Dual gratings based on surface plasmons for optical beam shaping

	Dual gratings based on surface plasmons for optical beam shaping
	Chen Y.-Y.; Qin L.; Tong C.-Z.; Wang L.-J.; Liu Y.-C.
	2014
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	ISBN/1004924X
卷号	22 期号:6 页码:1461-1468
摘要	To shape the beam with two-lobe far-field property from a dual side Bragg reflection waveguide semiconductor laser, a dual grating structure based on surface plasmons was prepared on the optical outlet facet of a Bragg reflection waveguide. It could combine the two lobes into a single lobe and to increase the optical intensity and quality of the beam. An Au-SiO2 grating was used to couple photons into surface plasmons and to combine the two lobe beams into a single beam. The surface plasmons also were taken to increase the extraordinary optical transmission. On the other hand, the Au-Si3N4 grating was used to help the outlet surface plasmons couple back to photons, meanwhile collimating the outlet beam to increase the far-field property. Numerical simulation results indicate when the parameters for Au-SiO2 show a depth of 50 nm, a filling factor of 0.5 and a duration of 350 nm, and those for Au-Si3N4 show 70, 0.5 and 660 nm, respectively, the outlet far-field beam will has a 6.1 divergence, which means the divergence angle shrinks by 3.6 times as that without the dual grating structure. The far-field optical transmission power reaches 62% of the model source, that is 1.59 times of the power of a single lobe far-field to the structure without the dual grating. Moreover, the cavity facet reflectivity has reduced to 12.4%, 0.53 times as the structure without the dual grating. It concludes that the dual grating structure has optimized the far field properties of dual side Bragg reflection waveguide semiconductor lasers.
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/181722/43906
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Chen Y.-Y.,Qin L.,Tong C.-Z.,et al. Dual gratings based on surface plasmons for optical beam shaping[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2014,22(6):1461-1468.
APA	Chen Y.-Y.,Qin L.,Tong C.-Z.,Wang L.-J.,&Liu Y.-C..(2014).Dual gratings based on surface plasmons for optical beam shaping.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,22(6),1461-1468.
MLA	Chen Y.-Y.,et al."Dual gratings based on surface plasmons for optical beam shaping".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 22.6(2014):1461-1468.

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