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arXiv · 2011.02432

Influence of optical feedback on harmonic pulsating solutions of long-cavity mode-locked VECSELs

A. Bartolo·T. Seidel·N. Vigne·A. Garnache·G. Beaudoin·I. Sagnes·G. Huyet·M. Giudici·J. Javaloyes·S. Gurevich·M. Marconi
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Abstract

We analyse the effect of optical feedback on the dynamics of external-cavity mode-locked semiconductor lasers operated in the long cavity regime. Depending on the ratio between the cavity round-trip time and the feedback delay, we show experimentally that feedback acts as a solution discriminator that either reinforces or hinders the appearance of one of the multiple coexisting mode-locked harmonic solutions. Our theoretical analysis reproduces well the experiment. We identify asymmetrical resonance tongues due to the temporal symmetry breaking induced by gain depletion.

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A. Bartolo, T. Seidel, N. Vigne, A. Garnache, G. Beaudoin, I. Sagnes, G. Huyet, M. Giudici, J. Javaloyes, S. Gurevich, M. Marconi. 2020-11-04. Influence of optical feedback on harmonic pulsating solutions of long-cavity mode-locked VECSELs. https://doi.org/10.1364/ol.414353

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