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physics.optics2021★ 6 cited
Observation of long turn-on delay in pulsed quantum cascade lasers
E. D. Cherotchenko, V. V. Dudelev, D. A. Mikhailov +16
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, wh…
physics.optics2021★ 8 cited
Optical power detector with broad spectral coverage, high detectivity and large dynamic range
Jussi Rossi, Juho Uotila, Sucheta Sharma +6
Optical power measurements are needed in practically all technologies based on light. Here we report a general-purpose optical power detector based on the photoacoustic effect. Opt…