23 February 2006 Multi-core photonic crystal fibers for high-power laser
Author Affiliations +
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.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Laurent Michaille, Laurent Michaille, Charlotte R. Bennett, Charlotte R. Bennett, David M. Taylor, David M. Taylor, Terence J. Shepherd, 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); doi: 10.1117/12.657885; https://doi.org/10.1117/12.657885


Back to Top