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arXiv · 1311.7431

Coherent Frequency Combs produced by Self Frequency Modulation in Quantum Cascade Lasers

Jacob Khurgin·Yamac Dikmelik·Andreas Hugi·Jerome Faist
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Abstract

One salient characteristic of Quantum Cascade Laser (QCL) is its very shor gain recovery time that so far thwarted the attempts to achieve self-mode locking of the device into a train of single pulses. We show theoretically that four wave mixing, combined with the short gain recovery time causes QCL to operate in the self-frequency-modulated regime characterized by a constant power in time domain and stable coherent comb in the frequency domain.Coherent frequency comb may enable many potential applications of QCL in sensing and measurement.

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Jacob Khurgin, Yamac Dikmelik, Andreas Hugi, Jerome Faist. 2013-11-28. Coherent Frequency Combs produced by Self Frequency Modulation in Quantum Cascade Lasers. https://doi.org/10.1063/1.4866868

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