Spatial asymmetry of optical parametric fluorescence with a divergent pump beam and potential applications

Li, Zhaoyang; Tsubakimoto, Koji; Yoshida, Hidetsugu; Uesu, Toshikazu; Tsuji, K.; Miyanaga, Noriaki

doi:10.1364/oe.25.007465

Cited by 5 publications

(5 citation statements)

References 25 publications

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“…The gain bandwidth broadening in the optical parametric process with a divergent or convergent pump/signal beam has been demonstrated, [138][139][140][141][142] and the mechanism is the same as the multiple-beam pumped OPCPA. In a recent study, as shown in Figure 11a, we shaped the pump from a collimated single [145] Copyright 2021, Springer Nature.…”

Section: Wide-angle Noncollinear Opcpa (Wnopcpa)mentioning

confidence: 92%

“…The gain bandwidth broadening in the optical parametric process with a divergent or convergent pump/signal beam has been demonstrated, [ 138–142 ] and the mechanism is the same as the multiple‐beam pumped OPCPA. In a recent study, as shown in Figure a, we shaped the pump from a collimated single beam into multiple collimated and spatially overlapped beamlets but having individual propagating directions by a “beam homogenizer,” [ 143 ] which consisted of a lens array and a Fourier lens, resulting in several phase‐matching conditions satisfied in a single amplifier.…”

Section: Ultrabroadband Pulse Amplificationmentioning

confidence: 99%

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Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

Leng

2022

Laser & Photonics Reviews

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The petawatt (PW) laser has experienced a rapid development in the past two decades, and tens of giant facilities have been constructed worldwide. After realizing 10–100 PW, it seems to be close to some sort of engineering limit but its focused peak intensity still is much lower than the Schwinger limit, and therefore some technology improvements or innovations become indispensable for further increasing the peak power as well as the focused peak intensity. By quick reviewing the development of the PW laser in history, it is shown that reducing the pulse duration to near a single optical cycle is a feasible (easy and cheap) choice for this purpose. Here, technologies for the optical‐cycle pulse generation, ultrabroadband amplification, and capability boosting that aim to provide possible approaches for optical‐cycle PW lasers are briefly reviewed and discussed. Meanwhile, key bottlenecks that challenge the current as well as the future short‐pulse PW lasers and their possible solutions are summarized and discussed. This technology review aims to provide a possible roadmap for the next‐stage development of the short‐pulse PW laser.

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Section: Wide-angle Noncollinear Opcpa (Wnopcpa)mentioning

confidence: 92%

Section: Ultrabroadband Pulse Amplificationmentioning

confidence: 99%

Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

Leng

2022

Laser & Photonics Reviews

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“…The optimization of the phase-matching is given in Supplementary material. Here, we choose the phase-matching direction with a smaller signal propagation angle (compared with those of two pumps), because the angle-gap between two pump-beamlets is enlarged 54,55 . These parameters together with other parameters are summarized in Table 2.…”

Section: Resultsmentioning

confidence: 99%

Simulating an ultra-broadband concept for Exawatt-class lasers

Kato

Kawanaka

2021

Sci Rep

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The rapid development of the optical-cycle-level ultra-fast laser technologies may break through the bottleneck of the traditional ultra-intense laser [i.e., Petawatt (PW, 1015 W) laser currently] and enable the generation of even higher peak-power/intensity lasers. Herein, we simulate an ultra-broadband concept for the realization of an Exawatt-class (EW, 1018 W) high peak-power laser, where the wide-angle non-collinear optical parametric chirped-pulse amplification (WNOPCPA) is combined with the thin-plate post-compression. A frequency-chirped carrier-envelope-phase stable super-continuum laser is amplified to high-energy in WNOPCPA by pumping with two pump-beamlets and injected into the thin-plate post-compression to generate a sub-optical-cycle high-energy laser pulse. The numerical simulation shows this hybrid concept significantly enhances the gain bandwidth in the high-energy amplifier and the spectral broadening in the post-compression. By using this concept, a study of a prototype design of a 0.5 EW system is presented, and several key challenges are also examined.

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“…It can be understood as the spontaneous splitting of pump photons to signal and idler photons and then being amplified along the nonlinear crystal together with seed pulses. As one main type of noise in OPCPA, PSF delivered to the target before the arrival of the main pulse may radically change the conditions of the interactions, so it has gained much attention in past decades [23][24][25][26][27][28].…”

Section: Methodsmentioning

confidence: 99%

Numerical Investigation of the Temporal Contrast in ps-OPCPA with Compact Double BBO Arrangement

Chen

Wang

et al. 2022

Applied Sciences

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The picosecond optical parametric chirped pulse amplifier (ps-OPCPA) with double BBO arrangement can support the ultrabroad spectrum even under a relatively long pump pulse duration (∼100 ps). In this work, five-wave-coupled equations taking into consideration different phase matching conditions between the parametric superfluorescence (PSF) and the signal are proposed to investigate the temporal contrast in ps-OPCPA schemes. Both the temporal contrast and the amplified spectrum are numerically analyzed in double BBO arrangements with four phase matching conditions. Numerical results show that the high temporal contrast and ultrabroad spectrum can be simultaneously realized by choosing the proper phase matching geometry in a double BBO arrangement. The numerical investigation here relaxes the requirement of very short pump pulses in ps-OPCPA, which can provide beneficial guidance for the design and construction of ps-OPCPA.

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Spatial asymmetry of optical parametric fluorescence with a divergent pump beam and potential applications

Cited by 5 publications

References 25 publications

Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

Further Development of the Short‐Pulse Petawatt Laser: Trends, Technologies, and Bottlenecks

Simulating an ultra-broadband concept for Exawatt-class lasers

Numerical Investigation of the Temporal Contrast in ps-OPCPA with Compact Double BBO Arrangement

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