Current spread and overheating of high power laser bars

B. Laikhtman*, A. Gourevitch, D. Donetsky, D. Westerfeld, G. Belenky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

The theory of heating of semiconductor laser bar imbedded between two heat spreaders was discussed. The heat sources from p-cladding layer, active region n-cladding layers was considered. It was found that heat spread in the lateral direction comes mainly from the current spread and heat conductance in relatively thick substrates. The result shows that current density across the active region is nonuniform and magnitude of nonuniformity grows when the resistance p-cladding layer decreases. The thermal resistance of buffer layer affects the heating of active region and lateral width of temperature distribution and active region edges experienced higher expected temperature.

Original languageEnglish
Pages (from-to)3880-3889
Number of pages10
JournalJournal of Applied Physics
Volume95
Issue number8
DOIs
StatePublished - 15 Apr 2004

Fingerprint

Dive into the research topics of 'Current spread and overheating of high power laser bars'. Together they form a unique fingerprint.

Cite this