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The contents of this manual are subject to change without notice and do not constitute a commitment on the part of J.A. Woollam Co. Every effort has been made to ensure the accuracy of this document. However, due to ongoing product improvements and revisions, J.A.
2 Hardware Description 2.1 System Configurations This manual covers the full line of M-2000 based spectroscopic ellipsometers mounted on the auto-angle ESM-300 base. MODEL SPECTRAL RANGE LAMP(S) M-2000D(I) 193-1000 (1690) nm 30W Deuterium and 20W QTH M-2000X(I) 210 (245)-1000 (1690) nm 75W Xenon arc...
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200 Light Source houses the D2 (Deuterium) and QTH (Quartz Tungsten Halogen) lamps. Power for the lamps is supplied through highly regulated switching DC power supplies located in the M-2000 XLS light source. The Source Unit also contains the beam collimation optics, a fixed polarizer, and a compensator located in a continuously rotating stepper motor.
Warning: The QTH lamp gets extremely hot during operation. Always allow it to cool adequately before replacing the lamp. Receiver Units The following receiver units are used for M-2000 ellipsometers. There is also an optional Internal Alignment Camera used for fast sample alignment. MQD-Single Receiver Unit Figure 2-10.
Figure 2-12. Optical fiber. Fiber Optic Cables are used to couple the beam from the Receiver Unit to the Detector(s) located in the M-2000 Detector and Lamp Power Supply Module. The fibers have a 200 micron core diameter (standard), and are terminated on each end with an SMA connector for easy insertion and removal.
Detector/Lamp Power Control Module Figure 2-13. M-2000 Detector and Lamp Power Supply Module. The M-2000 Detector and Lamp Power Supply Module contains a UV-VIS Spectrometer covering a wavelength range of 193-1000 nm and an optional NIR Spectrometer that covers a wavelength range of 1000-1690 nm. It also contains highly regulated DC switching power supply for the Light Source.
Auto-Angle ESM-300 Base Unit The M-2000 spectroscopic ellipsometer system on the auto-angle base comes in three sizes depending on the mapping stage (if present). A small auto-angle base is used for systems with no mapping or a small manual mapping stage.
2. Attach the computer and monitor AC power cords to the surge suppressor. 3. Attach AC power cords to the EC box, and the M-2000 Detector and Lamp Power Supply Module. 4. Attach the other end of the AC power cords to the appropriately labeled jack on the surge suppressor(s).
Figure 3-16. Electronics Control rear view (example). Figure 3-17. M-2000 Detector and Lamp Power Supply Module Rear View (example). Computer 1. Attach the monitor cable to the computer. 2. Attach keyboard to the computer. 3. Attach the mouse to the computer.
Caution: Incorrect setup of the EC will prevent the system from operating. Only qualified personnel should change the TCP/IP address if it is necessary. Contact J.A. Woollam Co. if assistance is needed. 1. With the power off, press and hold the up and down arrows while turning the power on.
4.1 Power up Procedure Turn on the components of the M-2000 system in the following order. 1. Turn on the lamp power supply button on the M-2000 module. Wait 3 seconds and press the ignition button (not applicable on M-2000V and VI systems).
System Alignment System alignment is the adjustment of the Light source and Receiver components relative to the base of the M-2000 system (in the “straight-through” configuration). The straight-through configuration is when the angle of incidence is set at 90°; the beam of light will directly enter the receiver (the sample is not needed in this case).
Z-Height. System Check (Calibration) A System Check must be performed every time the M-2000 hardware is re- mounted on the ex situ base or in situ chamber. This is required to determine the azimuthal angles of the polarizer, compensator, and analyzer optical elements with respect to the plane of incidence.
Alignment (with Automated Tip/Tilt). System alignment is the adjustment of the source and receiver components relative to the variable angle base of the M-2000 system. It is required when the system is first delivered, when first mounting the system onto a base or chamber, or whenever the integrity of the alignment is in question.
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In the straight-through position, the gain should be either 1 or 2. Otherwise, the system is not aligned properly or the lamp needs to be replaced and/or aligned. For your specific M-2000 intensity distribution of all channels please refer to the system test report. A hard copy is shipped with each system and a soft copy is included on the backup CD.
System Alignment (with Manual Tip/Tilt). System alignment is the adjustment of the source and receiver components relative to the variable angle base of the M-2000 system. It is required when the system is first delivered, when first mounting the system onto a base or chamber, or whenever the integrity of the alignment is in question.
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M-2000 system, and this naming convention will be followed throughout these instructions. In the straight-through position (angle = 90°), the white light beam should be centered on both the Receiver Unit aperture and the 4-quadrant alignment detector that is located inside the Receiver Unit.
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In the straight-through position, the gain should be either 1 or 2. Otherwise, the system is not aligned properly or the lamp needs to be replaced and/or aligned. For your specific M-2000 intensity distribution of all channels please refer to the system test report. A hard copy is shipped with each system and a soft copy is included on the backup CD.
Figure 5-17. DC Offset correction. Mueller Matrix Mueller Matrix data is required for complicated samples with both anisotropy and depolarization. The M-2000 measures 11 Mueller Matrix elements. Figure 5-18. Mueller Matrix data acquisition. After measurement, data are displayed. To view Mueller Matrix elements, select the Graph ‘+Data’...
Table 10-1. Lamps and typical lifetimes. Lamp Installation/Replacement 1. Turn off the M-2000 Detector and Lamp Power Supply Module. Allow lamp(s) to cool for 2 hours. 2. Remove the (2) M3 SHC screws (2.5mm Allen wrench) and remove the cover on the light source.
11. Tighten the SHC screws to lock the cover closed. 12. Reset the hour meter by pressing the reset button located on the front of the M-2000 Detector and Lamp Power Supply Module. Note: When a new lamp is installed, it must be aligned so that the maximum amount of light is available for sample measurement.
1500 hours Table 10-2. Arc lamp rating and typical lifetime. Lamp Installation/Replacement 1. Turn off the M-2000 Detector and Lamp Power Supply Module. Allow lamp(s) to cool for 2 hours. 2. Put on latex gloves and safety goggles. 3. Loosen the captive screws (Flat screwdriver) and remove the access panel on the light source.
12. Reset the hour meter by pressing the reset button located on the front of the M-2000 Detector and Lamp Power Supply Module. Note: When a new lamp is installed, it must be aligned so that the maximum amount of light is available for sample measurement.
300 hours Table 10-4. QTH lamps and typical lifetime. Lamp Installation/Replacement 1. Turn off the M-2000 Detector and Lamp Power Supply Module. Allow lamp(s) to cool for 2 hours. 2. Put on latex gloves and safety goggles. 3. Remove (2) SHC screws (2.5mm Allen wrench) to remove the cover.
8. Replace the cover and tighten the SHC screws to lock the cover closed. 9. Reset the hour meter by pressing the reset button located on the front of the M-2000 Detector and Lamp Power Supply Module. Note: When a new lamp is installed, it must be aligned so that the maximum amount of light is available for sample measurement.
A System Calibration is performed when the wavelengths of the instrument are known to be incorrect or the compensator or spectrometer has been changed. These situations occur if the M-2000 box or light source has been replaced. This document describes the System Calibration procedure for determining the wavelengths and compensator calibration coefficients.
Note: DO NOT attempt this procedure unless instructed to do so by a representative of J.A. Woollam Co. Overview Performing a System Calibration involves iterating between two steps - the System calibration and the Wavelength calibration. The first step measures the positions of the optical elements and the Retardance of the compensator at the currently accepted wavelengths.
J11 and J12 are spectrometer digital line cables with color code. Be sure to connect them correctly. User key points: Is the spectrometer power LED ON? – located on the front of the M-2000 detector box. Communication Problems If the software will not communicate with the system (EC), the following parameters need to be investigated.
‘Overtemp’ indicates that the lamp power supply inside the M-2000 temp. sensor has tripped (likely cooling fan issue). The LED status is “latching” so power must be reset to change the state...
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