Multi-stable operation of a semiconductor ring laser due to spatial hole-burning

Daan Lenstra (Corresponding author), T.T.M. (Perry) van Schaijk, Erwin A.J.M. Bente

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We have theoretically analyzed multi-stability of a symmetric ring laser operating in one single longitudinal mode in the presence of coherent back scattering and inversion-grating-induced mutual coupling of the clockwise and counter-clockwise modes. Our model takes into account the inversion grating created by the standing-wave pattern of the interfering counter-propagating fields and avoids the frequently used ad-hoc introduction of cross and self-saturation coefficients. Our study confirms that linear coupling due to waveguide irregularities or weak interface reflections leads to an effective pump strength below which the clock and anti-clock wise modes are symmetrically coupled whereas above which the grating-induced coupling leads to multi-stability.
Original languageEnglish
Article number8877748
Number of pages7
JournalIEEE Journal of Quantum Electronics
Issue number6
Publication statusPublished - 20 Dec 2019


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