Journal article
Synchronous upconversion of quantum cascade lasers in AgGaS2
We investigate synchronous upconversion of a pulsed, tunable quantum cascade laser (QCL) in the important 5.4–10.2 µm range, with a 30 kHz, Q-switched, 1064 nm laser. The possibility to accurately control the repetition rate and pulse duration of the QCL results in a good temporal overlap with the Q-switched laser, leading to an upconversion quantum efficiency of 16% in a 10 mm-long AgGaS2 crystal.
We investigate the noise properties of the upconversion process in terms of pulse-to-pulse energy stability and timing jitter. For QCL pulses in the 30–70 ns range the upconverted pulse-to-pulse stability is approximately 1.75%. The demonstrated combination of broad tunability and high signal to noise in the system is well-suited for mid-IR spectral analysis of highly absorbing samples.
Language: | English |
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Year: | 2022 |
Pages: | 5622-5625 |
ISSN: | 15394794 and 01469592 |
Types: | Journal article |
DOI: | 10.1364/OL.472219 |
ORCIDs: | Tidemand-Lichtenberg, Peter , Pedersen, Christian and Pedersen, Rasmus L. |