Multi-core photonic crystal fibers for high-power laser

Laurent Michaille; Charlotte R. Bennett; David M. Taylor; Terence J. Shepherd

doi:10.1117/12.657885

23 February 2006 Multi-core photonic crystal fibers for high-power laser

Laurent Michaille, Charlotte R. Bennett, David M. Taylor, Terence J. Shepherd

Proceedings Volume 6102, Fiber Lasers III: Technology, Systems, and Applications; 61020W (2006) https://doi.org/10.1117/12.657885
Event: Lasers and Applications in Science and Engineering, 2006, San Jose, California, United States

Abstract

In this paper, we show that it is possible to arrange for an 18-core photonic crystal fibre (PCF) laser to operate in the fundamental in-phase supermode. The mode divergence is as small as 12.5 mrad. The equivalent mode field diameter is about 52 μm. Mode filtering is provided by a pinhole in the far field. The laser is Q-switched using an Acousto-Optic Modulator (AOM). An output power up to 65 W at a repetition rate of 50 kHz (corresponding to 1.3 mJ per pulse), with 22 ns short pulses, has been obtained with a slope efficiency of 46%. Ongoing amplification experiments are briefly described. Limiting factors (end facet damage threshold and thermal dissipation) are discussed for further scaling of this laser concept.

Citation Download Citation

Laurent Michaille, Charlotte R. Bennett, David M. Taylor, and Terence J. Shepherd "Multi-core photonic crystal fibers for high-power laser", Proc. SPIE 6102, Fiber Lasers III: Technology, Systems, and Applications, 61020W (23 February 2006); https://doi.org/10.1117/12.657885

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