A highly coherent multi-section semiconductor swept source OCT laser

Svetlana Slepneva; Anton Kovalev; Aritra Roy; Saroj Kanta Patra; Konstantin Grigorenko; Natalia Rebrova; Alexis Verschelde; Patrice Camelin; Amy Roche; Mathias Marconi; Massimo Giudici; Evgeny Viktorov; Tomasz Piwonski; Guillaume Huyet

doi:10.1117/12.2545873

2 March 2020 A highly coherent multi-section semiconductor swept source OCT laser

Svetlana Slepneva, Anton Kovalev, Aritra Roy, Saroj Kanta Patra, Konstantin Grigorenko, Natalia Rebrova, Alexis Verschelde, Patrice Camelin, Amy Roche, Mathias Marconi, Massimo Giudici, Evgeny Viktorov, Tomasz Piwonski, Guillaume Huyet

Author Affiliations +

Proceedings Volume 11274, Physics and Simulation of Optoelectronic Devices XXVIII; 112742A (2020) https://doi.org/10.1117/12.2545873
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

We show theoretically that optical feedback can be used to phase lock the successive modes of multi-section frequency-swept source lasers as a means to increase the coherence length. The time-gated feedback technique can be applied to transfer the coherence between the subsequent modes to retain the coherence along the full sweep or to synchronise two independent swept sources. In analogy with CW lasers, we derive an Adler equation describing the locking conditions. When the constant feedback is applied, the laser can operate in a self-mixing, mode-locking or chaotic regime, depending on the sweeping speed. In order to verify the theoretical results, we have developed an experimental set up and performed initial measurements with optical feedback.

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Svetlana Slepneva, Anton Kovalev, Aritra Roy, Saroj Kanta Patra, Konstantin Grigorenko, Natalia Rebrova, Alexis Verschelde, Patrice Camelin, Amy Roche, Mathias Marconi, Massimo Giudici, Evgeny Viktorov, Tomasz Piwonski, and Guillaume Huyet "A highly coherent multi-section semiconductor swept source OCT laser", Proc. SPIE 11274, Physics and Simulation of Optoelectronic Devices XXVIII, 112742A (2 March 2020); https://doi.org/10.1117/12.2545873

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