WIAS Preprint No. 2604, (2019)

Numerical study of coherence of optical feedback in semiconductor laser dynamics



Authors

  • Radziunas, Mindaugas
  • Little, Douglas J.
  • Kane, Deborah M.

2010 Mathematics Subject Classification

  • 78A60 37N20 35Q60 78-04 60G15

2008 Physics and Astronomy Classification Scheme

  • 42.55.Px 42.60.Mi 42.65.Sf 42.25.Kb 42.60.Da

Keywords

  • Semiconductor lasers, modeling, dynamics, optical feedback, coherence, external cavity, traveling wave

DOI

10.20347/WIAS.PREPRINT.2604

Abstract

The nonlinear dynamics of semiconductor laser with coherent, as compared to incoherent, delayed optical feedback systems have been discussed and contrasted in prior research literature. Here, we report simulations of how the dynamics change as the coherence of the optical feedback is systematically varied from being coherent to incoherent. An increasing rate of phase disturbance is used to vary the coherence. An edge emitting, 830nm, Fabry Perot semiconductor laser with a long external cavity is simulated. Following this study, consideration of prior and future experimental studies should include evaluation of where on the continuum of partial coherence the delayed optical feedback sits. Partial coherence is a parameter that will affect the dynamics.

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