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16 April 2018 Investigation of compression conditions of subnanosecond pulse in the visible spectral range
M. V. Ivanov, N. G Ivanov, V. F. Losev
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Proceedings Volume 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII; 1061428 (2018) https://doi.org/10.1117/12.2301003
Event: XIII International Conference on Atomic and Molecular Pulsed Lasers, 2017, Tomsk, Russia
Abstract
One way to obtain a multi-terawatt laser beams in the visible spectrum rang is direct amplification of the pulse in the output amplifier. Such method is being developed in IHCE SB RAS based on THL-100 hybrid laser system. This system uses solid-state and gas active media, namely: Ti:Sa femtosecond front-end and photodissociative XeF(C-A) amplifier. The front-end generates a transform-limited radiation pulse of 50 fs duration or a positive-chirped 50 ps pulse (FWHM) on second harmonic (475 nm). The XeF(C-A) amplifier can amplify the energy of front-end pulse up to 2-3 J. A compressor is required to recompress the amplified 50 ps radiation pulse to the transform-limited pulse duration. In this paper, we present the calculated parameters of the compressor based on the diffraction gratings and experimental data of the output radiation pulse compression of the front-end. The compressor optics scheme, its parameters and adjustment technique are presented. The compressing possibility of 50 ps second harmonic pulse to a duration of 75 fs in the grating compressor at a pulse energy of 7 mJ and a 1 cm beam diameter are demonstrated.
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M. V. Ivanov, N. G Ivanov, and V. F. Losev "Investigation of compression conditions of subnanosecond pulse in the visible spectral range", Proc. SPIE 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII, 1061428 (16 April 2018); https://doi.org/10.1117/12.2301003
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KEYWORDS
Diffraction gratings
Optical amplifiers
Femtosecond phenomena
Picosecond phenomena
Visible radiation
Laser systems engineering
Pulsed laser operation
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