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Version 4.2 rev 06 Oct 2020

8.2 x 8.2 mm / 512 x 512 sensor 
Lowest Noise Imaging EMCCD

Mechelle

Figure 11: Camera Flange (right side view)

4.  Couple a spectral lamp to the spectrograph (e.g. Mercury-Argon).

5.  Rotate and focus the camera to achieve the smallest spots possible (3 pixels FWHM in CCD and 5 pixels 

FWHM in ICCD in x-direction).

6.  Also ensure that the 253 nm line from Hg source falls near the following pixels (X = 500, Y = 300) with ±10 

pixels margin.

7.  Tighten the grub screws (x3) and the cap head screw (x1).

8.  To check the alignment, use a CW source (e.g.Tungsten or desktop lamp) and re-calibrate. The pattern on the 

image as shown on this example should be as near to horizontal as possible.

9.  To focus the camera, move it forward/backwards in increments. The spot on the image as shown below should 

be as small as possible (This image is also used to align the slit).

Camera  Alignment 
Grub Screw

Camera  Alignment 
Grub Screw

Содержание Mechelle

Страница 1: ...8 2 x 8 2 mm 512 x 512 sensor Lowest Noise Imaging EMCCD Mechelle User Guide andor com Andor Technology Ltd 2020 Version 4 2 revised 06 Oct 2020...

Страница 2: ...E SLIT 22 2 3 1 Optional ST FC fibre adapters 22 2 3 2 Shutter 23 2 4 OPTIONAL CC52 COLLECTOR COLLIMATOR WITH ALIGNMENT LASER 24 SECTION 3 INSTALLING THE MECHELLE SPECTROGRAPH 25 3 1 UNPACKING HANDLIN...

Страница 3: ...IENCY CORRECTION 53 4 11 1 Effect of Ambient Temperature on the Relative Efficiency Correction 54 4 11 2 Relative Efficiency Correction with Sub Spectrum 54 SECTION 5 TROUBLESHOOTING 55 SECTION 6 MAIN...

Страница 4: ...4 Version 4 2 rev 06 Oct 2020 8 2 x 8 2 mm 512 x 512 sensor Lowest Noise Imaging EMCCD Mechelle APPENDIX A MECHANICAL DRAWINGS 60 APPENDIX B REFERENCE INFORMATION 61 APPENDIX C OTHER INFORMATION 65...

Страница 5: ...0 Updated laser safety information 4 2 06 Oct 2020 Updated laser safety information Future Versions of the Manual Changes are periodically made to the product and these will be incorporated into new e...

Страница 6: ...ing and operating instructions located either on the product or in this guide 7 The Mechelle a is a precision scientific instrument containing fragile components Always handle with care 8 This product...

Страница 7: ...manual handling risks such as Lifting a load that is too heavy Poor posture or technique during lifting Dropping a load Lifting objects with sharp edges Shipping and Storage Conditions Unpacking and I...

Страница 8: ...ble laser light is dangerous as well as invisible that this laser product is not fully safe as you usually have access to hazardous laser radiation Laser safety for this type of product is about reduc...

Страница 9: ...displayed in the area the system operates 10 If the system is not in use turn the laser off using the key switch where applicable 11 Do not attempt to disassemble the unit housing the lasers or any pa...

Страница 10: ...exposures but can be hazardous for deliberate staring into the beam The time base of 0 25 s is inherent in the definition of the class and presumption is that there is very low risk of injury for mome...

Страница 11: ...verything above Class 3B See IEC 60825 1 Table F 2 See IEC 60825 1 Annex C CDRH Class IIIa is almost identical to Class 3R and 21CFR 1040 10 b 8 describes the hazard as depending upon the irradiance e...

Страница 12: ...Laser Safety Officer Andor recommends the following products 360 nm to 510 nm Kentek KXP 4001 Spectacles 510 nm to 670 nm Kentek KRA 6702 Spectacles Working with Optical Fibres 1 Only service personn...

Страница 13: ...d Warning This is a Class 2 product that will harm your eyes if you stare into it See section on Laser Class Practical Differences above Do not stare into the beam Radiation Output The maximum output...

Страница 14: ...ect eye exposure to the laser beam Radiation Output The maximum output defined by IEC 60825 1 3 58 and 7 9 is the maximum accessible emission that is used to determine the class of the laser product N...

Страница 15: ...n be emitted from the output so it is labelled as a Laser Aperture Although the output would be classified as Class 2 because it is typically 0 15 mW under IEC 60825 1 Condition 3 this is superfluous...

Страница 16: ...air The spectrograph has a rugged compact design with no moving parts enabling the Mechelle spectrograph to withstand more physical handling than other high performance spectrographs This makes the Me...

Страница 17: ...reland Tel 44 0 28 9023 7126 Fax 44 0 28 9031 0792 Andor Technology 300 Baker Avenue Suite 150 Concord MA 01742 USA Tel 1 860 290 9211 Fax 1 860 290 9566 Asia Pacific China Andor Technology Japan 5F I...

Страница 18: ...SE OF THE INFORMATION PROVIDED HEREIN 1 3 Copyright and Protective Notices The copyright in this document and the associated drawings are the property of Andor Technology Ltd and all rights are reserv...

Страница 19: ...mera model Slit type and model and optional shutter are ordered separately 1 5 1 Optional Components Optional and replacement parts are listed below Description Order Code Mercury Argon calibration la...

Страница 20: ...ring during readout or for ICCD cameras to take background or protect the photocathode between experiments Shutter Cable Connection For connection of the temperature sensor and optional shutter to the...

Страница 21: ...spersive element prism is collimated Echelle Grating This type of grating provides good efficiency performance over a large number of orders and wavelength range Its groove density also dictates the s...

Страница 22: ...a Slit Disc must be used Figure 3 right Figure 3 Left SMA connector and brass insertion tool Right Slit disc and brass insertion tool The most common slit size used is a rectangular 25 m x 50 m W x H...

Страница 23: ...The shutter if fitted is located behind the slit in the shutter housing The shutter housing contains an electronic shutter driver which connects through the Shutter Temperature cable To improve the op...

Страница 24: ...ngth Range 200 950 nm Fibre Optics Connector Standard SMA Items Included 3V adapter An alignment laser is also provided with the CC52 When coupled to the collector collimator the user can optimize the...

Страница 25: ...d Camera Alignment Procedure NOTE If you have purchased an Andor camera such as the iStar with your Mechelle spectrograph it is normally attached and pre aligned at the factory Figure 9 Mechelle with...

Страница 26: ...53 nm line from Hg source falls near the following pixels X 500 Y 300 with 10 pixels margin 7 Tighten the grub screws x3 and the cap head screw x1 8 To check the alignment use a CW source e g Tungsten...

Страница 27: ...ed for Mechelle calibration Example wavelengths shown below please refer to information suplied with your reference lightsource Hg Wavelengths nm Ar Wavelengths nm 253 652 696 543 296 728 706 722 302...

Страница 28: ...d a USB port of the control PC The iStar CCD is connected via USB 2 0 and the iStar sCMOS via USB 3 0 Figure 12 iStar CCD USB 2 0 left iStar sCMOS USB 3 0 right 2 Connect the I2 C shutter temperature...

Страница 29: ...s time only option then click Next 2 Select the Install from a list or specified location Advanced option then click Next 3 Navigate to the directory where the Andor Solis software was installed to on...

Страница 30: ...d when the software was installed 4 2 Setting up the Mechelle in the Software From the Main Window select Hardware Spectrograph Setup e g The Setup Spectrograph dialog box appears Select Andor from th...

Страница 31: ...dialog box appears In the XML Setup File field of the Mechelle Setup dialog box click on the button then locate and select the appropriate xml file for the Mechelle model being used Click the Open bu...

Страница 32: ...draw order lines on image button will also be shown on the right side of the main window toolbar This button also toggles this option ON and OFF The Calibration Temp window indicates the Prism tempera...

Страница 33: ...sensor Lowest Noise Imaging EMCCD Mechelle Close all dialogue boxes then save NOTE The configuration file must be named either istar cfg or AndorSolis cfg After the Save button is pressed choose to ov...

Страница 34: ...or acquisition parameters in Setup CCD for iStar CCD or iKon platforms or on the real time control interface for iStar sCMOS For details on how to setup the different acquisition parameters of detecto...

Страница 35: ...e time intensifier gate width and delay camera trigger mode and kinetic series single acquisition mode The acquired data will appear in Data Windows 0 and 1 as shown in the example below 0 will show t...

Страница 36: ...ligned The shutter housing is removed To do this you should switch on a reference source the procedure below uses a Mercury Argon lamp with a wide spread of spectral features from UV to NIR and acquir...

Страница 37: ...n the echellogramme image Based on the previous or default calibration the program will look for each calibration line within the defined search area If too low a number is selected the calibration pr...

Страница 38: ...rtical Y directions are plotted in a diagram The size of the plotted area equals the size of the search window If one line calibration file is used the residuals in X and Y direction equal zero The op...

Страница 39: ...bration lines are properly detected and located on the echellogramme Figure 17 Accumulate Settings 4 5 1 Calibration Files There are a number of calibration files in the list Each file contains the ca...

Страница 40: ...entered in two spectral orders namely order 75 and 76 In such a case the line should be entered as two separate entries in the calibration file 4 5 2 Displaying Results After the system has been calib...

Страница 41: ...e 18 below The user can then select the atomic species of interest alongside their ionisation levels to identify the relevant element from this screen Figure 19 The Periodic Table Menu The results of...

Страница 42: ...of fibre diameter Cross talk also increases with slit height or fibre diameter There is no standard definition of cross talk and all Echelle based spectrograph manufactures except Andor do not specify...

Страница 43: ...and width of the slide bar in relation to the wavelength scale shown The start centre and end wavelengths can be changed in one of two ways 1 By dragging the slider with the mouse This is done by posi...

Страница 44: ...the image window 0 see figure 21 below Only the sub image is then read out and a sub spectrum is extracted from it NOTE In Full Spectrum mode the software automatically calculates the background subt...

Страница 45: ...the efficiency drops to about half of this value at the extremities of each order An Echelle grating is blazed for all wavelengths in a spectral range for a given diffraction order Figure 22 An Illus...

Страница 46: ...st cover the same wavelength range or more Unfortunately these is no lamp can cover 200 nm 975 nm therefore two lamps are required to carry out this procedure Typically a deuterium lamp is used from 2...

Страница 47: ...ear Select usable wavelength range this is a combination of spectrograph range and Detector spectral range e g if an Detector iStar 18F 03 is used spectral range 180 850 nm with an ME5000 wavelength r...

Страница 48: ...terium Click Take Reference 1 Switch off source 1 switch on source 2 and wait for it to stabilise Click Take Reference 2 Your calibration is now complete It is recommended to save the configuration fi...

Страница 49: ...er completing the previous steps the relative efficiency correction is now complete and the system ready for use NOTE Window 1 above contains the following five tabs 1 Source the manufacturers data fo...

Страница 50: ...west Noise Imaging EMCCD Mechelle 3 Cf the correction factor calculated for source data and Ref data 4 Live the row data of a new signal An example for a QTH lamp is shown below 5 Sig the new data aft...

Страница 51: ...of the relative efficiency correction The following figure shows the row data live from a mercury lamp if shows that the intensity of the 546 nm line has double the intensity of the 253 7 nm line The...

Страница 52: ...applying the relative efficiency correction It is clear that there are very large noise levels at the lower wavelengths 200 350 nm This is caused by a lack of signal from the light source This part o...

Страница 53: ...velength range to be between 350 800 nm NOTE Do not take a new Background or Reference at this point Click Ok and the Save Configuration dialog box will appear Click Yes and the Save As dialog box wil...

Страница 54: ...the wavelength calibration will remain accurate 4 11 2 Relative Efficiency Correction with Sub Spectrum To carry out the relative efficiency correction with sub spectrum the following procedure must...

Страница 55: ...adjusted before delivery and the design features few adjustable or moving parts Therefore it requires minimal interaction once setup in the software and in use Refer to the troubleshooting sections o...

Страница 56: ...elle is not being used it is recommended to protect the fibre optic input connection with the protection cap included in the delivery Never use aggressive cleaning substances e g benzene spirit nitro...

Страница 57: ...g Aperture Slit or Fibre Adapters When larger fibre 50 m diameter must be used a combination of slit and fibre can be used The slit will determine the resolution of the spectrograph and the large fibr...

Страница 58: ...Horizontal Magnification 0 81 Vertical Magnification 1 66 Stray light 1 5x10 4 measured at 20 nm from 633 nm laser line Optical Axis 165 1 mm 6 50 inches with feet 155 1 mm 6 1 inches without feet Sh...

Страница 59: ...al spot and then diverges again See comments in Laser Safety and Product Compliance Labels about Radiation Output definition in IEC 60825 1 7 5 ME OPT 0009 Laser Alignment Module Specifications Wavele...

Страница 60: ...ENDIX A MECHANICAL DRAWINGS Dimensions mm inches 110 7 4 36 160 0 6 30 233 5 9 19 598 0 23 54 324 7 12 78 12 8 0 50 52 4 2 06 165 1 6 50 209 1 8 23 110 7 4 36 60 0 6 30 248 9 9 80 30 6 1 20 1 3 6 9 5...

Страница 61: ...tems This can take several forms such as cut off filters detectors insensitive to longer wavelengths or cross dispersion in the form of prisms or low dispersion gratings The latter approach leads to a...

Страница 62: ...ion will be in the region of 5 x 103 Figure 29 Schematic representation of echelle grating order sorter combination B1 2 Echelle Layout The layout of the echelle is shown in figure 30 below The patent...

Страница 63: ...gle order m can be defined by the following equation Where o m is the centre wavelength of any order as shown in figure 33 below This enables the resolution R equation below of the spectrograph to be...

Страница 64: ...ensor Lowest Noise Imaging EMCCD Mechelle Figure 33 Detailing four spectral orders indicating distance between orders LT and centre wavelengths B2 Sample Images Figure 34 Image of Mercury Argon lamp o...

Страница 65: ...on The terms and conditions of sale including warranty conditions will have been made available during the ordering process The current version may be viewed at http www andor com pdfs literature Ando...

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