sensor indicates the instrument state LED off USB cable or USB port is defective LED red WFS20 DC power supply is missing WFS30 WFS40 Sensor is not recognized b...

Page 89: ...re website Displayed power values and graphs seem to be frozen Perhaps the measurement has been stopped Check the status window at the bottom of the Wavefront Sensor GUI If there is a message like thi...

Page 90: ...a Wavefront Sensor or when a Wavefront Sensor is upgraded to include an additional MLA Attention Purchasing an additional MLA for an existing Wavefront Sensor requires returning the Wavefront Sensor...

Page 91: ...pixels that show an intensity that is not related to the incident light are called hot pixels Such pixels often appear brighter than ambient light pixels although in rare cases they can appear darker...

Page 92: ...re than 50 digits intensity deviation from ambient pixels appears please return your WFS to Thorlabs for a factory hot pixel compensation Please contact Thorlabs for return instructions In rare cases...

Page 93: ...30 WFS40 Trigger Input WFS20 Reference Plane Zernike Fit and Zernike Modes Drawings Certifications and Compliances Warranty Copyright and Exclusion of Reliability List of Acronyms Literature Certifica...

Page 94: ...hutter Global 1 Exposure Range 4 s 83 3 ms Frame Rate at 1080 x 1080 Resolution 2x Bin ning Normal Mode 2 69 fps 123 fps at 1080 x 1080 Resolution High Speed Mode 2 166 fps 226 fps at 360 x 360 Resolu...

Page 95: ...der Zernike fit at specific camera res olution min exposure time Normal Mode performs image processing on the PC while High Speed Mode uses the internal camera processor 3 Absolute accuracy using inte...

Page 96: ...2007 2018 Thorlabs 94 Wavefront Sensor Selectable camera image sizes for WFS20 Image Sizes WFS20x Normal Mode Image Sizes WFS20x bin2 Mode...

Page 97: ...ned and averaged The result is an increased frame rate with the trade off of reduced spatial wavefront resolution The tables below illus trates this WFS20 5C WFS20 7AR 150 m MLA Lens Pitch Resolution...

Page 98: ...FS20 14AR Frame Rate vs Spot Count Note Above frame rate measurements were executed on a PC with Intel Xeon 2 5 GHz Dual Core CPU Win 7 64 bit under the following measurement conditions 1 Camera setti...

Page 99: ...2007 2018 Thorlabs 8 Appendix 97 Typical Wavelength Response Typical Response of the WFS20 CMOS Camera...

Page 100: ...mm Pixel Size 5 83 m x 5 83 m Shutter Global Exposure Range 33 s 998 ms Frame Rate 1 At 1216 x 1216 Resolution 7 0 mm Pupil Diameter 10 fps 13 fps At 768 x 768 Resolution 4 5 mm Pupil Diameter 21 fps...

Page 101: ...rder Zernike fit at specific camera res olution no subsampling min exposure time 2 Absolute accuracy using internal reference Measured for spherical wavefronts of known RoC 3 Typical relative accuracy...

Page 102: ...lows to increase the measurement speed by subsampling only each second pixel in rows and columns is used in other words from an area of 2 x 2 4 pixels only a single pixel is analyzed The downside of t...

Page 103: ...5 1216 x 1216 7 13 x 7 13 45 x 45 2025 21 x 21 441 1024 x 1024 6 00 x 6 00 39 x 39 1521 19 x 19 361 768 x 768 4 50 x 4 50 29 x 29 841 13 x 13 169 512 x 512 3 00 x 3 00 19 x 19 361 9 x 9 81 360 x 360 2...

Page 104: ...l Size 5 5 m x 5 5 m Shutter Global Exposure Range 77 s 499 ms Frame Rate 1 At 2048 x 2048 Resolution 11 0 mm Pupil Diameter 4 0 fps 5 5 fps At 1024 x 1024 Resolution 5 5 mm Pupil Diameter 17 fps 19 f...

Page 105: ...display depending on PC hardware 4th order Zernike fit at specific camera res olution no subsampling min exposure time 2 Absolute accuracy using internal reference Measured for spherical wavefronts o...

Page 106: ...2007 2018 Thorlabs 104 Wavefront Sensor Selectable camera image sizes for WFS40 Normal Mode...

Page 107: ...2007 2018 Thorlabs 8 Appendix 105 Selectable camera image sizes for WFS40 sub2 Mode...

Page 108: ...225 1536 x 1536 8 45 x 8 45 55 x 55 3025 27 x 27 729 1024 x 1024 5 63 x 5 63 35 x 35 1225 17 x 17 289 768 x 768 4 22 x 4 22 27 x 27 729 13 x 13 169 512 x 512 2 82 x 2 82 17 x 17 289 7 x 7 49 360 x 360...

Page 109: ...rrays MLA150 5C MLA150 7AR and MLA300 14AR respectively The MLA150 5C has a chrome mask grid that blocks light from being transmitted unless it passes through a microlens which increases the image con...

Page 110: ...c Lens Diameter 146 m 295 m2 Coating Chrome Mask Anti Reflection Reflectivity 25 1 Nominal Focal Length 5 6 mm 14 2 mm Effective Focal Length When mounted to WFS 4 1 mm 5 2 mm 14 6 mm Array Size WFS20...

Page 111: ...her order wavefront terms up to a certain Zernike order requires a minimum number of detected microlens spots The minimum number of spots must equal or exceed the number of Zernike modes to be calcula...

Page 112: ...settings warnings or errors may occur See chapter Measurement Warnings and Errors for a detailed description and suited arrangements for its prevention 8 3 Trigger Input WFS20 The external trigger inp...

Page 113: ...g ger functionality To use the trigger connect your trigger source to the WFS instrument using the trigger cable CAB DCU T3 available separately This cable is designed for the camera on which the WFS3...

Page 114: ...Color Hirose HR25 7TR 8PA 73 male socket camera rear view 1 GND grey 2 Flash OUT green 3 GPIO 1 blue 4 Trigger IN brown 5 Flash OUT yellow 6 GPIO 2 red 7 Trigger IN white 8 VCC OUT pink This cable can...

Page 115: ...easily normalized to form an orthonormal basis Zernike modes are conveniently expressed in either polar or rectangular coordinate reference frames Rectangular coordinates are x any y both normalized t...

Page 116: ...3 3 3 cos 3 11 4 4 4 sin 4 12 4 2 4 4 sin 2 3 2 sin 2 13 4 0 6 4 6 2 1 14 4 2 4 4 cos 2 3 2 cos 2 15 4 4 4 cos 4 Mode Order Frequency Name Norm Zernike Polynomial Cartesian 1 0 0 Piston 1 1 2 1 1 Tip...

Page 117: ...iable is the normalized pupil dimension with origin at the center i e x dis tance from the origin in x direction pupil radius Zernikes and Optical Abberations The next table illustrates the wavefront...

Page 118: ...ple Defocus Q1 What peak to valley PV deformation corresponds to a Defocus term of Z5 1 m A1 As the pure mathematical defocus formula 2r2 1 describes a concave wavefront the wavefront shape WF r in po...

Page 119: ...117 Related to the spherical wavefront this formula is adapted to Since the second term PV 2 is much smaller than the RoC to be calculated this term can be omitted The remaining formula gives an RoC o...

Page 120: ...ws the data flow within the Wavefront Sensor software and the user defined inputs and data outputs The brightness of the camera image is loop controlled to ensure an optimal saturation level The beam...

Page 121: ...by using well known Zernike functions Output data are Zernike coefficients that are displayed numerically as well as in a bar graph panel The wavefront reconstruction is performed using all or a user...

Page 122: ...of the microlenses on the back face of the microlens array its location is different for each Wavefront Sensor model and depends on parameters specific the particular sensor head and installed MLA Mod...

Page 123: ...2007 2018 Thorlabs 8 Appendix 121 8 9 2 Drawing WFS20 5C...

Page 124: ...2007 2018 Thorlabs 122 Wavefront Sensor 8 9 3 Drawing WFS20 5C M...

Page 125: ...2007 2018 Thorlabs 8 Appendix 123 8 9 4 Drawing WFS20 7AR...

Page 126: ...2007 2018 Thorlabs 124 Wavefront Sensor 8 9 5 Drawing WFS20 7AR M...

Page 127: ...2007 2018 Thorlabs 8 Appendix 125 8 9 6 Drawing WFS20 14AR...

Page 128: ...2007 2018 Thorlabs 126 Wavefront Sensor 8 9 7 Drawing WFS20 14AR M...

Page 129: ...2007 2018 Thorlabs 8 Appendix 127 8 9 8 Drawing WFS20 Control Box...

Page 130: ...2007 2018 Thorlabs 128 Wavefront Sensor 8 9 9 Drawing WFS30 5C...

Page 131: ...2007 2018 Thorlabs 8 Appendix 129 8 9 10 Drawing WFS30 5C M...

Page 132: ...2007 2018 Thorlabs 130 Wavefront Sensor 8 9 11 Drawing WFS30 7AR...

Page 133: ...2007 2018 Thorlabs 8 Appendix 131 8 9 12 Drawing WFS30 7AR M...

Page 134: ...2007 2018 Thorlabs 132 Wavefront Sensor 8 9 13 Drawing WFS30 14AR...

Page 135: ...2007 2018 Thorlabs 8 Appendix 133 8 9 14 Drawing WFS30 14AR M...

Page 136: ...2007 2018 Thorlabs 134 Wavefront Sensor 8 9 15 Drawing WFS40 5C...

Page 137: ...2007 2018 Thorlabs 8 Appendix 135 8 9 16 Drawing WFS40 5C M...

Page 138: ...2007 2018 Thorlabs 136 Wavefront Sensor 8 9 17 Drawing WFS40 7AR...

Page 139: ...2007 2018 Thorlabs 8 Appendix 137 8 9 18 Drawing WFS40 7AR M...

Page 140: ...2007 2018 Thorlabs 138 Wavefront Sensor 8 9 19 Drawing WFS40 14AR...

Page 141: ...2007 2018 Thorlabs 8 Appendix 139 8 9 20 Drawing WFS40 14AR M...

Page 142: ...ge the line voltage set ting To avoid risk of fire only the appropriate fuses for the corresponding line voltage must be used All modules must only be operated with duly shielded connection cables Use...

Page 143: ...ose specified by Thorlabs The correction of interference caused by such unauthorized modification substitution or attachment will be the responsibility of the user The use of shielded I O cables is re...

Page 144: ...2007 2018 Thorlabs 142 Wavefront Sensor 8 11 Certifications and Compliances...

Page 145: ...2007 2018 Thorlabs 8 Appendix 143...

Page 146: ...ard and or software determined by Thorlabs for this unit to operate fault free provided that they are handled according to our requirements However Thorlabs does not warrant a fault free and uninterru...

Page 147: ...urchase of this product In no event shall any liability exceed the purchase price of the product Please note that the content of this document is neither part of any previous or existing agree ment pr...

Page 148: ...D Neutral Density NI National Instruments OEM Original Equipment Manufacturer PC Personal Computer PCB Printed Circuit Board PoCL Power over Camera Link PV Peak to Valley RMS Root Mean Square RoC Radi...

Page 149: ...110 Brazil Tel 55 16 3413 7062 Fax 55 16 3413 7064 www thorlabs com Email brasil thorlabs com Japan Thorlabs Japan Inc 3 6 3 Kitamachi Nerima ku Tokyo 179 0081 Japan Tel 81 3 6915 7701 Fax 81 3 6915...

Page 150: ...n 76 DataSocket server 76 DataSocket Server Configuration 63 Default 3D View 24 Default Setup Parameters 63 Default Top View 63 Difference 40 Disable Exra Calculation 40 Disable Graphics 48 Display 40...

Page 151: ...metric constants P 38 Peak to Valley 88 Pickup Tool 46 72 plane wavefront 113 Polar coordinates 113 polar or rectangular coordinate 29 Pupil Center 29 Pupil Definition 29 Pupil Definitions 29 Pupil Di...

Page 152: ...Wavefront Graph Configuration 63 Wavefront Panel 38 wavefront reconstruction 35 Wavefront Reference 25 wavefront resolution 24 Wavefront Sensor Setup 24 Wavefront Sensor Setup Panel 35 Wavefront Unit...

Page 153: ...www thorlabs com...

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