Download User`s Manual for GAIN Program

Chapter 1 Introduction
The GAIN program is a software program that is used to calculate the gain and
related parameters in semiconductor quantum well laser structures. This tool can be used
mainly in optoelectronics and photonics fields. It is free and runs under DOS and
Windows based platforms.
The software works for thirteen material systems most of which are used to make
semiconductor quantum well lasers, find the band offsets and energy levels in both
conduction and valence bands, and calculate the gain curves with respect to wavelength
and current density. The program uses one-dimensional analysis in computations, and
gives fast and practically accurate results.
This software was developed by Dr. Tso-min Chou in the Department of Electrical
Engineering at Southern Methodist University, Dallas, TX. One can find similar
commercial software that serves for similar purposes. However, the GAIN program is
very powerful 1-D analysis software. Since it was developed, the GAIN program has
been extensively used and there is enough experience to verify that it produces fairly
good results as 1-D analysis software. Although it is so, we do not give any warranty to
your calculations. You might take the results from this software as a comparison,
validation, or double check for your results. Please provide us feedback by sending your
comments and/or comparison of your own calculations to those by GAIN program.
The contributions in preparing this User’s Manual by the members of the Photonics
Group at SMU are greatly appreciated.
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