Single-mode vertical-cavity surface-emitting laser with ring-shaped light-emitting aperture

Jin Wei Shi, C. H. Jiang, K. M. Chen, J. L. Yen, Ying Jay Yang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


In this letter, we demonstrate a single-mode vertical-cavity surface-emitting laser (VCSEL) with a ring-shaped light-emitting aperture, which is realized by the Zn diffusion technique, at a wavelength of 850 nm. Relative to the control VCSEL with an ordinary circular aperture and the same geometry and size, the demonstrated device can suppress the higher-order transverse mode more effectively without affecting the threshold current and output power. Compared with typical reported single-mode VCSELs, a larger light-emitting aperture and current-confined area with a smaller divergence angle of the output beam, and lower differential resistance are achieved with the present structure.

Original languageEnglish
Article number031109
JournalApplied Physics Letters
Issue number3
StatePublished - 18 Jul 2005


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