Tools / Optics
Optics calculators.
Stated assumptions.
Small calculators for everyday laser and optics work. Each page states its model, conventions and limits beside the result.
Runs in your browser. Nothing you enter is sent or stored.
01 / Units
Unit converter
Vacuum wavelength, frequency, wavenumber and photon energy; wavelength in a medium.
Open the converter →02 / Beams
Gaussian beam
Beam radius versus distance, Rayleigh range, divergence and beam parameter product, with M².
Open the explorer →03 / Pulses
Pulse calculator
Energy, repetition rate, average and peak power for Gaussian, sech² and flat-top pulses.
Open the calculator →04 / Damage
Damage check
Peak fluence and irradiance on an optic, against a coating data-sheet threshold scaled to your pulse.
Open the check →05 / Lenses
Lens focusing
Focus or expand a beam with one or two thin lenses: new waist, its position and the depth of focus.
Open the calculator →06 / Materials
Glass dispersion
Index, group index and GVD of six sourced materials, and how a short pulse stretches in them.
Open the calculator →