Laser Etch Monitor Simulation in Python: Difference between revisions
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(link to repository & basic usage info.) |
(aded example laser monitor etch) |
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Python script to simulate a Laser Etch Monitor (aka. Laser Endpoint Detection). |
Python script to simulate a Laser Etch Monitor (aka. Laser Endpoint Detection). |
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* [https://github.com/lbolla/EMpy/blob/master/examples/ex_laser_etch_monitor.py Example: Laser Etch Monitor on EMpy repository] |
* [https://github.com/lbolla/EMpy/blob/master/examples/ex_laser_etch_monitor.py Example: Laser Etch Monitor on EMpy repository] |
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* [[File:Laser Etch Monitor v2 - AlGaAs stack.png|alt= Simulated Laser Monitor Signal vs. Etch Depth.|none|thumb|400x400px|Simulated Laser Monitor Signal for a GaAs/AlGaAs periodic stack.]] |
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=== Usage === |
=== Usage === |
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# Move "ex_laser_etch_monitor.py" & "nk.py" out of the examples folder, so they're in the same directory as the "EMpy" library folder. |
# Move "ex_laser_etch_monitor.py" & "nk.py" out of the examples folder, so they're in the same directory as the "EMpy" library folder. |
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# Edit "ex_laser_etch_monitor.py" to reflect your structure. |
# Edit "ex_laser_etch_monitor.py" to reflect your structure. |
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## Set up your materials, layers, and then multi-layer stack |
## Set up your materials, layers, and then multi-layer stack. |
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## Refer to the file nk.py for material refractive index/dispersion models, or enter your own. You only need to know n & k at a single wavelength. |
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## You can use multipliers to produce repeating layers, as so: |
## You can use multipliers to produce repeating layers, as so: |
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### ''layers = [air] + '''5 * [GaAs_DBR, AlGaAs_DBR]''' + [GaAs_substrate]'' |
### ''layers = [air] + '''5 * [GaAs_DBR, AlGaAs_DBR]''' + [GaAs_substrate]'' |
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Revision as of 07:52, 14 November 2017
Python script to simulate a Laser Etch Monitor (aka. Laser Endpoint Detection).
Usage
- Make sure you have a Python installation running, that includes scientific libraries. The easiest method is to use the all-in-one installer "Anaconda". This also installs the Matlab-like IDE "Spyder".
- Download the EMpy repository by Lorenzo Bolla: https://github.com/lbolla/EMpy
- Move "ex_laser_etch_monitor.py" & "nk.py" out of the examples folder, so they're in the same directory as the "EMpy" library folder.
- Edit "ex_laser_etch_monitor.py" to reflect your structure.
- Set up your materials, layers, and then multi-layer stack.
- Refer to the file nk.py for material refractive index/dispersion models, or enter your own. You only need to know n & k at a single wavelength.
- You can use multipliers to produce repeating layers, as so:
- layers = [air] + 5 * [GaAs_DBR, AlGaAs_DBR] + [GaAs_substrate]
- In Spyder, run the script with "Interact with shell after execution" enabled. This allows you to keep messing with the figure and objects after execution, like in Matlab.