A 100-TW Th:Sapphire Laser System at a Repetition Rate of 0.1 Hz

Teng, Hao; Ma, Jing; Wang, Zhaohua; Zheng, Yi; Ge, Xuan; Zhang, Wei; Wei, Zhiyi; Li, Yutong; Zhang, Jie

doi:10.1088/0256-307x/29/1/014209

Cited by 2 publications

(1 citation statement)

References 12 publications

(7 reference statements)

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“…Based on the technique of chirp-pulse amplification (CPA) [22], the technology of table-top 100-TW-class laser is being developed continuously [23][24][25][26][27][28][29][30][31][32][33][34], and lasers with petawatt peak power are built at large research centers [35][36][37][38][39][40][41][42][43][44]. In the meantime, as the complexity of experiments increases, there is a growing need for precision control of laser-plasma interaction in the application of high-intensity lasers.…”

Section: Introductionmentioning

confidence: 99%

A 110-TW multiple-beam laser system with a 5-TW wavelength-tunable auxiliary beam for versatile control of laser-plasma interaction

et al. 2014

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A Ti:sapphire laser system has been constructed with two synchronized main beams of 110 TW and 13 TW, and a 5-TW wavelength-tunable synchronized auxiliary beam for versatile control of laser-plasma interaction. The first main beam provides 3.3-J, 30-fs, 810-nm pulses, and the second 450-mJ, 34-fs, 805-nm pulses. The auxiliary beam comes from amplified spectral windows selected from a supercontinuum of high spatial coherence and provides 38-fs pulses with tunable wavelengths (870-920 nm). The two main beams can be focused down to M 2 = 1.2 and 1.1, with 77 and 81 % energy enclosed in the focal spots, respectively. The energy fluctuations are 1.1 and 1.8 %, and the pointing fluctuations are 4.5 and 4.8 lrad, respectively. By using a preamplifier and saturable absorber before the pulse stretcher to suppress amplified spontaneous emission, the temporal contrast of the 110-TW main beam reaches 4 Â 10 À10 at the -100-ps timescale. Even though the auxiliary beam is generated from a highly nonlinear process, by confining the supercontinuum generation in a single self-trapping filament, a spatial coherence close to the main beams can be achieved. It can be focused down to M 2 = 1.3, with 72 % energy enclosed in the focal spot. The energy fluctuation is 2.6 %, and the pointing fluctuation is 4.7 lrad. The versatility of synchronized multiple-beams with tunable wavelengths, good energy and pointing stability, and the spatiotemporal quality of the laser system has been essential to our experiments in high-harmonic generation, extreme-UV lasers, and laser-wakefield accelerators in which precision control of laser-plasma interaction is facilitated by a concerted sequence of driving pulses.

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Section: Introductionmentioning

confidence: 99%

A 110-TW multiple-beam laser system with a 5-TW wavelength-tunable auxiliary beam for versatile control of laser-plasma interaction

et al. 2014

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Chirped pulse amplification of femtosecond pulse sequences in a Ti: sapphire laser

Ge¹,

Ma²,

Zheng³

et al. 2012

Acta Phys. Sin.

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An amplified femtosecond pulse sequence is generated in a multi-TW Ti: sapphire chirped pulse amplification system (JG-II facility). The pulse interval of the pulse sequence is 14.8 ns, corresponding to a frequency of 67.5 MHz. The compressed pulse sequence can reach 122 mJ in 19 independent pulses with a pulse width of about 60 fs. The energy of the pulses declines from 20 mJ to 0.5 mJ, corresponding to a peak power from 1011 W to 1010 W. The pulse sequence has important applications in lengthening the lifetime of the laser produced plasma channel in air and in microfabrication.

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A 100-TW Th:Sapphire Laser System at a Repetition Rate of 0.1 Hz

Cited by 2 publications

References 12 publications

A 110-TW multiple-beam laser system with a 5-TW wavelength-tunable auxiliary beam for versatile control of laser-plasma interaction

A 110-TW multiple-beam laser system with a 5-TW wavelength-tunable auxiliary beam for versatile control of laser-plasma interaction

Chirped pulse amplification of femtosecond pulse sequences in a Ti: sapphire laser

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