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	High power VCSEL device with periodic gain active region (EI CONFERENCE)
	Ning Y. Q. ; Qin L. ; Sun Y. F. ; Li T. ; Cui J. J. ; Peng B. ; Liu G. Y. ; Zhang Y. ; Liu Y. ; Wang L. J. ; Cui D. F. ; Xu Z. Y.
	2007
会议名称	Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007
会议地点	Wuhan, China
关键词	High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.
收录类别	EI
内容类型	会议论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/33931]
专题	长春光学精密机械与物理研究所_中科院长春光机所知识产出_会议论文
推荐引用方式 GB/T 7714	Ning Y. Q.,Qin L.,Sun Y. F.,et al. High power VCSEL device with periodic gain active region (EI CONFERENCE)[C]. 见:Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007. Wuhan, China.

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