Theory of phase-locking of multi-stable fiber amplifier arrays

Erik J. Bochove; Mohammad R. Zunoubi; Christopher J. Corcoran

doi:10.1117/12.2031605

14 November 2013 Theory of phase-locking of multi-stable fiber amplifier arrays

Erik J. Bochove, Mohammad R. Zunoubi, Christopher J. Corcoran

Proceedings Volume 8885, Laser-Induced Damage in Optical Materials: 2013; 888515 (2013) https://doi.org/10.1117/12.2031605
Event: SPIE Laser Damage, 2013, Boulder, Colorado, United States

Abstract

We solve the time-independent (o.d.e.) propagation equations for the c.w. operation of an array of externally coupled fiber amplifiers with internal reflection, in which Kerr and resonant nonlinearities play a part. A transcendental equation for each amplifier is obtained, collectively yielding multiple distinct array solutions, which are characterized in terms of their mutual phase coherence. We find that the two types of nonlinearity (Kerr and resonant) affect the solutions in distinct parameter regimes. The relation of Strehl ratio to output power at fixed wavelength and feedback level reveals that phase-locking may occur due to nonlinearity as opposed to mode selection, in accordance with recent experiments (H-S Chiang, J.R. Leger, J. Nilsson and J. Sahu, Optics Letters (2013)). The individual lasing instability (“rogue” lasing) anticipated by A.E. Siegman in 2004 we observed only at low feedback levels in a small number of cases.

Citation Download Citation

Erik J. Bochove, Mohammad R. Zunoubi, and Christopher J. Corcoran "Theory of phase-locking of multi-stable fiber amplifier arrays", Proc. SPIE 8885, Laser-Induced Damage in Optical Materials: 2013, 888515 (14 November 2013); https://doi.org/10.1117/12.2031605

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