16 March 2016 Yb:YAG ceramic-based laser driver for Inertial Fusion Energy (IFE)
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We report on a new class of laser amplifiers for inertial confinement fusion (ICF) drivers based on a Yb:YAG ceramic disk in an edge-pumped configuration and cooled by a high-velocity gas flow. The Yb lasant offers very high efficiency and low waste heat. The ceramic host material has a thermal conductivity nearly 15-times higher than the traditionally used glass and it is producible in sizes suitable for a typical 10- to 20-kJ driver beam line. The combination of high lasant efficiency, low waste heat, edge-pumping, and excellent thermal conductivity of the host, enable operation at 10 to 20 Hz at over 20% wall plug efficiency while being comparably smaller and less costly than recently considered face-pumped alternative drivers using Nd:glass, Yb:S-FAP, and cryogenic Yb:YAG. Scalability of the laser driver over a broad range of sizes is presented.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John Vetrovec, John Vetrovec, Drew A. Copeland, Drew A. Copeland, Amardeep S. Litt, Amardeep S. Litt, "Yb:YAG ceramic-based laser driver for Inertial Fusion Energy (IFE)", Proc. SPIE 9726, Solid State Lasers XXV: Technology and Devices, 972619 (16 March 2016); doi: 10.1117/12.2220008; https://doi.org/10.1117/12.2220008


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