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

Autor: 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
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Popis: 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.
Databáze: OpenAIRE