Modeling of amplified spontaneous emission, heat deposition, and energy extraction in cryogenically cooled multislab Yb^3+:YAG laser amplifier for the HiLASE Project

Sawicka, Magdalena; Divoký, Martin; Novák, Jakub; Lucianetti, Antonio; Rus, B.; Mocek, Tomáš

doi:10.1364/josab.29.001270

Cited by 49 publications

(30 citation statements)

References 18 publications

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“…The important parameters to be estimated are: maximum required DM deformation (stroke), spatial frequency and temporal evolution of the aberrations. The aberrations can be calculated with simulations [3][4][5] using numerical models or estimated by previous experiments on similar systems [6,7] .…”

Section: Design Parametersmentioning

confidence: 99%

“…For example, in the case of the HiLASE laser [8] four numerical models have been developed in order to estimate the thermal effects within the gain media, optical aberrations introduced by the main multi-slab amplifier (see Figure 1) and the wavefront correction. The first model simulates the effect of amplified spontaneous emission (ASE) in the 1 2 S. Bonora et al gain media [7] ; the second computes the temperature distribution, thermal stresses and estimates the induced optical aberrations [3] (see Figure 1(b) for sample result).…”

Section: Thermo-optical Simulationsmentioning

confidence: 99%

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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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Section: Design Parametersmentioning

confidence: 99%

Section: Thermo-optical 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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“…The energetics modeling of the amplifiers is provided by our in-house-developed numerical code [20]. The code works in discrete time steps.…”

Section: Numerical Modelling Of Laser Amplifiersmentioning

confidence: 99%

“…First, the amplifier head was studied and crucial parameters were estimated by two numerical models, including the aberration induced by thermal loading of the gain media [20,21]. In order to estimate the aberration of the output laser beam, another main source of aberrations was estimated by a different numerical model.…”

Section: Wavefront Correction By a Deformable Mirrormentioning

confidence: 99%

“…Higher pulse energies (>1 J) at lower repetition rates (10 Hz, 100 Hz) have been achieved by using conventional designs [12], thick disks [13][14][15][16], total reflection active mirrors (TRAM) [17] or multi-slabs [18,19]. Some of them employ operation at cryogenic temperatures using the advantages of higher thermal conductivity and higher gain at low temperatures [20,21].…”

Section: Introductionmentioning

confidence: 99%

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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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