Overview of the HiLASE project: high average power pulsed DPSSL systems for research and industry

Divoký, Martin; Smrž, Martin; Chyla, Michal; Sikocinski, Pawel; Severová, Patricie; Novák, Ondřej; Huynh, Jaroslav; Nagisetty, Siva Sankar; Miura, Taisuke; Pilař, Jan; Slezák, Ondřej; Sawicka, Magdalena; Jambunathan, Venkatesan; Vanda, Jan; Endo, Akira; Lucianetti, Antonio; Rostohar, Danijela; Mason, Paul; Phillips, Jonathan; Ertel, Klaus; Banerjee, Saumyabrata; Hernandez‐Gomez, C.; Collier, J.; Mocek, Tomáš

doi:10.1017/hpl.2014.16

Cited by 49 publications

(29 citation statements)

References 25 publications

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“…This laser also employs the technique of imaging and vacuum spatial filtering to manage nonlinear effects and produce clean beam profiles, techniques that were pioneered is the earliest high-peak-power laser systems developed in connection with inertial confinement fusion [37]. We also mention the work of HiLASE [171,172], where large aperture high energy/pulse Yb:YAG cryogenically He gas cooled lasers are being developed. In [152] a 10 J/pulse, 10 Hz cryogenic amplifier is already developed, and a 100 J/pulse cryogenic amplifier is expected to be demonstrated in 2015, while in [173] Figure 48 shows the peak power obtained as a function of average power, again using data from Table 10.…”

Section: Cryogenic Ultrafast (Picosecond and Femtosecond) Lasersmentioning

confidence: 99%

The Application of Cryogenic Laser Physics to the Development of High Average Power Ultra-Short Pulse Lasers

Brown¹,

Tornegård²,

Kolis

et al. 2016

Applied Sciences

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Ultrafast laser physics continues to advance at a rapid pace, driven primarily by the development of more powerful and sophisticated diode-pumping sources, the development of new laser materials, and new laser and amplification approaches such as optical parametric chirped-pulse amplification. The rapid development of high average power cryogenic laser sources seems likely to play a crucial role in realizing the long-sought goal of powerful ultrafast sources that offer concomitant high peak and average powers. In this paper, we review the optical, thermal, thermo-optic and laser parameters important to cryogenic laser technology, recently achieved laser and laser materials progress, the progression of cryogenic laser technology, discuss the importance of cryogenic laser technology in ultrafast laser science, and what advances are likely to be achieved in the near-future.

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Section: Cryogenic Ultrafast (Picosecond and Femtosecond) Lasersmentioning

confidence: 99%

The Application of Cryogenic Laser Physics to the Development of High Average Power Ultra-Short Pulse Lasers

Brown¹,

Tornegård²,

Kolis

et al. 2016

Applied Sciences

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“…Among the main amplifier systems, most of these mediumscale lasers use Nd:glass rod amplification cascade [25][26][27][28]33] and a few of them use a combination of rod and disk amplifiers [23,32] or pure multi-slab amplifiers [34][35][36] . In our opinion, rod active elements also have good prospects.…”

Section: S LI Et Almentioning

confidence: 99%

Hundred-Joule-level, nanosecond-pulse Nd:glass laser system with high spatiotemporal beam quality

Wang

Lü

et al. 2016

High Pow Laser Sci Eng

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A 100-J-level Nd:glass laser system in nanosecond-scale pulse width has been constructed to perform as a standard source of high-fluence-laser science experiments. The laser system, operating with typical pulse durations of 3-5 ns and beam diameter 60 mm, employs a sequence of successive rod amplifiers to achieve 100-J-level energy at 1053 nm at 3 ns. The frequency conversion can provide energy of 50-J level at 351 nm. In addition to the high stability of the energy output, the most valuable of the laser system is the high spatiotemporal beam quality of the output, which contains the uniform square pulse waveform, the uniform flat-top spatial fluence distribution and the uniform flat-top wavefront.

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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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Overview of the HiLASE project: high average power pulsed DPSSL systems for research and industry

Cited by 49 publications

References 25 publications

The Application of Cryogenic Laser Physics to the Development of High Average Power Ultra-Short Pulse Lasers

The Application of Cryogenic Laser Physics to the Development of High Average Power Ultra-Short Pulse Lasers

Hundred-Joule-level, nanosecond-pulse Nd:glass laser system with high spatiotemporal beam quality

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

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