Technology development for ultra-intense OPCPA systems (Conference Presentation)

Bromage, J.; Bahk, S.-W.; Begishev, I. A.; Dorrer, C.; Guardalben, M. J.; Hoffman, Brittany N.; Oliver, J. B.; Roides, R. G.; Schiesser, Eric M.; Shoup, M. J.; Spilatro, M.; Webb, Benjamin; Weiner, D.; Zuegel, J. D.

doi:10.1117/12.2523154

Cited by 3 publications

(4 citation statements)

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“…Although the design of the NOPA4 stages has not changed since it was described in detail in Ref. [21], some components have been modified and the operating points changed, primarily to reduce the incidence of optical damage. For example, we exchanged the BBO crystals for ones with higher surface quality [24] to overcome optical degradation after prolonged use.…”

Section: Nopa4 Amplifier Stagesmentioning

confidence: 99%

MTW-OPAL: a technology development platform for ultra-intense optical parametric chirped-pulse amplification systems

Bromage

Bahk

Bedzyk

et al. 2021

High Pow Laser Sci Eng

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Optical parametric chirped-pulse amplification implemented using multikilojoule Nd:glass pump lasers is a promising approach for producing ultra-intense pulses (>10 23 W/cm 2 ). We report on the MTW-OPAL Laser System, an optical parametric amplifier line (OPAL) pumped by the Nd:doped portion of the Multi-Terawatt (MTW) laser. This midscale prototype was designed to produce 0.5-PW pulses with technologies scalable to tens of PW's. Technology choices made for MTW-OPAL were guided by the longer-term goal of two full-scale OPAL's pumped by the OMEGA EP laser to produce 2  25-PW beams that would be co-located with kilojoulenanosecond UV beams. Several MTW-OPAL campaigns that have been completed since "first light" in March 2020 show that laser design is fundamentally sound, and optimization continues as we prepare for "first focus" campaigns later this year.

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Section: Nopa4 Amplifier Stagesmentioning

confidence: 99%

MTW-OPAL: a technology development platform for ultra-intense optical parametric chirped-pulse amplification systems

Bromage

Bahk

Bedzyk

et al. 2021

High Pow Laser Sci Eng

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“…Currently, power up to 10 petawatt (PW) [3,4] as well as the focused intensity of 10 23 W /cm 2 has been reported [5] . Optical parametric chirped pulse amplification (OPCPA) has been widely adopted in laser facilities including those installed and proposed [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] . The capacity of optical parametric amplifiers as the front-end of those laser facilities, like gain bandwidth, conversion efficiency, acceptance angle, walk-off effect, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Thirdly, owing to the remarkable thermal properties, such as large temperature acceptance, high thermal conductivity and low coefficient of thermal expansion, YCOB takes potential quality for high average repetition rate laser systems [29] . At present, crystals adopted in optical parametric amplifiers for petawatt-scale delivery capacity are restrained to LBO and DKDP [9,10,11,16,30] . In this paper, we presented an YCOB-based parametric amplifier based on https://doi.org/10.1017/hpl.2023.7 Published online by Cambridge University Press Accepted Manuscript SG-Ⅱ 5PW laser facility and for the first time realized compressed pulses exceeding 1 PW peak power with YCOB crystal.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a petawatt-scale optical parametric chirped pulse amplifier based on yttrium calcium oxyborate

Sun

Kang

Liang

et al. 2023

High Pow Laser Sci Eng

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As optical parametric chirped pulse amplification (OPCPA) has been widely adopted for the generation of extreme intensity laser sources, nonlinear crystals of large aperture are demanded for high energy amplifiers. Yttrium calcium oxyborate (YCa 4 O(BO 3 ) 3 , YCOB) is capable to be grown with aperture exceeding hundred millimeters, which makes it possible for application in systems of petawatt scale. In this paper, we experimentally demonstrated for the first time to our knowledge, an ultrabroadband non-collinear optical parametric amplifier with YCOB for petawatt scale compressed pulse generation at 800 nm. Based on SG-Ⅱ 5PW facility, amplified signal energy of ~40 J was achieved and pump-to-signal conversion efficiency was up to 42.3%.A gain bandwidth of 87 nm was realized and supported compressed pulse duration of 22.3

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“…In the presence of an electric field of the order of F cr the vacuum becomes unstable under electron-positron pair production and the interaction energy of a Bohr magneton with a magnetic field of strength F cr is of the order of m. The field strength F cr corresponds to a critical laser intensity I cr ∼ 10 29 W/cm 2 , which is far from being reached by available lasers. Indeed, today's record for the laser peak intensity I 0 is of about 1.1 × 10 23 W/cm 2 [4], and even upcoming laser facilities are aiming for intensities of the order of I 0 ∼ 10 23 −10 24 W/cm 2 [5][6][7][8][9]. However, due to the Lorentz-invariance of QED, physical observables like transition probabilities depend on the electromagnetic field only via Lorentz-and gauge-invariant parameters, such that the interesting regime where field-induced quantum effects dominate the dynamics can be efficiently entered experimentally already with today's technology.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Compton scattering and nonlinear Breit-Wheeler pair production including the damping of particle states

Podszus,

Dinu,

Di Piazza

2022

Preprint

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In the presence of an electromagnetic background plane-wave field, electron, positron, and photon states are not stable, because electrons and positrons emit photons and photons decay into electronpositron pairs. This decay of the particle states leads to an exponential damping term in the probabilities of single nonlinear Compton scattering and nonlinear Breit-Wheeler pair production.In this paper we investigate analytically and numerically the probabilities of nonlinear Compton scattering and nonlinear Breit-Wheeler pair production including the particle states' decay. For this we first compute spin-and polarization-resolved expressions of the probabilities, provide some of their asymptotic behaviors and show that the results of the total probabilities are independent of the spin and polarization bases. Then, we present several plots of the total and differential probabilities for different pulse lengths and for different spin and polarization quantum numbers. We observe that it is crucial to take into account the damping of the states in order for the probabilities to stay always below unity and we show that the damping factors also scale with the intensity and pulse duration of the background field. In the case of nonlinear Compton scattering we show numerically that the total probability behaves like a Poissonian distribution for sufficiently low initial electron energies such that the photon recoil is negligible. In all considered cases, the kinematic conditions are such that the final particles momenta transverse to the propagation direction of the plane wave are always much smaller than the particles energies and the main spread of the momentum distribution on the transverse plane is along the direction of the plane-wave electric field.

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Technology development for ultra-intense OPCPA systems (Conference Presentation)

Cited by 3 publications

References 0 publications

MTW-OPAL: a technology development platform for ultra-intense optical parametric chirped-pulse amplification systems

MTW-OPAL: a technology development platform for ultra-intense optical parametric chirped-pulse amplification systems

Demonstration of a petawatt-scale optical parametric chirped pulse amplifier based on yttrium calcium oxyborate

Nonlinear Compton scattering and nonlinear Breit-Wheeler pair production including the damping of particle states

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