Design of a composite laser beam expander without obscuration

doi:10.3788/CO.20181104.0582

CIOMP OpenIR

	Design of a composite laser beam expander without obscuration
	Lu, Zheng-Wei; Shao, Shuai; Ma, Ya-Kun
	2018
发表期刊	Chinese Optics
ISSN	20951531
卷号	11 期号:4 页码:582-589
摘要	In order to meet the requirements of high-power laser emission, a large-diameter composite laser beam expander without central obscuration based on Cassegrain system is proposed to eliminate the central obscuration of the Cassegrain system and improve the laser emission efficiency. Based on the principle of the Cassegrain system and its structural characteristics, combined with the characteristics of the Galileo refraction type beam expander, a composite laser beam expander without central obscuration with an emission aperture of 550 mm is designed. Using a combination of a reflective beam expander and a refractive beam expander, a through hole is opened in the center of the Cassegrain secondary mirror so that the center is passed through the obscured laser. The rear side is connected to a Galileo-type refracting beam expander, which expands the beam transmitted through the center, and the two beams are emitted coaxially. The laser transmittance test is carried out on a new type of composite beam expander. The experimental results show that for the laser of 10.6 m wavelength, the transmittance is more than 95.21%, which is 22.12% higher than that of the traditional Cassegrain beam expander. 2018, China Science Publishing & Media LTD. All right reserved.
关键词	Laser mirrors Efficiency High power lasers Laser beams
DOI	10.3788/CO.20181104.0582
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60612
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Lu, Zheng-Wei,Shao, Shuai,Ma, Ya-Kun. Design of a composite laser beam expander without obscuration[J]. Chinese Optics,2018,11(4):582-589.
APA	Lu, Zheng-Wei,Shao, Shuai,&Ma, Ya-Kun.(2018).Design of a composite laser beam expander without obscuration.Chinese Optics,11(4),582-589.
MLA	Lu, Zheng-Wei,et al."Design of a composite laser beam expander without obscuration".Chinese Optics 11.4(2018):582-589.

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