Passively Cooled TM Polarized 808-nm Laser Bars With 70% Power Conversion at 80-W and 55-W Peak Power per 100- \mum Stripe Width

Many solid state laser systems rely on transverse- magnetic polarized 808-nm diode lasers, whose efficiency is limited by the transparency current of the quantum well and whose peak power is limited by facet failure. Using optimized epitaxial growth, low voltage designs, and optimized facet reflecti...

Full description

Saved in:
Bibliographic Details
Published in:IEEE photonics technology letters 2008-08, Vol.20 (16), p.1378-1380
Main Authors: Crump, P., Wenzel, H., Erbert, G., Ressel, P., Zorn, M., Bugge, F., Einfeldt, S., Staske, R., Zeimer, U., Pietrzak, A., Trankle, G.
Format: Article
Language:English
Subjects:
Bars
Design optimization
Diode lasers
Epitaxial growth
Low voltage
Optical design
Polarization
Power conversion
Power lasers
quantum wells
semiconductor lasers
Solid lasers
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Many solid state laser systems rely on transverse- magnetic polarized 808-nm diode lasers, whose efficiency is limited by the transparency current of the quantum well and whose peak power is limited by facet failure. Using optimized epitaxial growth, low voltage designs, and optimized facet reflectivity, we demonstrate 70% power conversion efficiency at 80 W in 1-cm laser bars under continuous-wave (CW) test conditions. We assess peak power limits in single emitters and find that 100-mum stripe lasers roll thermally under the CW condition at 13 W without failure, then reach >50 W under 300-ns pulse condition, where they fail at internal defects.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2008.926827