Narrow-spectral-span spectral beam combining with a nonparallel double-grating structure

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 > 信息光学与光电技术实验室

	Narrow-spectral-span spectral beam combining with a nonparallel double-grating structure
	Zhou, Changhe; Yu, Na; Wei, Chunlong; Jia, Wei; Lu, Yancong; Zhou, Quan
刊名	Chin. Opt. Lett.
	2017
卷号	15 期号:9
通讯作者	chazhou@mail.shcnc.ac.cn
英文摘要	We propose a nonparallel double-grating structure in a spectral-beam combining technique, where two gratings are placed nonparallel satisfying the Littrow mount in the focal region of the convergent lens. The most attractive advantage of this approach is that it will compress the spectral span into half of its original spectrum, which means the number of combined elements can be doubled in the gain range of diode lasers. Experimental results demonstrate that the CW output power of the combined beam is 30.9 W with a spectral span of 7.0 nm, compared with its original spectrum span of 13.6 nm, and the spectral beam combining efficiency is 70.5%. In consideration that a single grating could have a high efficiency of > 97% in a bandwidth of over ten nanometers, the efficiency loss of the grating pair should be less than 6%, which is acceptable for most applications, so this method of using double gratings should be highly interesting for practical applications when a nearly doubled number of diode lasers could be combined into one single laser compared with the previous single-grating methods.
收录类别	SCI
资助信息	Shanghai Science and Technology Committee [16DZ2290102, 15JC1403500]; Chinese Academy of Sciences [QYZDJ-SSW-JSC014]; National Natural Science Foundation of China [61405216]
WOS记录号	WOS:000410143200017
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/27522]
专题	上海光学精密机械研究所_信息光学与光电技术实验室
作者单位	中国科学院上海光学精密机械研究所
推荐引用方式 GB/T 7714	Zhou, Changhe,Yu, Na,Wei, Chunlong,et al. Narrow-spectral-span spectral beam combining with a nonparallel double-grating structure[J]. Chin. Opt. Lett.,2017,15(9).
APA	Zhou, Changhe,Yu, Na,Wei, Chunlong,Jia, Wei,Lu, Yancong,&Zhou, Quan.(2017).Narrow-spectral-span spectral beam combining with a nonparallel double-grating structure.Chin. Opt. Lett.,15(9).
MLA	Zhou, Changhe,et al."Narrow-spectral-span spectral beam combining with a nonparallel double-grating structure".Chin. Opt. Lett. 15.9(2017).