Research on Focus Zooming by Oscillator XeCl Excimer Laser

Yongxiang, 朱永祥 Zhu; Xueqing, 赵学庆 Zhao; Yun, 胡云 Hu; Dahui, 王大辉 Wang; Yongsheng, 张永生 Zhang

doi:10.3788/cjl201542.0502010

Cited by 2 publications

(1 citation statement)

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“…Because the laser spectrum is in ultraviolet band, XeCl excimer laser can form ablation and denudation effect and high coupling efficiency to the target [1] , which there are good application prospects for XeCl excimer laser in material processing [2][3][4] , laser spectrum [5][6] , optical pumping [7] , laser biomedical research [8][9][10] and laser-material interaction [11][12][13] , and a lot of applications have been carried out. In applications such as laser interaction with matter, high power ultraviolet laser pulses based on MOPA are sometimes needed [14][15] , which requires a low jitter and high energy XeCl excimer lasers. Compared with discharge pumping, electron-beam pumping can obtain XeCl excimer laser pulse of 100J, but the pumping device is usually a Marx generator or LTD linear transformer driver with many switches [1] , which the discharge control is more difficult and it is not easy to realize low jitter.…”

Section: Introductionmentioning

confidence: 99%

A low jitter 100J Xecl excimer laser

Huang

Wang

et al. 2022

Sixth International Symposium on Laser Interaction With Matter

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To obtain low jitter and high energy ultraviolet laser pulse, the XeCl excimer laser pumped by electron-beam was reported. The construction and the principle of the XeCl excimer laser with electron-beam pump source were described. Experimental study on laser output characteristic of the XeCl excimer laser was carried out, and effects on pressure of mix gas in laser chamber and charge voltage on jitter of laser pulse were showed. When the charge voltage of the laser is 81kV, the output energy of XeCl excimer laser was about 100J, its electric efficiency was about 0.58%, and the laser pulse jitter was less than 20ns.

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Section: Introductionmentioning

confidence: 99%

A low jitter 100J Xecl excimer laser

Huang

Wang

et al. 2022

Sixth International Symposium on Laser Interaction With Matter

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Optical zooming based on focusing grating in direct drive ICF

Huang

Zhou

et al. 2016

Opt. Express

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In direct drive ICF, optical zooming is an effective way to mitigate cross-beam energy transfer and increase the hydrodynamic efficiency, by reducing the spot size of the laser beams while target compressing. In this paper, a novel optical zooming scheme is proposed, which employs a focusing grating to focus the broadband laser pulse, changing the spot size on the target within single beamlet. Experimentally, a focusing grating with clean aperture of 40-mm × 40-mm placed after the collimated light successfully realized the peak-valley of defocusing wavefront distribution of 0.73 µm as the wavelength ranging from 1052.43 nm to 1053.23 nm. Extended to the full-sized focusing grating with laser beam of 360-mm × 360-mm, it is derived that the focal spot reduction reaches to 21.8% with the 3rd harmonic light ranging from 350.81 nm to 351.08 nm, decreasing from 375 µm to 294 µm with 300 µm shaping continuous phase plate.

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Research on Focus Zooming by Oscillator XeCl Excimer Laser

Cited by 2 publications

References 0 publications

A low jitter 100J Xecl excimer laser

A low jitter 100J Xecl excimer laser

Optical zooming based on focusing grating in direct drive ICF

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