Abstract
Abstract We present the results of performance modeling of a diode-pumped solid-state HiLASE laser designed for use in inertial fusion energy power plants. The main amplifier concept is based on a He-gas-cooled multi-slab architecture similar to that employed in Mercury laser system. Our modeling quantifies the reduction of thermally induced phase aberrations and average depolarization in ${\mathrm{Yb}}^{{3+}}$ :YAG slabs by a combination of helium cryogenic cooling and properly designed (doping/width) cladding materials.
Highlights
Laser-driven inertial fusion energy is one of the most promising approaches for the sustainable generation of electrical power
Recent studies have shown that diode-pumped solid-state lasers (DPSSLs) are the most promising laser systems to reach the requirements for such a driver, namely multi-100 kJ energy of ns pulses, multiHz repetition rates and high wall-plug efficiencies between 10% and 15%[3, 4]
The HiLASE team is developing an Yb3+:YAG gain medium based concept for a 100 J/10 Hz DPSSL amplifier that could potentially be scaled to the kJ regime[5,6,7]
Summary
Laser-driven inertial fusion energy is one of the most promising approaches for the sustainable generation of electrical power. While there are several projects around the world that are trying to achieve the same goal[8,9,10,11], HiLASE is expected to be completed in May 2015 and it will be the world’s highest pulse energy short pulse (2–10 ns) DPSSL at 100 J and 1–10 Hz. In this paper, we examine the predicted performance of a kJ-class HiLASE laser which is based on a gas-cooled slabstack architecture. We examine the predicted performance of a kJ-class HiLASE laser which is based on a gas-cooled slabstack architecture It uses multiple thin slabs of Yb3+:YAG
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