Reciprocity principle and nonequivalence of counterpropagating modes in whistle-geometry ring lasers

Hemashilpa Kalagara; Fei-Hung Chu; Gennady A. Smolyakov; Marek Osiński

doi:10.1117/12.2214602

22 March 2016 Reciprocity principle and nonequivalence of counterpropagating modes in whistle-geometry ring lasers

Hemashilpa Kalagara, Fei-Hung Chu, Gennady A. Smolyakov, Marek Osiński

Proceedings Volume 9742, Physics and Simulation of Optoelectronic Devices XXIV; 974213 (2016) https://doi.org/10.1117/12.2214602
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

Greatly enhanced high-speed modulation performance has been recently predicted in numerical calculations for a novel injection-locking scheme involving a distributed Bragg reflector master laser monolithically integrated with a unidirectional whistle-geometry semiconductor micro ring laser. In this work, we confirm the unidirectionality of the whistle-geometry configuration through rigorous three-dimensional finite-difference time-domain (FDTD) simulation by showing a strong asymmetry in photon lifetimes between the two counter propagating modes. At the same time, we explain why this result does not violate the Helmholtz reciprocity principle.

Citation Download Citation

Hemashilpa Kalagara, Fei-Hung Chu, Gennady A. Smolyakov, and Marek Osiński "Reciprocity principle and nonequivalence of counterpropagating modes in whistle-geometry ring lasers", Proc. SPIE 9742, Physics and Simulation of Optoelectronic Devices XXIV, 974213 (22 March 2016); https://doi.org/10.1117/12.2214602

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