title: Optically pumped GaN vertical cavity surface emitting laser with high index-contrast nanoporous distributed Bragg reflector.
abstract: Laser operation of a GaN vertical cavity surface emitting laser (VCSEL) is demonstrated under optical pumping with a nanoporous distributed Bragg reflector (DBR). High reflectivity, approaching 100%, is obtained due to the high index-contrast of the nanoporous DBR. The VCSEL system exhibits low threshold power density due to the formation of high Q-factor cavity, which shows the potential of nanoporous medium for optical devices.
authors.forename: Seung-Min
authors.initials: SM
authors.lastname: Lee
authors.forename: Su-Hyun
authors.initials: SH
authors.lastname: Gong
authors.forename: Jin-Ho
authors.initials: JH
authors.lastname: Kang
authors.forename: Mohamed
authors.initials: M
authors.lastname: Ebaid
authors.forename: Sang-Wan
authors.initials: SW
authors.lastname: Ryu
authors.forename: Yong-Hoon
authors.initials: YH
authors.lastname: Cho