LD pumped high efficiency, high power Tm:YLF laser with adhesive-free bond laser composites

Xiaodong Mu; Helmuth Meissner; Huai-Chuan Lee

doi:10.1117/12.873595

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15 February 2011 LD pumped high efficiency, high power Tm:YLF laser with adhesive-free bond laser composites

Xiaodong Mu, Helmuth Meissner, Huai-Chuan Lee

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Proceedings Volume 7912, Solid State Lasers XX: Technology and Devices; 79121B (2011) https://doi.org/10.1117/12.873595
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

Adhesive-free bonded (AFB®) un-doped end-capped and segmentally bonded Tm:YLF laser composites have been investigated for high efficiency LD-pumped laser operations. With a fiber coupled 792-nm diode laser as pump source and a single-end pump arrangement, an optical-to-optical laser efficiency of 48.3% (quantum efficiency of 116%) and a slope efficiency of 55% (quantum efficiency of 132%) have been measured at the laser output wavelength of 1.908 μm. A maximum laser output power up to 29 W has been also achieved before the thermal stress fracture limit. The high laser efficiencies and output power can be attributed to the two-for-one cross-relaxation process and the efficient thermal management of the AFB laser composites.

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Xiaodong Mu, Helmuth Meissner, and Huai-Chuan Lee "LD pumped high efficiency, high power Tm:YLF laser with adhesive-free bond laser composites", Proc. SPIE 7912, Solid State Lasers XX: Technology and Devices, 79121B (15 February 2011); https://doi.org/10.1117/12.873595

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