Improvement of short pulse operation of AlGaAs quantum-well lasers by temperature increase

I. Y. Khrushchev, I. H. White, R. V. Penty

Research output: Contribution to journalArticle


A theoretical model has been formulated using lumped rate equations to analyze the temperature dependence of the Q-switched (i.e., saturable absorber operated) and gain-switched operation of a quantum-well laser. The results are found to agree with experimental results obtained from AlGaAs quantum-well devices, and show that improvement in the pulse energy in Q-switched and gain-switched lasers can be achieved by optimizing the operating temperature above room temperature. With increasing temperature, the pulse energy increases due to the pulses broadening while the peak power remains approximately constant. The effect is mainly attributed to the decrease of the gain with temperature.

Original languageEnglish
Pages (from-to)281-283
Number of pages3
JournalApplied Physics Letters
Issue number3
Publication statusPublished - 1 Dec 1998

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this