title: Large aperture vertical cavity surface emitting laser with distributed-ring contact.
abstract: To overcome the serious current crowding effect in top-emitting vertical cavity surface emitting lasers (VCSELs) with large aperture, a distributed-ring-contact (DRC) VCSEL is proposed and demonstrated. A maximal cw light output power of more than 0.3 W and a wall-plug efficiency of 17.4% are achieved for a 300 μm-diameter VCSEL. The DRC VCSEL exhibits a more homogeneous emission profile, and the laser emits at 803.3 nm with a narrow spectrum (less than 0.2 nm FWHM).
authors.affiliation: National Key Lab of High-Power Semiconductor Lasers, Changchun University of Science and Technology, Weixing Road 7089, Changchun, 130022, China. hyq720812@yahoo.com.cn
authors.forename: Yong-Qin
authors.initials: YQ
authors.lastname: Hao
authors.forename: Yan
authors.initials: Y
authors.lastname: Luo
authors.forename: Yuan
authors.initials: Y
authors.lastname: Feng
authors.forename: Chang-Ling
authors.initials: CL
authors.lastname: Yan
authors.forename: Ying-Jie
authors.initials: YJ
authors.lastname: Zhao
authors.forename: Yu-Xia
authors.initials: YX
authors.lastname: Wang
authors.forename: Xiao-Hua
authors.initials: XH
authors.lastname: Wang
authors.forename: Yi
authors.initials: Y
authors.lastname: Qu
authors.forename: Guo-Jun
authors.initials: GJ
authors.lastname: Liu