The effect of the pump pulse duration and duty cycle on power characteristics of quantum cascade lasers
Dudelev V. V.1, Cherotchenko E. D.1, Vrubel I. I.1, Mikhailov D. A.1, Chistyakov D. V.1, Losev S. N.1, Babichev A. V.1, Kognovitskaya E. A.1, Lyutetskii A. V.1, Slipchenko S. O.1, Pikhtin N. A.1, Gladyshev A. G.2, Novikov I. I.2,3, Kuchinskii V. I.1, Papylev D. S.3, Karachinsky L. Ya.2,3, Egorov A. Yu.2, Sokolovskii G. S.1
1Ioffe Institute, St. Petersburg, Russia
2Connector Optics LLC, St. Petersburg, Russia
3ITMO University, St. Petersburg, Russia
Email: v.dudelev@mail.ru
We experimentally and theoretically investigated the quantum cascade lasers (QCLs) characteristics at various duty cycles and different repetition rates of pumping pulses. We show theoretically and experimentally that short-pulse pumping should be used to obtain high average power while maintaining peak power values. The maximum average output power of more than 100 mW has been experimentally demonstrated. Further increase in average power requires better heat dissipation from the active region. Keywords: integrated optics, quantum cascade laser.
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