1
Q
quality factor (laser resonator)
3
QAPD
quadrant avalanche photodetector
5
QCL
quantum cascade laser
6
QCW
quasi-continuous wave
9
QED
quantum electrodynamics
10
QPM
quaternary pulse modulation
11
QPSK
quadrature phase-shift keying
12
QSR
quick strike reconnaissance
14
QWIP
quantum-well infrared photodetector
15
QWOT
quarterwave optical thickness