200 Terawatt femtosecond laser based on optical parametric amplification in DKDP crystal

Lozhkarev, V. V.; Гинзбург, В. Н.; Freǐdman, G. I.; Katin, E. V.; Хазанов, Е. А.; Kirsanov, A. V.; Luchinin, G. A.; Mal’shakov, A.N.; Martyanov, M.; Palashov, O.; Poteomkin, A.; Сергеев, А. М.; Shaykin, A. A.; Yakovlev, I. V.

doi:10.1117/12.644554

Cited by 3 publications

(6 citation statements)

References 18 publications

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“…In Ref. [10], the dependence of the refractive index of this crystal on the wave frequency (the Sellmeier formula) was determined for an arbitrary degree of deuteration and it was found that, when pumped by the second harmonic of a neodymium laser at the central wavelength of an amplified pulse of 910 nm, ultra-wideband phase matching exists. Further studies [30,[52][53][54][55][56] confirmed these results and showed the prospectivity of using a DKDP crystal for broadband OPCPA.…”

Section: The Intermediate Opcpamentioning

confidence: 99%

“…Our long-term experience of working with OPCPA [10,[13][14][15] showed that the efficiency of a parametric amplifier (the amplified pulse energy normalized to the pump pulse energy) in the experiment turns out to be 15%-25% lower than the theoretical one. This may be due to pump beam inhomogeneity, synchronization or alignment inaccuracy, poor antireflection, etc.…”

Section: The Intermediate Opcpamentioning

confidence: 99%

“…In particular, ultra-wideband phase matching does not exist in the KDP crystal isomorphic to it. In the 2000s, this property of DKDP crystals was verified experimentally [12] , and the output power of lasers based on optical parametric chirped pulse amplification in a DKDP crystal reached 0.44 TW [10] , 100 TW [13] , 0.56 PW [14] and 1 PW [15] .…”

Section: Introductionmentioning

confidence: 99%

“…The XCELS project rests on three 'whales': optical parametric chirped pulse amplification [8] instead of traditional laser chirped pulse amplification (CPA) [9] ; ultra-wideband phase matching of parametric amplification around the 910 Correspondence to: Efim Khazanov, Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, Nizhny Novgorod 603950, Russia. Email: efimkhazanov@gmail.com nm wavelength discovered [10] in DKDP (KD 2 PO 4 , deuterated potassium dihydrogen phosphate) crystals; and the use of a wide-aperture neodymium glass slab laser with multikilojoule pulse energy [11] for pumping the parametric amplifier. Ultra-wideband phase matching exists in many crystals and is widely used in optical parametric chirped pulse amplification based femtosecond lasers.…”

Section: Introductionmentioning

confidence: 99%

“…However, the DKDP crystal is practically the only one that can be grown with an aperture of tens of centimeters and acceptable optical quality, which is necessary to achieve multipetawatt power. It was shown [10] that, upon pumping by the second harmonic of a neodymium laser, the first three terms in the Taylor expansion of the wavevector mismatch vanish if the carrier wavelength of the amplified pulse is 910 nm. This is a unique property of the DKDP crystal.…”

Section: Introductionmentioning

confidence: 99%

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eXawatt Center for Extreme Light Studies

Khazanov,

Shaykin,

Kostyukov

et al. 2023

High Pow Laser Sci Eng

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The eXawatt Center for Extreme Light Studies project aimed to create a large scientific infrastructure based on lasers with giant peak power. The project relies on the significant progress achieved in the last decade. The planned infrastructure will incorporate a unique light source with a pulse power of 600 PW using optical parametric chirped pulse amplification in large-aperture KD 2 PO 4 , deuterated potassium dihydrogen phosphate crystals. The interaction of such laser radiation with matter represents a completely new fundamental physics. The direct study of the space-time structure of vacuums and other unknown phenomena at the frontier of high-energy physics and the physics of superstrong fields will be challenged. Expected applications will include the development of compact particle accelerators, the generation of ultrashort pulses of hard X-ray and gamma radiation for material science enabling one to probe material samples with unprecedented spatial and temporal resolution, the development of new radiation and particle sources, etc. The paper is translation from Russian [Kvantovaya Elektronika 53, 95 (2023)].

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Section: The Intermediate Opcpamentioning

confidence: 99%

Section: The Intermediate Opcpamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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eXawatt Center for Extreme Light Studies

Khazanov,

Shaykin,

Kostyukov

et al. 2023

High Pow Laser Sci Eng

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<title>Stretcher-compressor design for OPCPA system with chirp reversal</title>

Yakovlev¹,

Freǐdman²,

Katin³

et al. 2007

SPIE Proceedings

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A prismlgrating aberration-free stretcher for OPCPA system with chirp reversal is presented. A designed stretcher with a conventional grating compressor allows to accurately compensate the residual dispersion of the system up to the 4-th order inclusive. The peak power of200 TW in the 45-fs pulse at the output ofthe OPCPA laser was achieved. ThTRODUCTIONThe fruitful idea of chirped-pulse amplification (CPA) [1] is used practically in all extra-high-power laser systems generating super-short pulses terawatt, multi-terawatt, sub-petawatt and petawatt level of peak power. The principle scheme of CPA is presented in Fig. 1. Seed pulse of low-power radiation from femtosecond master oscillator is chirped in a stretcher. Here its duration increases up to hundreds of picoseconds that allows to amplify energy of a pulse up to tens and even hundreds of joules without undesirable effects of self-focusing and optical breakdown. Then this amplified pulse is compressed up to initial duration and, thus, gets huge values of peak power.By present time the peak power petawatt level has been reached only on four laser systems [2][3][4][5];however all over the world there is a number of projects aimed to the creation of petawatt laser systems. In operating and in projected systems, Nd:glass or Ti:Sapphire are used or planned to be used as the amplifying medium of final stages. Fig. 1. The principle scheme of CPA method.In the mid-90-s for receiving of super-power laser radiation it was offered to use optical parametric chirpedpulse amplification (OPCPA) [6,7]. The basic OPCPA scheme is very similar to CPA one (see Fig.1), only here parametric amplification in nonlinear crystals is used instead of laser amplification in active elements. However, for an achievement of petawatt power, nonlinear crystals with the big aperture are required. In this connection, in developed super-power OPCPA-systems KDP crystals which aperture can reach 20-30 centimeters are considered as amplifying elements.Nonlinear crystals stable to laser radiation possessing a large value of nonlinear coefficients (first of all BBO and LBO) are used in the first stages of hybrid type systems [8] including both parametric and laser amplifiers. In some of them the conversion of signal wave to the conjugated (idler) one is used and then, in the subsequent stage, return conversion to initial wavelength of signal radiation is carried out. Such "maneuver" allows to raise essentially contrast of intensity of output recompressed pulse.It is important to note, that in all listed CPA, OPCPA and hybrid systems (we shall name them traditional CPA systems) the wavelength of stretched and recompressed radiation is the same (see Fig. 1) and corresponds to the wavelength of a femtosecond master oscillator. Thus, conditions of the phase matching of a stretcher, an amplifier and a A A

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Numerical analysis of the DKDP-based high-energy optical parametric chirped pulse amplifier for a 100 PW class laser

Wang

et al. 2021

Appl. Opt.

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An optical parametric chirped pulse amplifier (OPCPA) based on a large-aperture DKDP crystal and pumped by a 10 kJ level Nd:glass laser can serve as the final amplifier for a 100 PW level laser. A comprehensive numerical investigation on such a high-energy OPCPA is presented in this work. The effects on the efficiency–bandwidth product induced by the deuteration level, absorption loss, temperature variation, and optimization of zero-phase-mismatch wavelength (ZPMW) are analyzed in detail. Based on the analysis above, a three-dimensional numerical simulation taking into account the effects of pumping depletion, diffraction, and walk-off shows that, by optimization of ZPMW, broadband (over 210 nm spectral width in FWHM) and high efficiency ( > 37 % ) amplification can be realized in the DKDP crystal even with a moderate deuteration level of 70%, which can relax the requirement of a high deuteration level in a large-aperture DKDP crystal. The numerical analysis can provide meaningful guidance for the design and construction of 100 PW class laser systems.

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200 Terawatt femtosecond laser based on optical parametric amplification in DKDP crystal

Cited by 3 publications

References 18 publications

eXawatt Center for Extreme Light Studies

eXawatt Center for Extreme Light Studies

<title>Stretcher-compressor design for OPCPA system with chirp reversal</title>

Numerical analysis of the DKDP-based high-energy optical parametric chirped pulse amplifier for a 100 PW class laser

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