LaserMOD 3.0 User Guide

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6.A Layout
This tutorial will utilize the same structure that was created in the tutorial of Chapter 5. Copy the file that was generated
by the Chapter 5 tutorial to a new directory and rename it for use in the present tutorial. Open this renamed .las file.
No futher layout tasks are necessary.
6.B Setting the Thermal Boundary Conditions
Many laser performance characteristics, such as threashold, gain saturation, and lasing frequency depend on temperature.
This is due to the change in material parameters that results from an increase in temperature within the laser during
operation, and is known as self-heating. To determine the self-heating the temperature profile is needed, which results
from solution of the lattice heat equation. Boundary conditions are required to accurately solve this equation.