THz calculators
Four conversions that come up in every terahertz experiment. Everything updates as you type; nothing is sent anywhere.
Spectral unit converter
Wavelength
—
Wavenumber
—
Photon energy
—
Period
—
TDS scan range ↔ resolution
Frequency resolution is set by the length of the time trace: Δf = 1/T.
Frequency resolution
—
Delay stage travel
—
PCA Scanner: 600 ps / < 2 GHz basic, 3 ns / < 0.5 GHz option.
Diffraction-limited spot
d = 1.22 λ f / D.
Spot diameter
—
f-number
—
RIGI field of view
Active area of the focal-plane array, before the objective.
Active area
—
Total pixels
—