High duty cycle operation of quantum cascade lasers based on graded superlattice active regions

High duty cycle operation of quantum cascade lasers based on graded superlattice active regions

High duty cycle operation of quantum cascade superlattice lasers with graded superlattice active regions is investigated with the goal of achieving high average optical power. The optical output power increases with pulse width and decreases with heat sink temperature. This behavior is explained on...

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Veröffentlicht in:Journal of applied physics 2001-06, Vol.89 (12), p.7735-7738
Hauptverfasser: Martini, Rainer, Gmachi, Claire, Tredicucci, Alessandro, Capasso, Federico, Hutchinson, Albert L., Sivco, Deborah L., Cho, Alfred Y., Whittaker, Edward A.
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Sprache:eng
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CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
HEAT SINKS
LASERS
OSCILLATIONS
PHYSICS
SUPERLATTICES
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container_end_page 7738
container_issue 12
container_start_page 7735
container_title Journal of applied physics
container_volume 89
creator Martini, Rainer
Gmachi, Claire
Tredicucci, Alessandro
Capasso, Federico
Hutchinson, Albert L.
Sivco, Deborah L.
Cho, Alfred Y.
Whittaker, Edward A.
description High duty cycle operation of quantum cascade superlattice lasers with graded superlattice active regions is investigated with the goal of achieving high average optical power. The optical output power increases with pulse width and decreases with heat sink temperature. This behavior is explained on the basis of the laser core temperature oscillations during the pulsed, high duty cycle operation. Between 175 and 325 K heat sink temperature, optimum duty cycles vary from 10% to 1% and average power levels vary from 50 to 1 mW for various lasers used in this study.
doi_str_mv 10.1063/1.1358320
format Article
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subjects CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
HEAT SINKS
LASERS
OSCILLATIONS
PHYSICS
SUPERLATTICES
title High duty cycle operation of quantum cascade lasers based on graded superlattice active regions
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