Mid-infrared w quantum-well lasers for noncryogenic continuous-wave operation.
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.
Felix
C L
CL
Bewley
W W
WW
Vurgaftman
I
I
Bartolo
R E
RE
Stokes
D W
DW
Meyer
J R
JR
Yang
M J
MJ
Lee
H
H
Menna
R J
RJ
Martinelli
R U
RU
Garbuzov
D Z
DZ
Connolly
J C
JC
Maiorov
M
M
Sugg
A R
AR
Olsen
G H
GH