795-nm high-temperature and high-power operating vertical-cavity surface-emitting laser and application in atomic gyroscope

doi:10.7498/aps.71.20212422

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	795-nm high-temperature and high-power operating vertical-cavity surface-emitting laser and application in atomic gyroscope
	Y. L. Zhou; Y. C. Jia; X. Zhang; J. W. Zhang; Z. C. Liu; Y. Q. Ning and L. J. Wang
	2022
发表期刊	Acta Physica Sinica
ISSN	1000-3290
卷号	71 期号:13 页码:9
摘要	Single-transverse mode vertical-cavity surface-emitting lasers (VCSELs) are preferable optical sources forsmall low-power atomic sensors, including chip-scale atomic clocks, magnetometers, and gyroscopes.When VCSEL is used as the pump source of nuclear magnetic resonance gyroscope, it is required to have high single-mode output power. Oxide aperture diameter must be sufficiently small (< 4 mu m) in a conventional oxide-confined VCSEL to support the fundamental mode alone. However, high series resistance (typically > 200 Omega for GaAs-based VCSEL) from the small aperture limits its output power and reliability due to excessive current-induced self-heating and high current density. It is a very attractive idea to achieve high power operation of anintrinsic single mode VCSEL based on a large oxide aperture by means of epitaxial structure design without introducing additional process steps. Transverse optical confinement in oxide-confined VCSELs crucially depends on the thickness of oxide layer and its position relative to standing wave. Modifying the structurereduces the overlap between the oxide layer and the standing wave as well as the difference in effectiverefractive index between core and cladding of the VCSEL, thereby reducing the number of transverse modes and increasing the mode extension beyond oxide aperture. A 795-nm VCSEL is designed and fabricated based onthis concept. A cavity structure of VCSEL with gain-cavity detuning of similar to 10.8 nm at room temperature isadopted in this paper. The effective refractive index and the standing wave distribution of the VCSEL arecalculated, and the position of the oxide layer in the epitaxial structure of the VCSEL is optimized according tothe standing wave distribution. Finally, the structure with low effective refractive index difference is obtained.The proposed device achieves high single-mode operation of 4.1 mW at 80 degrees C, SMSR of 41.68 dB, and OPSR of 27.4 dB. The VCSEL is applied to a nuclear magnetic resonance gyroscope (NMRG) system as pump sourced ue to its excellent device performance, and satisfactory test results are obtained. This paper presents a new method of designing single-mode high power VCSEL and its feasibility is also demonstrated through experimental results.
DOI	10.7498/aps.71.20212422
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收录类别	sci ; ei
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66374
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	Y. L. Zhou,Y. C. Jia,X. Zhang,et al. 795-nm high-temperature and high-power operating vertical-cavity surface-emitting laser and application in atomic gyroscope[J]. Acta Physica Sinica,2022,71(13):9.
APA	Y. L. Zhou,Y. C. Jia,X. Zhang,J. W. Zhang,Z. C. Liu,&Y. Q. Ning and L. J. Wang.(2022).795-nm high-temperature and high-power operating vertical-cavity surface-emitting laser and application in atomic gyroscope.Acta Physica Sinica,71(13),9.
MLA	Y. L. Zhou,et al."795-nm high-temperature and high-power operating vertical-cavity surface-emitting laser and application in atomic gyroscope".Acta Physica Sinica 71.13(2022):9.

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