ADC	Analog to Digital Converter
cw	Continuous wave
FIR	Far Infrared
FoV	Field Of View
fps	Frames per second
fs	Femto second
HRFZ-Si	High Resistivity Float Zone Silicon
NA	Numerical Aperture
NEP	Noise Equivalent Power
NIR	Near-infrared
OAPM	Off-Axis Parabolic Mirror
PCA	Photo Conductive Antenna
PE	Polyethylene
ps	Pico second
QCL	Quantum Cascade Laser
RX	Receiver
Si	Silicon
TDS	Time Domain Spectroscopy/Spectrometer
THz	Terahertz
TX	Transmitter
VIS	Visible spectrum