795 nm VCSELs for 87Rb based miniaturized atomic clock

	795 nm VCSELs for 87Rb based miniaturized atomic clock
	Zhang J.; Ning Y.-Q.; Zhang J.-W.; Zhang X.; Zeng Y.-G.; Wang L.-J.
	2014
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	ISBN/1004924X
卷号	22 期号:1 页码:50-57
摘要	For the special requirements of the exciting source of a 87Rb based atomic clock for the miniaturization and high temperature conditions, a 795 nm Vertical Cavity Surface Emitting Laser(VCSEL)corresponding to the Rb atom energy level transition was designed and fabricated. Firstly, the energy levels and material gains of the InAlGaAs/AlGaAs Multiple Quantum Wells (MQWs) were calculated by the kp method to optimize the compositions and thicknesses of the quantum wells. Then, a Distributed Bragg Reflectors(DBRs) at 795 nm were designed and their reflection characteristics, longitudinal optical fields and averaged doping profiles were calculated and optimized using a one-dimensional transfer matrix method. Finally, the epitaxial structure of the 795 nm VCSEL with optimized MQWs and DBRs were grown on a GaAs substrate by Metal Organic Vapor Phase Epitaxy (MOVPE) and the oxide-confined 795 nm top-emitting VCSELs with unclosed-mesa structures were fabricated and characterized. Experimental results indicate that the packaged VCSELs can keep lasing under a cw current from 25 C to 85 C with power decreasing from 17 mW to 1.8 mW, the far field profiles are circular with a divergence angle of 15 and the temperature-shift of the lasing wavelength is 0.064 nm/C. Moreover, the lasing wavelength moves to the wavelength required by 87Rb atoms at an ambient temperature of 52 C and a current of 100 mA. The 795 nm VCSELs satisfy the basic requirements of 87Rb based miniaturized atom clocks for stable operation in a special wavelength and high-temperatures.
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/181722/43663
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhang J.,Ning Y.-Q.,Zhang J.-W.,et al. 795 nm VCSELs for 87Rb based miniaturized atomic clock[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2014,22(1):50-57.
APA	Zhang J.,Ning Y.-Q.,Zhang J.-W.,Zhang X.,Zeng Y.-G.,&Wang L.-J..(2014).795 nm VCSELs for 87Rb based miniaturized atomic clock.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,22(1),50-57.
MLA	Zhang J.,et al."795 nm VCSELs for 87Rb based miniaturized atomic clock".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 22.1(2014):50-57.

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