Calculate spot size by using beam diameter, lens focal length and beam quality values.
Calculates peak power by average power, pulse width and repetition rate of laser.
Convert decibel (dB) to percentage (%) or % to dB
Calculate incident index and refracted index of a medium and incident and refracted angle of a beam.
Use core diameter, numerical aperture and wavelength values of your laser to calculate mode field diameter.
Convert frequency to wavelength or wavelength to frequency easily.