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

Autor: Cherotchenko, E. D., Dudelev, V. V., Mikhailov, D. A., Losev, S. N., Babichev, A. V., Gladyshev, A. G., Novikov, I. I., Lutetskiy, A. V., Veselov, D. A., Slipchenko, S. O., Pikhtin, N. A., Karachinsky, L. Ya., Denisov, D. V., Kuchinskii, V. I., Kognovitskaya, E. A., Egorov, A. Yu., Teissier, R., Baranov, A. N., Sokolovskii, G. S.
Rok vydání: 2021
Předmět:
Druh dokumentu: Working Paper
DOI: 10.1109/JLT.2021.3134837
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: arXiv