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

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

doi:10.1063/1.120748

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

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

Vice Chancellor's Office

University of Bristol

Research output: Contribution to journal › Article › peer-review

Abstract

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 language	English
Pages (from-to)	281-283
Number of pages	3
Journal	Applied Physics Letters
Volume	72
Issue number	3
DOIs	https://doi.org/10.1063/1.120748
Publication status	Published - 1 Dec 1998

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.120748

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abstract = "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.",

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AU - Penty, R. V.

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Y1 - 1998/12/1

N2 - 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.

AB - 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.

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

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