Mid-infrared vertical-cavity surface-emitting lasers for chemical sensing.
The first (to our knowledge) III-V mid-IR vertical-cavity surface-emitting lasers (lambda = 2.9 microm) are demonstrated and show promising characteristics for chemical detection applications. The cw optical-pumping threshold is low (4 mW at 80 K) and efficiency is high (5.6% W/W). Pulsed operation is obtained up to 280 K and cw up to 160 K. Lateral-mode confinement will lead to spectrally pure, single-mode output for chemical identification.
Bewley
W W
WW
Hughes Research Laboratory, MS RL63, Malibu, California 90265, USA.
Felix
C L
CL
Vurgaftman
I
I
Aifer
E H
EH
Olafsen
L J
LJ
Meyer
J R
JR
Goldberg
L
L
Chow
D H
DH