Beam quality research of high power ultraviolet ultrashort laser pulse system

被引：0

作者：

Su, Heng-Yi ^{[1
]}

Lan, Xiao-Fei ^{[1
]}

Zhang, Ji ^{[1
]}

Wang, Lei-Jian ^{[1
]}

Lu, Jian-Xin ^{[1
]}

Tang, Xiu-Zhang ^{[1
]}

机构：

[1] China Institute of Atomic Energy, P.O. Box 275-7, Beijing

来源：

Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2015年 / 49卷 / 02期

关键词：

Beam quality evaluation; KrF laser; Ultrashort pulse;

D O I：

10.7538/yzk.2015.49.02.0230

中图分类号：

学科分类号：

摘要：

By means of building transmitting and focusing optical system, the beam quality of high power ultraviolet ultrashort laser pulse system was researched by using a CCD camera. Relevant parameters obtained from the measurement are the spatial intensity distribution, the size of focal spot and beam quality β-factor of the ultraviolet seed laser and the amplified pulse after its amplification by a KrF laser system. The result shows that the beam quality of the ultraviolet seed laser beam is good. β-factor is closed to 1. After amplification the beam quality worsens and β-factor increases to about 6. Through analysis, surface defects of optical elements may be the major factor which leads to the degradation of the laser beam quality. ©, 2015, Atomic Energy Press. All right reserved.

引用

页码：230 / 233

页数：3

共 9 条

[1]

Strickland D., Mourou G., Compression of amplified chirped optical pulses, Optics Communication, 56, 3, pp. 219-221, (1985)

[2]

Perry M.D., Mourou G., Terawatt to petawatt subpicosecond lasers, Science, 264, 5161, pp. 917-924, (1994)

[3]

Tabak M., Clark D.S., Hatchett S.P., Et al., Review of progress in fast ignition, Physics of Plasmas, 12, 5, (2005)

[4]

Roth M., Cowan T.E., Key M.H., Et al., Fast ignition by intense laser-accelerated proton beams, Physical Review Letters, 86, 3, pp. 436-439, (2001)

[5]

Atzeni S., Temporal M., Honrubia J.J., A first analysis of fast ignition of precompressed ICF fuel by laser-accelerated protons, Nuclear Fusion, 42, 3, pp. L1-L4, (2002)

[6]

Serbanescu G.C., Chakera A.J., Fedosejevs R., Efficient Kα X-ray source from submillijoule femtosecond laser pulses operated at kilohertz repetition rate, Review of Scientific Instruments, 78, 10, (2007)

[7]

Zhang X., Shen B., Li X., Efficient GeV ion generation by ultraintense circularly polarized laser pulse, Physics of Plasmas, 14, 12, (2007)

[8]

Tang X., Zhang H., Li J., Et al., High power UV ultrashort pulse laser, Atomic Energy Science and Technology, 36, 2, pp. 112-116, (2002)

[9]

Gao W., Definition of laser beam quality β-factor, Acta Photonica Sinica, 32, 9, pp. 1038-1040, (2003)

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