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Observation of the increase in turn-on delay of quantum cascade lasers under pulsed electrical pumping with finite rise time

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Published under licence by IOP Publishing Ltd
, , Citation E D Cherotchenko et al 2020 J. Phys.: Conf. Ser. 1697 012062 DOI 10.1088/1742-6596/1697/1/012062

1742-6596/1697/1/012062

Abstract

We demonstrate the experimental measurements of the turn-on delay in InAs-and InP-based quantum cascade lasers operating under pulsed electrical pumping with non-zero rise time. We report the unexpected delay time dependence on the pumping current density, that does not agree with available theoretical predictions. Performed numerical simulation of the model based on rate equations is only in qualitative, but not quantitative, agreement with our observations.

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