View source for Laser Etch Monitor Simulation in Python

Python script to simulate a Laser Etch Monitor (aka. Laser Endpoint Detection).
* [https://github.com/lbolla/EMpy/blob/master/examples/ex_laser_etch_monitor.py Laser Etch Monitor example on EMpy repository]

* [[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.]]

=== Usage ===
# Make sure you have a Python installation running, that includes scientific libraries.  The easiest method is to use the all-in-one installer "[https://www.anaconda.com/download/ 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.