Numerical Simulation of Optoelectronic Devices
Santa Barbara, March 25-27, 2001
"Introduction to Laser Diode Simulation using
PICS3D / LASTIP"
Joachim Piprek (University of California at Santa Barbara)
The tutorial starts with an outline of main physical effects and equations using real-world simulation examples. Software options are reviewed. The "Photonic Integrated Circuit Simulator in 3D" (PICS3D) is introduced as well as its 2D version LASTIP. Both software packages combine electrical, optical, and thermal calculations self-consistently. Model options and material data base are explained and critical parameters are discussed. File structure and command language are outlined using in-plane lasers as well as vertical-cavity lasers as example. The detailed discussion of actual laser simulations helps to understand tuning procedures required to reproduce laser measurements. Such model calibration is of great importance to later obtain reliable predictions. Typical simulation results are explained."New Features in PICS3D / LASTIP / APSYS"
An overview of recent additions to the physical models of PICS3D, LASTIP, and APSYS is given. This includes band-to-band tunneling, bandstructure and gain of wurtzite semiconductors, piezoelectric effects on the the quantum well gain, the enhanced effective index method for in-plane and for vertical-cavity lasers (VCLs), extended options for VCL mirrors, modifications of the thermionic emission model, and new 3D simulation options. Application examples are demonstrated and the corresponding command structure is explained.