High-contrast front end based on cascaded XPWG and femtosecond OPA for 10-PW-level Ti:sapphire laser

Yu, Linpeng; Xu, Yi; Liu, Yanqi; Li, Yanyan; Li, Shuai; Liu, Zhengzheng; Li, Wenkai; Wu, Fenxiang; Yang, Xiaojun; Yang, Yanqun; Wang, Cheng; Lu, Xiaoming; Leng, Yuxin; Li, Ruxin; Xu, Zhizhan

doi:10.1364/oe.26.002625

Cited by 55 publications

(24 citation statements)

References 36 publications

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“…The yield, energy conversion efficiency, and cutoff energy of the positrons obtained increase with the incident laser intensity, which can be further enhanced by using a long plasma channel. With the upcoming next-generation laser facilities (e.g., ELI [14], XCELS [15], Apollon [16], and SULF [17]), such collimated 9 / 11 dense GeV positron jets and bright γ-ray flashes both with desirable atto-beam capability may open new avenues for ultrafast studies in physics, chemistry, biology, etc.…”

Section: Discussionmentioning

confidence: 99%

Collimated GeV attosecond electron–positron bunches from a plasma channel driven by 10 PW lasers

Zhu

Chen

et al. 2019

Matter and Radiation at Extremes

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High-energy positrons and bright γ-ray sources are unique both for fundamental research and practical applications. However, GeV electron-positron pair jets and γ-ray flashes are still hardly produced in laboratories. Here we demonstrate that, by irradiating two 10 PW-scale laser pulses onto a near-critical density plasma channel, highly-directional GeV electron-positron pairs and bright γ-ray beams can be efficiently generated. Three-dimensional particle-in-cell simulations show that GeV positron jets show high density ( × / ), attosecond duration (400 as) and a divergence angle of 14°. Additionally, ultrabright ( × photons/s/mm 2 /mrad 2 /0.1%BW) collimated attosecond (370 as) γ-ray flashes with a laser energy conversion efficiency of 5.6% are emitted. Once realized in experiment, it may open up new possibilities for a wide variety of applications. 2 / 11

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Section: Discussionmentioning

confidence: 99%

Collimated GeV attosecond electron–positron bunches from a plasma channel driven by 10 PW lasers

Zhu

Chen

et al. 2019

Matter and Radiation at Extremes

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“…This novel temporal filter mainly includes three parts: (1) a stage of XPWG, which can generate high-contrast and broadband seed pulses with several microjoule energy; (2) a stage of second harmonic generation (SHG) pump laser, which can provide pump laser with ∼400 nm central wavelength and ∼1.75 mJ energy for femtosecond OPA; (3) a stage of femtosecond OPA, which can generate ultrahigh-contrast signal pulses and idler pulses with 100-µJ-level energy simultaneously. A detailed design of the nonlinear temporal filter is described in our previous work [19] .…”

Section: Laser Designs Of the Sulf-1 Pw Beamlinementioning

confidence: 99%

The laser beamline in SULF facility

Zhang

et al. 2020

High Pow Laser Sci Eng

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In this paper, we report the recent progress on the $1~\text{PW}/0.1~\text{Hz}$ laser beamline of Shanghai Superintense Ultrafast Laser Facility (SULF). The SULF-1 PW laser beamline is based on the double chirped pulse amplification (CPA) scheme, which can generate laser pulses of 50.8 J at 0.1 Hz after the final amplifier; the shot-to-shot energy fluctuation of the amplified pulse is as low as 1.2% (std). After compression, the pulse duration of 29.6 fs is achieved, which can support a maximal peak power of 1 PW. The contrast ratio at $-80~\text{ps}$ before main pulse is measured to be $2.5\times 10^{-11}$ . The focused peak intensity is improved by optimizing the angular dispersion in the grating compressor. The maximal focused peak intensity can reach $2.7\times 10^{19}~\text{W}/\text{cm}^{2}$ even with an $f/26.5$ off-axis parabolic mirror. The horizontal and vertical angular pointing fluctuations in 1 h are measured to be 1.89 and $2.45~\unicode[STIX]{x03BC}\text{rad}$ , respectively. The moderate repetition rate and the good stability are desirable characteristics for laser–matter interactions. The SULF-1 PW laser beamline is now in the phase of commissioning, and preliminary experiments of particle acceleration and secondary radiation under 300–400 TW/0.1 Hz laser condition have been implemented. The progress on the experiments and the daily stable operation of the laser demonstrate the availability of the SULF-1 PW beamline.

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“…Since the year of 2014, the 1053-nm version has been operating on the SG-II Nd:glass petawatt laser at Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS) [35] . Four other sets of the 800-nm version have been applied successively on the 1-PW Ti:sapphire laser at SIOM of CAS, the 1-PW Ti:sapphire laser at Institute of Physics (IOP) of CAS, the 5-PW OPCPA laser at Laser Fusion Research Center (LFRC) of China Academy of Engineering Physics (CAEP) [36] and the 5-PW Ti:sapphire laser at Shanghai Superintense Ultrafast Laser Facility (SULF) of CAS [37] . All these laser facilities operate in a single-shot mode, which are appropriate sources for testing the performance of the SSCCs.…”

Section: In Situ Applications On Petawatt Laser Facilitiesmentioning

confidence: 99%

“…The overall performance makes it qualified for the real-time contrast characterization of petawatt lasers. With the developed SSCC prototypes, we have successfully conducted in situ measurements on five sets of petawatt laser facilities in China [34][35][36][37] . In this paper, we will review our strategies to develop a practical SSCC.…”

Section: Introductionmentioning

confidence: 99%

Single-shot cross-correlator for pulse-contrast characterization of high peak-power lasers

Wang

Xie

et al. 2018

High Pow Laser Sci Eng

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Pulse contrast is a crucial parameter of high peak-power lasers since the prepulse noise may disturb laser–plasma interactions. Contrast measurement is thus a prerequisite to tackle the contrast challenge in high peak-power lasers. This paper presents the progress review of single-shot cross-correlator (SSCC) for real-time contrast characterization. We begin with the key technologies that enable an SSCC to simultaneously possess high dynamic range ($10^{10}$), large temporal window (50–70 ps) and high fidelity. We also summarize the instrumentation of SSCC prototypes and their applications on five sets of petawatt laser facilities in China. Finally, we discuss how to extend contrast measurements from time domain to spatiotemporal domain. Real-time and high-dynamic-range contrast measurements, provided by SSCC, can not only characterize various complex noises in high peak-power lasers but also guide the system optimization.

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High-contrast front end based on cascaded XPWG and femtosecond OPA for 10-PW-level Ti:sapphire laser

Cited by 55 publications

References 36 publications

Collimated GeV attosecond electron–positron bunches from a plasma channel driven by 10 PW lasers

Collimated GeV attosecond electron–positron bunches from a plasma channel driven by 10 PW lasers

The laser beamline in SULF facility

Single-shot cross-correlator for pulse-contrast characterization of high peak-power lasers

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