title: MEMS-tunable VCSELs using 2D high-contrast gratings.
abstract: We demonstrate the room-temperature operation of a two-dimensional (2D) high-contrast grating (HCG) vertical-cavity surface-emitting laser (VCSEL) at 1080 nm. To the best of our knowledge, this is the first tunable electrically pumped surface-emitting laser using a 2D HCG. Our theory successfully explains the mechanism of broadband ultrahigh reflection of 2D HCGs. Our monolithic integrated laser exhibits single-mode output power above 0.68 mW under continuous-wave operation. Wavelength tunability is demonstrated via microelectromechanical system-controlled voltage.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Qiao
authors.forename: Kun
authors.initials: K
authors.lastname: Li
authors.forename: Kevin T
authors.initials: KT
authors.lastname: Cook
authors.forename: Connie J
authors.initials: CJ
authors.lastname: Chang-Hasnain