High Power Linear Arrays of 1.9 mum Laser Diodes
Abstract
We demonstrated and delivered high-power (>1OW) linear arrays of laser diodes that emit near 1.9 micronmeter. Significant applications include illuminators for night visionp06/00 cameras and new sources for gas sensing of such species as HBr, HCl and H2O. In Phase I we achieved 0.5 W of 300K CW optical power at 1.95 micronmeter with our broadened waveguide (BW)" structure. In Phase II we optimized modifications to our Phase I structure and have produced record power outputs in the 0.8 micronmeter to 1.55 micronmeter spectrum. This novel structure allows the optical mode to spread out and decreases internal losses from free-carrier absorption. Waveguide parameters were adjusted-to permit higher power output at lower threshold and reduced temperature sensitivity. The two-step waveguide active region has lower energy barrier near the quantum wells, which employs "strain- compensated" active regions. Gas source molecular beam epitaxy was to be used to make 1x5 linear arrays of lasers with 200 micronmeter apertures. Packaging innovations allow extended reliable high-power operation with standard user-friendly commercial semiconductor laser packages.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2001
- Accession Number
- ADA397421
Entities
People
- Gregory H. Olsen
- Jacobus Vermaak