Fast dynamics of low-frequency fluctuations in a quantum-dot laser with optical feedback | Zendy

Kazuto Yamasaki | Zendy; Kazutaka Kanno | Zendy; Atsushi Matsumoto | Zendy; Kouichi Akahane | Zendy; Naokatsu Yamamoto | Zendy; Makoto Naruse | Zendy; Atsushi Uchida | Zendy

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Fast dynamics of low-frequency fluctuations in a quantum-dot laser with optical feedback

Author(s) -

Kazuto Yamasaki,

Kazutaka Kanno,

Atsushi Matsumoto,

Kouichi Akahane,

Naokatsu Yamamoto,

Makoto Naruse,

Atsushi Uchida

Publication year - 2021

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.426268

Subject(s) - quantum dot laser , physics , semiconductor laser theory , quantum dot , laser , bifurcation diagram , quantum optics , quantum fluctuation , optics , bifurcation , quantum , optoelectronics , quantum mechanics , nonlinear system

We experimentally investigate the complex dynamics of a multi-mode quantum-dot semiconductor laser with time-delayed optical feedback. We examine a two-dimensional bifurcation diagram of the quantum-dot laser as a comprehensive dynamical map by changing the injection current and feedback strength. We found that the bifurcation diagram contains two different parameter regions of low-frequency fluctuations. The power-dropout dynamics of the low-frequency fluctuations are observed in the sub-GHz region, which is considerably faster than the conventional low-frequency fluctuations in the MHz region. Comparing the dynamics of quantum-dot laser with those of single- and multi-mode quantum-well semiconductor lasers reveals that the fast low-frequency fluctuation dynamics are unique characteristics of quantum-dot lasers with time-delayed optical feedback.

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