Share Email Print
cover

Proceedings Paper

High-brightness laser diode arrays
Author(s): Charlie Ward Trussell; Vernon King; Leslie R. Condiff
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

There are many applications where incoherent laser diode arrays are useful if high brightness can be maintained. The light emitted from the facet in high power individual devices is approximately 5 MW/cm2/steradian, but methods are needed to maintain this brightness when a number of devices are combined. The typical output is asymmetric in beam divergence and in source size. Several approaches are being evaluated at NVESD to combine linear and 2D arrays and produce a beam divergence of a few milliradians with a nearly symmetrical output. The approaches being explored include turning mirrors, combinations of refractive and diffractive optics, and novel heat sink packages. In preliminary experiments, micro-optics and diffractive optical elements have been used to colliminate the output from a 20 watt CW linear array and produce a 4 X 6 milliradian beam. Brightnesses of more than 1 MW/cm2/steradian are projected with improved components.

Paper Details

Date Published: 24 April 1995
PDF: 5 pages
Proc. SPIE 2397, Optoelectronic Integrated Circuit Materials, Physics, and Devices, (24 April 1995); doi: 10.1117/12.206872
Show Author Affiliations
Charlie Ward Trussell, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Vernon King, U.S. Army Night Vision & Electronic Sensors Directorate (United States)
Leslie R. Condiff, U.S. Army Night Vision & Electronic Sensors Directorate (United States)


Published in SPIE Proceedings Vol. 2397:
Optoelectronic Integrated Circuit Materials, Physics, and Devices
Manijeh Razeghi; Yoon-Soo Park; Gerald L. Witt, Editor(s)

© SPIE. Terms of Use
Back to Top