title: Mid-infrared w quantum-well lasers for noncryogenic continuous-wave operation.
abstract: We review the recent progress of electrically injected and optically pumped mid-IR lasers based on antimonide quantum wells with the type II W configuration. W quantum-well diodes have achieved cw operation up to 195 K at lambda = 3.25 mum. Optically pumped devices that employ the diamond pressure bond heat sink have reached 290 K at 3 mum and 210 K at 6 mum. Pulsed power conversion efficiencies of up to 7% at 220 K have been attained by use of an optical pumping injection cavity approach, in which an etalon cavity for the pump beam significantly enhances its absorptance. The angled-grating distributed-feedback configuration has been used to obtain near-diffraction-limited output for an optical pumping stripe width of 50 mum.
authors: C L
authors: CL
authors: Felix
authors: W W
authors: WW
authors: Bewley
authors: I
authors: I
authors: Vurgaftman
authors: R E
authors: RE
authors: Bartolo
authors: D W
authors: DW
authors: Stokes
authors: J R
authors: JR
authors: Meyer
authors: M J
authors: MJ
authors: Yang
authors: H
authors: H
authors: Lee
authors: R J
authors: RJ
authors: Menna
authors: R U
authors: RU
authors: Martinelli
authors: D Z
authors: DZ
authors: Garbuzov
authors: J C
authors: JC
authors: Connolly
authors: M
authors: M
authors: Maiorov
authors: A R
authors: AR
authors: Sugg
authors: G H
authors: GH
authors: Olsen