Download User`s Manual for GAIN Program

Table of Contents
Chapter 1 Introduction ................................................................................................................................ 1
Chapter 2 Computation of Material Composition and Band Edges ........................................................ 2
2.1 Input Parameters for Each Material System........................................................................................ 2
2.2 Output Parameters............................................................................................................................... 9
2.3 Running the Software for Material Composition and Band Edge Calculations ................................ 10
2.3.1
Selecting the Material System ................................................................................................... 11
2.3.2
Band edge out put files .............................................................................................................. 15
Chapter 3 Energy Band Calculations ....................................................................................................... 16
3.1 Brief Overview for Energy Band Calculations .................................................................................. 16
3.2 Explanations on Input and Output Parameters ................................................................................. 19
3.2.1 Calculating the Energy Values........................................................................................................ 19
3.2.2 Inputting Structure Parameters........................................................................................................ 19
3.2.3 Selecting the Material System......................................................................................................... 20
3.2.4 Strain Input ..................................................................................................................................... 20
3.2.5 Calculation of Energy Values ......................................................................................................... 20
3.2.6 Calculation of Envelope Functions and Confinement Factors ........................................................ 21
3.3 Input and Output Files ....................................................................................................................... 21
3.3.1 The Input Files ................................................................................................................................ 21
3.3.2 The Output Files ............................................................................................................................. 22
3.4 Running the Software for Energy Calculations, an Example............................................................. 26
3.4.1 Conduction Band Energy Calculations ........................................................................................... 27
3.4.2 Conduction Band Heavy and Light Hole Band Energy Calculations ............................................. 33
Chapter 4 Simulations of Gain and Laser Properties ............................................................................. 35
4.1 Theories for computations of Gain and Laser Properties.................................................................. 35
4.1.1 Gain Calculations............................................................................................................................ 35
4.1.2 Threshold Current Density (Jth) and Slope Efficiency Calculations .............................................. 37
4.2 Input File ........................................................................................................................................... 39