AFC	Acoustic frequency comb
APD	Avalanche photodiode
BAW	Bulk acoustic wave
BLS	Brillouin light scattering
BS	Beam splitter
CW	Continuous wave
EGaIn	Eutectic gallium-indium alloy
FC	Frequency comb
FWM	Four wave mixing
LDV	Laser Doppler vibrometer
MOKE	Magneto-optical Kerr effect
OFC	Optical frequency comb
PBS	Polarising beam splitter
PSD	Power spectral density
SAW	Surface acoustic wave
SBS	Stimulated Brillouin scattering
SERS	Surface-enhanced Raman scattering
SONAR	Sound navigation and ranging
SW	Spin wave
TFPI	Tandem Fabry–Pérot interferometer
TLS	Two level system
UV	Ultraviolet
VIPA	Virtual image phase array
VP	Velocity profiler
WGM	Whispering gallery mode