Performance of Smoothing by Spectral Dispersion Combined with Distributed Phase Plate on SG-II

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 高功率激光物理国家实验室

	Performance of Smoothing by Spectral Dispersion Combined with Distributed Phase Plate on SG-II
	Jiang, Youen ; Wu, Rong ; Zhou, Shenlei ; Li, Jinghui ; Li, Xuechun ; Lin, Zunqi
	2013
会议名称	5th international symposium on photoelectronic detection and imaging (ispdi) - high power lasers and applications
通讯作者	jiang, ye (reprint author), chinese acad sci, shanghai inst opt & fine mech, natl lab high power laser phys, shanghai 201800, peoples r china.
英文摘要	experimental performance of one-dimensional (1d) smoothing by spectral dispersion (ssd) combined with distributed phase plate (dpp) on the ninth beam of sg-ii is presented. without the application of ssd, normalized focal-spot non-uniformity of an 85% energy concentration is about 60%. then, spectral bandwidth of the 3-ns, 1053-nm laser pulse is broadened to 0.3 nm (as 270ghz in 3 omega) by a 3-ghz modulator and a 10-ghz modulator integrated in the front-end system. spectral dispersion of 236 mu rad/angstrom is achieved by a littrow-configuration, 1480-l/mm grating placed between the phi 40mm faraday isolator and the third phi 40mm rod-amplifier. by using such ssd, normalized non-uniformity with the same energy concentration is decreased to 16%. a scheme of spatial power spectral density (psd) in different directions is adopted to analyze the intensity distribution of the far-field irradiation. based on the spatial psd analysis, theoretical predictions of spectral peak caused by ssd's color cycles is in excellent agreement with the experimental result. with double-frequency modulation, the amplitude of the spectral peak is reduced by similar to 10db. the temporal waveform of the 1 omega laser is measured. waveform distortion criterion defining the frequency modulation to amplitude modulation conversion (fm-to-am) is about 6% with 1 omega laser energy of similar to 1.8kj.
收录类别	CPCI
会议录	international symposium on photoelectronic detection and imaging 2013: high power lasers and applications
会议录出版者	spie-int soc optical engineering
语种	英语
内容类型	会议论文
源URL	[http://ir.siom.ac.cn/handle/181231/17166]
专题	上海光学精密机械研究所_高功率激光物理国家实验室
作者单位	1.[Jiang, Youen 2.Wu, Rong 3.Zhou, Shenlei 4.Li, Jinghui 5.Li, Xuechun 6.Lin, Zunqi] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Natl Lab High Power Laser Phys, Shanghai 201800, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Youen,Wu, Rong,Zhou, Shenlei,et al. Performance of Smoothing by Spectral Dispersion Combined with Distributed Phase Plate on SG-II[C]. 见:5th international symposium on photoelectronic detection and imaging (ispdi) - high power lasers and applications.