Research on the spatial coherent characteristics of high power VCSEL

	Research on the spatial coherent characteristics of high power VCSEL
	Jia P.; Qin L.; Cui J.; Li X.; Chen Y.; Zhang J.; Zhang X.; Ning Y.
	2014
发表期刊	Zhongguo Jiguang/中文 Journal of Lasers
ISSN	ISBN/02587025
期号	41 页码:12
摘要	The spatial coherence properties of high power vertical cavity surface emitting lasers (VCSELs) are studied based on the theorem of partially coherent light proposed by Van Cittert-Zernike. The interference stripe patterns are gauged using the Young's double-slit experiment for the devices of 980 nm wavelength VCSEL single emitters. Then interference patterns are switched to grayscale by intensity distribution patterns for data collection. In this paper, the integral average value method is proposed to calculate the degree of spatial coherence. The proposed integral average value method and traditional average method are used respectively to calculate the light intensity of the pattern. The results are compared with those calculated by the theoretical value of Van Cittert-Zernike theorem. The VCSEL optical apertures' influence on coherent characteristics are also discussed. The experimental results show that, a relative error within 2.5%~9.4% is reached by our integral average value method. On the contrary, a relative error of 7.5%~67.4% are got from the traditional average method. Apparently, traditional average value method causes the error generally 1.5~27 times worse than our integral average value method. Moreover, for single emitter VCSELs with optical aperture from 200 m to 500 m, the smaller the optical aperture are, the larger the coherent degrees (between 0.731~0.426) are. The conclusion can be wildly used on theoretical and experimental design for VCSEL coherent arrays.
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/44348
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Jia P.,Qin L.,Cui J.,et al. Research on the spatial coherent characteristics of high power VCSEL[J]. Zhongguo Jiguang/中文 Journal of Lasers,2014(41):12.
APA	Jia P..,Qin L..,Cui J..,Li X..,Chen Y..,...&Ning Y..(2014).Research on the spatial coherent characteristics of high power VCSEL.Zhongguo Jiguang/中文 Journal of Lasers(41),12.
MLA	Jia P.,et al."Research on the spatial coherent characteristics of high power VCSEL".Zhongguo Jiguang/中文 Journal of Lasers .41(2014):12.