Microlensed vertical-cavity surface-emitting laser for stable single fundamental mode operation

Park, Si-Hyun; Park, Yeonsang; Kim, Hyejin; Jeon, Heonsu; Hwang, Seong Mo; Lee, Jeong Kwan; Nam, Seung Ho; Koh, Byeong Cheon; Sohn, J. Y.; Kim, D. S.
January 2002
Applied Physics Letters;1/14/2002, Vol. 80 Issue 2, p183
Academic Journal
We propose and demonstrate a vertical-cavity surface-emitting laser structure that operates predominantly in the single fundamental transverse mode over a wide operation current range. In this laser structure, a microlens is integrated on top of an otherwise ordinary surface-emitting laser so that a small portion of laser output is fed back into the cavity, forcing the lasing to occur in the fundamental mode. Model calculations reproduce the observed mode selection effect. © 2002 American Institute of Physics.


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