WIAS Preprint No. 3116, (2024)

Modeling and simulation of the cascaded polarization-coupled system of broad-area semiconductor lasers


Authors

  • Radziunas, Mindaugas
    ORCID: 0000-0003-0306-1266
  • Raab, Volker

2020 Mathematics Subject Classification

  • 78A60 78A05 65Z05 78A55 78-04

Keywords

  • Semiconductor laser, high-power, broad-area, edge-emitting, rectified polarization beam combining, scalability, Lyot filter, modeling, simulations

DOI

10.20347/WIAS.PREPRINT.3116

Abstract

We consider a brightness- and power-scalable rectified polarization beam combining scheme for high-power, broad-area edge-emitting semiconductor laser diodes. The coupling of 2m emitters is achieved through Lyot-filtered optical reinjection from a specially designed multi-stage external cavity, which forces individual diodes to lase on interleaved frequency combs with overlapping envelopes. Simulations of up to sixteen coupled emitters and analysis of the calculated beams suggest that, under ideal conditions, a beam coupling efficiency of approximately 90% can be expected. Reducing optical losses within the external cavity is crucial for improving this efficiency in experimental systems.

Appeared in

  • IEEE J. Sel. Top. Quantum Electron., 31 (2025), pp. 1501108/1--1501108/8, DOI 10.1109/JSTQE.2024.3442429 with the new title ``Modeling and simulation of a cascaded polarization-coupled system of broad-area semiconductor lasers''.

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