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Design of a kJ-class HiLASE laser as a driver for inertial fusion energy

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High Power Laser Science and Engineering 2014年第2期2卷 1-10页

作者： Antonio Lucianetti Magdalena Sawicka Ondrej Slezak Martin Divoky jan pilar Venkatesan Jambunathan Stefano Bonora Roman Antipenkov Tomas Mocek HiLASE Project Institute of Physics AS CR Na Slovance 2 18221 Prague Czech Republic CNR-IFN Via Trasea 7 35131 Padova Italy ELI Beamlines Project Institute of Physics AS CR Na Slovance 2 18221 Prague Czech Republic

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 Yb3+:YAG slabs by a combination of helium cryogenic cooling and properly designed(doping/width) cladding materials.

关键词： ASE birefringence cryogenic cooling slab lasers thermooptic effects

Beam shaping in the high-energy kW-class laser system Bivoj at the HiLASE facility

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High Power Laser Science and Engineering 2023年第6期11卷 130-138页

作者： Tomáš Paliesek Petr Navrátil jan pilar Martin Divoký Martin Smrž Tomáš Mocek HiLASE Centre Institute of Physics of the Czech Academy of SciencesDolni BrezanyCzech Republic Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in PraguePragueCzech Republic

A fully automatic fail-safe beam shaping system based on a liquid crystal on a silicon spatial light modulator has been implemented in the high-energy kilowatt-average-power nanosecond laser system *** shaping system corrects for gain nonuniformity and wavefront aberrations of the front-end of the *** beam intensity profile and the wavefront at the output of the front-end were successfully improved by *** beam homogeneity defined by the beam quality parameters was improved two to three *** root-mean-square value of the wavefront was improved more than 10 ***,the shaped beam from the second preamplifier led to improvement of the beam profile at the output of the first main *** shaping system is also capable of creating nonordinary beam shapes,imprinting cross-references into the beam,or masking certain parts of the beam.

关键词： beam shaping high-average-power laser high-energy laser liquid crystal on silicon spatial light modulator wavefront shaping

Kilowatt-class high-energy frequency conversion to 95 J at 10 Hz at 515 nm

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High Power Laser Science and Engineering 2023年第5期11卷 153-156页

作者： Martin Divoky Jonathan Phillips jan pilar Martin Hanus Petr Navratil Ondrej Denk Tomas Paliesek Patricie Severova Danielle Clarke Martin Smrz Thomas Butcher Chris Edwards John Collier Tomas Mocek HiLASE Centre Institute of Physics of the Czech Academy of SciencesDolni BrezanyCzech Republic Central Laser Facility STFC Rutherford Appleton LaboratoryDidcotUK

We report on frequency doubling of high-energy,high repetition rate ns pulses from a cryogenically gas cooled multi-slab ytterbium-doped yttrium aluminum garnet laser system,Bivoj/DiPOLE,using a type-I phase matched lithium triborate *** achieved conversion to 515 nm with energy of 95 J at repetition rate of 10 Hz and conversion efficiency of 79%.High conversion efficiency was achieved due to successful depolarization compensation of the fundamental input beam.

关键词： diode pumped solid state laser frequency conversion high energy high average power

Design of kJ-class HiLASE laser as a driver for inertial fusion energy——CORRIGENDUM

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High Power Laser Science and Engineering 2014年第3期2卷 102-102页

作者： Antonio Lucianetti Magdalena Sawicka Ondrej Slezak Martin Divoky jan pilar Venkatesan Jambunathan Stefano Bonora Roman Antipenkov Tomas Mocek

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关键词： ASE birefringence cryogenic cooling slab lasers thermooptic effects