Observation of long turn-on delay in pulsed quantum cascade lasers

E. D. Cherotchenko; V. V. Dudelev; D. A. Mikhailov; S. N. Losev; A. V. Babichev; A. G. Gladyshev; I. I. Novikov; A. V. Lutetskiy; D. A. Veselov; S. O. Slipchenko; N. A. Pikhtin; L. Ya. Karachinsky; D. V. Denisov; V. I. Kuchinskii; E. A. Kognovitskaya; A. Yu. Egorov; R. Teissier; A. N. Baranov; G. S. Sokolovskii

doi:10.1109/jlt.2021.3134837

arXiv · 2106.13658

Observation of long turn-on delay in pulsed quantum cascade lasers

E. D. Cherotchenko·V. V. Dudelev·D. A. Mikhailov·S. N. Losev·A. V. Babichev·A. G. Gladyshev·I. I. Novikov·A. V. Lutetskiy·D. A. Veselov·S. O. Slipchenko·N. A. Pikhtin·L. Ya. Karachinsky·D. V. Denisov·V. I. Kuchinskii·E. A. Kognovitskaya·A. Yu. Egorov·R. Teissier·A. N. Baranov·G. S. Sokolovskii

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Abstract

We present an experimental study of the turn-on delay in pulsed mid-infrared quantum cascade lasers. We report the unexpectedly long delay time depending on the pumping current, which does not agree with conventional theoretical predictions for step-like excitation. Similar behavior has been observed in InP- and InAs-based QCLs emitting near 8${\mu}$m. Numerical simulations performed using a model based on rate equations for excitation by current pulses with non-zero rise time provide fair agreement with our observations.

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E. D. Cherotchenko, V. V. Dudelev, D. A. Mikhailov, S. N. Losev, A. V. Babichev, A. G. Gladyshev, I. I. Novikov, A. V. Lutetskiy, D. A. Veselov, S. O. Slipchenko, N. A. Pikhtin, L. Ya. Karachinsky, D. V. Denisov, V. I. Kuchinskii, E. A. Kognovitskaya, A. Yu. Egorov, R. Teissier, A. N. Baranov, G. S. Sokolovskii. 2021-06-25. Observation of long turn-on delay in pulsed quantum cascade lasers. https://doi.org/10.1109/jlt.2021.3134837

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