Low-cost DH and quantum well laser array developmentThe intial results of a program aimed at developing low-cost diode laser arrays for use as solid-state laser pumps are reported. MOCVD is used to demonstrate excellent run-to-run reproducibility in emission wavelength, threshold current density, and quantum efficiency. For this first experimental series, J(th) values of approximately 1310 Amps/sq cm were obtained for broad-area unthinned devices from the growth runs. Differential quantum efficiencies of between 41 percent and 47 percent were measured on the non-facet-coated devices from all four runs. Single quantum well, separate confinement heterostructure lasers fabricated from wafers grown in the same MOCVD reactor exhibited near single-mode emission, with J(th) values of approximately 300 Amps/sq cm. Photoluminescence data confirm quantum well widths of 80 A and 150 A for two different MOCVD growth runs.
Document ID
19900044937
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Linden, Kurt J. (Spire Corp. Bedford, MA, United States)
Geoffroy, Leo M. (Spire Corp. Bedford, MA, United States)
Pesarcik, Scott F. (Spire Corp. Bedford, MA, United States)
Magee, Carl J. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Lasers And Masers
Meeting Information
Meeting: Laser Applications in Meteorology and Earth and Atmospheric Remote Sensing