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THORLABS DMH40-F01, Руководство по эксплуатации

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© 2021 Thorlabs

49

DMH40

7.2   Analog Feedback Connector

A analog feedback connector will help to establish a closed loop control using a photo detector
as described in the chapter 

Closed Loop Control

. The analog feedback connector is not en-

closed in the shipment but may be purchased at any supplier. 

Connection of the external feedback connector

(Stereo connector plug, Ø 2.5 mm)

33

Содержание DMH40-F01

Страница 1: ...Piezoelectric Deformable Mirror 2021 DMH40 M F01 DMH40 M P01 Operation Manual...

Страница 2: ...Version Date 1 1 15 Apr 2021 Copyright 2021 Thorlabs...

Страница 3: ...n 14 14 4 1 Operating Elements 14 4 2 Installing Software 15 4 3 Mounting 15 4 4 First Steps 16 4 5 Out of the Box Test 17 4 6 Software Deformable Mirror 17 4 6 1 GUI Header 18 4 6 2 Menu Bar 21 4 6 3...

Страница 4: ...on 43 6 2 Troubleshooting 7 Appendix 46 46 7 1 Technical Data 49 7 2 Analog Feedback Connector 50 7 3 About Zernikes 51 7 4 Dimensions DMH40 xxx Imperial 52 7 5 Dimensions DMH40 M xxx Metric 52 7 6 Sa...

Страница 5: ...king 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 associated information carefully bef...

Страница 6: ...coatings UV Enhanced Aluminum for 250 nm to 450 nm wavelength or Protected Silver for 450 nm to 20 mm wavelength Compared to the Thorlabs deformable mirror DMP40 the DMH40 has a more than 2 fold large...

Страница 7: ...of the DMH40 Microsoft Net Framework version 4 6 2 or higher must also be installed This software comes with the Thorlabs Deformable Mirror software installation pack age available for download on the...

Страница 8: ...mic disk with segmented electrodes glued to the back side The mirror is mounted via 3 mounting joints shown above 2 1 Mirror Cross section of the DMH40 inner mirror The above sketch shows a simplified...

Страница 9: ...and leads to a local convex shape Applying a voltage to a piezo segment Applying the same voltage higher or lower than 150 V to all 40 electrodes results in a pure spherical mirror shape An arbitrary...

Страница 10: ...te The instrument driver software accepts zero based segment indices in the range 0 39 while the user interface in the software refers to the numbering as shown in the above diagram The segments 25 to...

Страница 11: ...grammed not included in the GUI or driver to optimize the wave front without a wavefront sensor This feedback method works for 2 cases a Flat Wavefront If the beam focus is located exactly in the plan...

Страница 12: ...Mirror software uses the wavefront sensor measurement data provided via the WFS DataSocket interface included with the Thorlabs Wavefront Sensor soft ware In the section Closed Loop Control of this m...

Страница 13: ...racks For this particular sample the hysteresis is 3 5 m or 14 related to the total stroke range of 24 5 m The max hysteresis of the used material for the DMH40 is 25 For this reason a control voltage...

Страница 14: ...he last voltage step The resulting stroke change is logarithmically dependent on time which means that the creep speed decreases over the time but never actually ceases After power on all DMH40 contro...

Страница 15: ...he end the mean voltage of 150 V This way the time required to come to a stable and nearly flat mirror shape is shortened drastically Drift effects occur whenever the mirror s control voltage is chang...

Страница 16: ...oop control system In other words piezoelectric de formable mirrors cannot be used to exactly set a deterministic wavefront distortion Shift of Hysteresis Curve Finally the creep overlays the hysteres...

Страница 17: ...described above are more significant the larger the change in the applied voltage The Thorlabs Deformable Mirror software provides a Relax feature to eliminate or at least to minimize the above impac...

Страница 18: ...ntil you have inspected the contents and you have inspected the DMH40 mechanically and electrically Keep the container for stor age or in order to return the product in case of future problems Verify...

Страница 19: ...unt Control settings warnings may ap pear several times during the installation process asking to allow software installation Please confirm that when appropriate in order to proceed with a proper sof...

Страница 20: ...er four 4 40 inner threads with 5 mm depth on the front of the device 4 4 First Steps After installing the Thorlabs Deformable Mirror software and mounting the DMH40 to the optical setup proceed with...

Страница 21: ...he Deform able Mirror of choice Note Pressing the keyboard button F1 calls up online help to the Thorlabs Deformable Mirror soft ware 4 5 Out of the Box Test It is simple to test the DMH40 out of the...

Страница 22: ...5 Control Panel 6 Color Bar Mirror voltages 7 Status Bar 8 Mirror Temperature Display 4 6 1 GUI Header The header of the graphical user interface indicates the recognized product and its serial num be...

Страница 23: ...ion driver version and the recognized instrument Application settings Size and position of the GUI Active Control Panel Color style ID overlay status Zernike pattern orientation Control Loop settings...

Страница 24: ...hape generated by the DMH40 will not exactly reproduce the original surface shape from the previous application of these parameters Note Data reconstruction will be correct only if the settings for Fl...

Страница 25: ...pensation is enabled However if it is desirable to analyze hys teresis effects on the mirror shape the hysteresis compensation can be disabled by uncheck ing the appropriate box The CONTROL LOOP Setti...

Страница 26: ...on the segments resulting from manual direct mirror manipulation will remain Restore Sets all Zernike coefficients to zero and all segment voltages to 150 V Relax the mirror DataSocket Server Connecti...

Страница 27: ...H40 and the WFS All this can be com pensated manually in this menu The pattern can be flipped horizontally vertically or by a rota tion angle of 0 45 90 or 135 Besides the manual correction the Thorla...

Страница 28: ...voltages applied to the segments The color of the mirror segments represents the applied voltage according to the color scheme displayed in the color bar to the right The color scheme can be changed...

Страница 29: ...ment color Alternatively you can input the desired voltage numerically Finally using the mouse scroll wheel or cursor buttons the segment voltage can be changed with the following increments Increment...

Страница 30: ...ntrol Loop Settings this pannel is only active when a Control Loop is used Click to the desired panel header to expand it 4 6 6 1 Zernike Control The Zernike manipulation panel allows a predefined vol...

Страница 31: ...range cannot be calibrated in abso lute values Control sliders and numerical inputs allow each Zernike to be set within a relative range between 1 and 1 In the closed loop control mode the sliders sh...

Страница 32: ...multaneously Ring Selection No Ring Segments 1 inner 1 to 8 2 middle 9 to 24 3 outer 25 to 40 Eighths Selection No Segments 4 1 9 10 25 26 5 2 11 12 27 28 6 3 13 14 29 30 7 4 15 16 31 32 8 5 17 18 33...

Страница 33: ...ser can select Zernikes to maintain at 0 Selected Zernikes are indicated by a check mark If no Zernikes are selected a warning icon will be displayed in the header bar and the menu topic CONTROL LOOP...

Страница 34: ...r Bar The color bar represents the voltage that is applied to a segment in a certain color There are several color tables available that can be selected in the Settings menu Jet default Summer Autumn...

Страница 35: ...loop control instrument status current date and time If an error was detected the message appears and a separate window pops up that describes the detected error in detail e g By checking the button D...

Страница 36: ...00 sec 60 sec Temperature Unit C F K C Time Format Time Stamp date and time Elapsed time hh mm ss Time Stamp Zoom Mode Drag Zoom Panning Panning only Drag and Zoom Save Save as csv Save as image JPG P...

Страница 37: ...when terminating the program and are restored with the next software session 4 6 10 The Configuration File The configuration file comprises of three main parts General information Information about so...

Страница 38: ...tool bar When closing the application all settings and data will be saved automatically These most re cent settings are being loaded when starting the application again so that the last configuration...

Страница 39: ...bit and 64 bit applications In 32 bit systems only the 32 bit components are installed to C Program Files In 64 bit systems the 64 bit components are being installed to C Program Files while 32 bit co...

Страница 40: ...The DMH40 does not have tilt arms Set Get voltages to all arms and segments Only 3 of the Service Functions are accessible by default Hidden functions are not relevant for the user because they are d...

Страница 41: ...rn is then passed to an appropriate basic driver function in order to set this calcu lated voltage pattern to the DMH40 An overview is given below Comments Utility functions Used for common tasks Acti...

Страница 42: ...I Foundation VISA WinNT lib msc TLDFM_32 lib C Program Files IVI Foundation VISA WinNT lib msc TLDFMX_32 lib Function Panel C Program Files IVI Foundation VISA WinNT TLDFM TLDFM fp C Program Files IVI...

Страница 43: ...x86 IVI Foundation VISA WinNT include TLDFMX h C Program Files x86 IVI Foundation VISA WinNT include TLDFMX_def h Static Library C Program Files x86 IVI Foundation VISA WinNT lib msc TLDFM_32 lib C Pr...

Страница 44: ...le C Program Files x86 IVI Foundation VISA WinNT TLDFM Examples DotNet Sample csproj C Program Files x86 IVI Foundation VISA WinNT TLDFMX Examples DotNet Thorlabs TLDFMX_32 Interop Sample csproj Examp...

Страница 45: ...x86 IVI Foundation VISA WinNT include TLDFM h C Program Files x86 IVI Foundation VISA WinNT include TLDFM_def h C Program Files x86 IVI Foundation VISA WinNT include TLDFMX h C Program Files x86 IVI F...

Страница 46: ...pped applic ators or any other mechanical tools Using these chemical and or mechanical tools voids war ranty Remove dust using only oil and water free compressed gas such as Thorlabs Duster CA4 US or...

Страница 47: ...and Service 42 Context sensitive help means that the online help opens at the point that describes the selected functionality Example A Zernike slider was moved Pressing F1 brings up the section Zern...

Страница 48: ...connect button Alternatively you can select Simulate the Thorlabs Deformable Mirror software will open in simulation mode the header will appear accordingly When starting the Thorlabs Deformable Mirro...

Страница 49: ...tarting the Thorlabs Deformable Mirror software a DataSocket Error message appears No installation of the WFS software could be found on the computer If you do not need the Closed Loop Control feature...

Страница 50: ...on by resetting the application settings Loading old dmfd configuration files With updating the Thorlabs Deformable Mirror software from older versions the file structure of the configuration files ma...

Страница 51: ...nm 2 m Damage Threshold Pulsed Signals 0 2 J cm 355 nm 10 ns 10 Hz 0 38 mm 1 J cm 1064 nm 10 ns 10 Hz 10 mm Hysteresis of Piezoceramic Material 3 20 Typical 25 Max Physical Stroke 2 Z5 Defocus 17 6 m...

Страница 52: ...V DC 18 VA desktop power supply energy level VI Warm up time not required Operating Altitude max 3000 m Dimensions W x H x D 64 x 60 x 31 mm w o dust cover Mounting Options Thorlabs 30 mm cage system...

Страница 53: ...21 Thorlabs 7 Appendix 48 Reflectance of the UV Enhanced Aluminum Coating Compare https www thorlabs com newgrouppage9 cfm objectgroup_id 264 Note The DMH40 F01 provides an average reflectance of 89 o...

Страница 54: ...elp to establish a closed loop control using a photo detector as described in the chapter Closed Loop Control The analog feedback connector is not en closed in the shipment but may be purchased at any...

Страница 55: ...below illustrates the impact of Zernikes to the wavefront Here the Zernike index assignment is identical with the assignment used in Thorlabs Deformable Mirror software and WFS software CC BY SA 3 0...

Страница 56: ...2021 Thorlabs 51 DMH40 7 4 Dimensions DMH40 xxx Imperial...

Страница 57: ...ve earth ground con tact of the socket outlet Improper grounding can cause electric shock with damages to your health or even death The DMH40 must not be operated in explosion endangered environments...

Страница 58: ...C 61326 1 for using connection cables shorter than 3 meters 9 8 feet Warning The piezoelectric actuators are operated by a high DC voltage Immediately disconnect the power supply if the mirror surface...

Страница 59: ...2021 Thorlabs 7 Appendix 54 7 8 Certifications and Compliances...

Страница 60: ...the technical data of the de scribed unit at any time 7 10 Copyright and Exclusion of Liability Thorlabs has taken every possible care in preparing this document We however assume no li ability for th...

Страница 61: ...2021 Thorlabs 7 Appendix 56 7 11 References 1 ANSI Z80 28 2010 Ophthalmics Methods of Reporting Optical Aberrations of Eyes ANSI eStandards...

Страница 62: ...GmbH M nchner Weg 1 D 85232 Bergkirchen Germany Tel 49 8131 5956 0 Fax 49 8131 5956 99 www thorlabs de Email europe thorlabs com EU Importer Address Thorlabs GmbH M nchner Weg 1 D 85232 Bergkirchen Ge...

Страница 63: ...thorlabs com Thorlabs End of Life Policy WEEE Thorlabs verifies our compliance with the WEEE Waste Electrical and Electronic Equip ment directive of the European Community and the corresponding natio...

Страница 64: ...51 52 Dimensions 23 Display Mirror Control 31 Display Mirror Temperature 23 Display Segment Control 37 38 40 dll 9 12 Drift E 27 Eighths selection 43 Error DataSocket 43 Error Disable control loop 43...

Страница 65: ...ements 21 Reset application 32 Reset application settings 18 21 24 Restore 27 Ring selection S 52 Safety 18 Save user configuration 24 27 Segment control 18 21 23 24 27 Segment selection 5 Segment str...

Страница 66: ...www thorlabs com...

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