Computational Resources

Lehigh provides computational capabilities for various aspects of semiconductor optoelectronics and semiconductor nanostructure devices.

Many advanced computational techniques on the physics of semiconductor nanostructure and photonic device design have been developed in-house. They include programs to simulate and design optoelectronics devices, vertical cavity surface emitting lasers, solar cells, thermoelectric materials, carrier transport, thermionic emission of carriers, quantum well/dot intermixing process, band structure and optical gain of semiconductor nanostructure.

Advanced photonic computational techniques for photonic crystals, 2-D and 3-D complex optical waveguide, integrated optics, and finite-difference time-domain analysis are also developed in-house lab. Researchers also have access to Lehigh's SGI Altix 350 supercomputer, which is a symmetric multiprocessor (SMP) machine consisting of 32 CPUs, 128 GB of shared memory and 1 TB of hard disk capacity. Numerical models based on technology computer aided design (TCAD) is also available for accurate modeling of III-Nitride and III-V semiconductor optoelectronics devices. The numerical model takes into considerations the electrical, optical, and thermal effects in simulating the device structures.

In particular, the numerical models include models for carrier and heat transport, quantum effects, heterostructures, carrier capture in QW, band structures, spontaneous emission and optical gain simulations, and full-wave solutions of the Maxwell equations to account for physical optics in advanced devices.