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17 March 2023 Quantum cascade laser frequency combs induced by a giant Kerr nonlinearity
B. Schwarz, N. Opacak, F. Pilat, D. Kazakov, S. Dal Cin, M. Beiser, L. L. Columbo, J. Hillbrand, M. Piccardo, F. Capasso
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Proceedings Volume PC12440, Novel In-Plane Semiconductor Lasers XXII; PC124400F (2023) https://doi.org/10.1117/12.2651688
Event: SPIE OPTO, 2023, San Francisco, California, United States
Abstract
Optical nonlinearities are known to coherently couple the amplitude and the phase of light, which can lead to the formation of perfectly periodic waveforms – known as frequency combs. Recently, self-starting frequency combs that do not rely on the emission of short pulses are appearing in numerous semiconductor laser types, among which is the quantum cascade laser. Here we discuss the role of a Bloch gain induced giant Kerr nonlinearity in Fabry-Pérot and ring cavity QCLs, paving the way towards electrically pumped Kerr combs.
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B. Schwarz, N. Opacak, F. Pilat, D. Kazakov, S. Dal Cin, M. Beiser, L. L. Columbo, J. Hillbrand, M. Piccardo, and F. Capasso "Quantum cascade laser frequency combs induced by a giant Kerr nonlinearity", Proc. SPIE PC12440, Novel In-Plane Semiconductor Lasers XXII, PC124400F (17 March 2023); https://doi.org/10.1117/12.2651688
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KEYWORDS
Frequency combs
Quantum cascade lasers
Nonlinear optics
Semiconductor lasers
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