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

Lucianetti, Antonio; Sawicka, Magdalena; Slezák, Ondřej; Divoký, Martin; Pilař, Jan; Jambunathan, Venkatesan; Bonora, Stefano; Antipenkov, Roman; Mocek, Tomáš

doi:10.1017/hpl.2014.15

Cited by 18 publications

(12 citation statements)

References 19 publications

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“…The main drawback of such co-doped materials is strong absorption of Cr 4+ at 940 nm, the pump wavelength for Yb:YAG and affects the performance of laser. Magdalena et al have studied numerically the role of Cr 4+ :YAG cladding layer on ASE around Yb:YAG ceramic slab [58,59] . It has been found that ASE leads to a decrease in population inversion (N 2 ) in the center part of the rectangular ceramic slabs.…”

Section: High Energy Solid-state Lasersmentioning

confidence: 99%

Overview of ytterbium based transparent ceramics for diode pumped high energy solid-state lasers

David

Jambunathan

Lucianetti

et al. 2018

High Pow Laser Sci Eng

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Development of high energy laser sources with nanosecond pulses at several hertz values for repetition rate has been very attractive in recent years due to their great potential for practical applications. With the recent advancement in fabricating large size laser quality transparent ceramics, diode pumped solid-state laser generating pulse energy of 100 J at 10 Hz has been recently realized at HiLASE center using Yb:YAG ceramic with Cr:YAG cladding. This review discusses Yb based high energy lasers, specific laser geometries for efficient thermal management and the role of transparent ceramics in such diode pumped high-energy-class solid-state lasers around the world.

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Section: High Energy Solid-state Lasersmentioning

confidence: 99%

Overview of ytterbium based transparent ceramics for diode pumped high energy solid-state lasers

David

Jambunathan

Lucianetti

et al. 2018

High Pow Laser Sci Eng

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“…Figure 2(a) shows an example of DM pattern layout for a square laser beam with 36 actuators [15] . The design has to find out the ideal ratio between the area outside the active region ‘SA’ and the active region ‘AR’ with the aim to find the minimum value of SA that gives the desired level of correction.…”

Section: Working Principle and Simulationsmentioning

confidence: 99%

Design of deformable mirrors for high power lasers

Bonora

Pilař

Lucianetti

et al. 2016

High Pow Laser Sci Eng

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We present the workflow of the design, realization and testing of deformable mirrors suitable for high power diode pumped solid-state lasers. It starts with the study of the aberration to be corrected, and then it continues with the design of the actuators position and characteristic. In this paper, we present and compare three deformable mirrors realized for multi-J level laser facilities. We show that with the same design concept it is possible to realize deformable mirrors for other types of lasers. As an example, we report the realization of a deformable mirror for femtosecond lasers and for a CW CO 2 laser.

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“…The base calculation of the temperature and stress distribution is done by the three-dimensional finite-element method using COMSOL Multiphysics software. The lateral surfaces of the amplifiers can be considered to be cooled by direct thermal contacts with the heat sink or by forced or natural convection cooling by liquid or gas [21,[58][59][60]. The non-isothermal flow of the cooling medium is calculated separately in a 3D or simplified 2D, depending on the geometry, model resulting in the spatially-resolved heat transfer coefficient, which is then used as a boundary condition for fully 3D thermal stress-strain calculation.…”

Section: Numerical Modelling Of Laser Amplifiersmentioning

confidence: 99%

Status of the High Average Power Diode-Pumped Solid State Laser Development at HiLASE

et al. 2015

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An overview of the latest developments of kilowatt-level diode pumped solid state lasers for advanced applications at the HiLASE Centre is presented. An overview of subcontracted and in-house-developed laser beamlines is presented. The aim of development is to build kW-class beamlines delivering picosecond pulses between 1-and 100-kHz repetition rates and high-energy nanosecond pulses at 10 Hz. The picosecond beamlines are based on Yb:YAG thin-disk amplifiers and chirped pulse amplification. The current status of the beamlines' performance is reported. The advantages of zero-phonon line and pulsed OPEN ACCESS Appl. Sci. 2015, 5638 pumping are demonstrated with respect to efficiency, thin disk temperature and beam quality. New diagnostics methods supporting the high average power lasers' development, such as the high-resolution spectroscopy of Yb-doped materials, in situ thin disk deformation measurements, single-shot M 2 measurement, realization of wavefront correction by a deformable mirror and the laser performance of a new mixed garnet ceramics, are described. The energetic, thermal and fluid-mechanical numerical modeling for the optimization of the multi-slab amplifiers is also described.

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

Cited by 18 publications

References 19 publications

Overview of ytterbium based transparent ceramics for diode pumped high energy solid-state lasers

Overview of ytterbium based transparent ceramics for diode pumped high energy solid-state lasers

Design of deformable mirrors for high power lasers

Status of the High Average Power Diode-Pumped Solid State Laser Development at HiLASE

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