16 May 2006 MWIR LED array for high temperature target simulation
Author Affiliations +
We report here the light emission from IR interband-cascade (IC) Type-II-super lattice LED structures. The light emission is observed from bottom side through the substrate. We employed two different IC epitaxial structures for the LED experiments consisting of 9 or 18 periods of active super lattice gain regions separated by multilayer injection regions. The light output (and the voltage drop) of the LEDs is observed to increase with decrease of device operating temperature from room temperature (300 K) to liquid helium temperature (4 K). At low temperature the light emission as well as voltage drop has peak like structure with device injection currents. We observed a red shift in peak wavelength of LED emission with higher DC injection current where as blue shift due to pulsed injection current.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Naresh C. Das, W. Chang, George Simonis, and M. Tobin "MWIR LED array for high temperature target simulation", Proc. SPIE 6208, Technologies for Synthetic Environments: Hardware-in-the-Loop Testing XI, 62080N (16 May 2006); doi: 10.1117/12.665864; https://doi.org/10.1117/12.665864

Back to Top