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Laser pulse calculator

Wavelength		Laser setting		Geometry
ν:	THz	CW power:	W	beam waist 1:	µm, AOI: deg
ν:	cm^-1	Rep rate:	Hz	beam waist 2:	µm, AOI: deg
λ:	nm
E:	eV	Pulse properties		Fields & Intensities
Bandwidth (FWHM)		pulse energy:	J	peak E-field:	V/m
ΔE:	meV	Nphotons/pulse:		peak B-field:	T
Δt:	fs	Nphotons/sec:		peak fluence:	J/cm²
Δλ:	nm	peak power:	W	peak intensity:	W/cm²
				CW intensity:	W/cm²

Adapted from Patrick Kirchmann's Igor Pro code

Other useful links:
Wavelength unit conversions: Halas Nanophotonics Group
Gaussian beam propagation: LightMachinery calculator
Everything else: Optics Toolbox