Rayleigh length, explained by RP Photonics Encyclopedia; Rayleigh range, Gaussian beam, confocal parameter
Spot Size Calculator - PowerPhotonic
Modified Thin-Lens Equation for Laser Light
OSN: PreDesigner - free optical layout tool - lens calculator - paraxial or Gaussian beam - lens diagram, lens angle, beam waist, beam divergence, Rayleigh range, image size, lens focus, lens focal
Gaussian Beam Optics
Rayleigh Length (Range) Calculator
laser - How to find rayleigh range and beam waist if I took several measurements of beam radius at some fixed distance from the lens? - Physics Stack Exchange
Gaussian Beam Optics
Spot Size Calculator
Beam Delivery: M2, BPP, Spot Size & Why You Should Care – Laser Chirp
Rayleigh range of fiber collimators and couplers
Understanding the Paraxial Gaussian Beam Formula | COMSOL Blog
Laser spot size and beam waist calculator and formulas - Gentec-EO
Spot Size Calculator - PowerPhotonic
Gaussian Beam Calculator — reZonator2 Manual
Focal Spot Size Calculator for Gaussian Laser Beams | Ophir Photonics
Focus Spot Size - Wavelength Opto-Electronic
F/# & N.A - Wavelength Opto-Electronic
Gaussian Beams Calculator | Edmund Optics
Gaussian beam - Wikipedia
Gaussian Beam Calculator — reZonator2 Manual
Lidaris online calculator - Lidaris
BeamSquared® - Measurement of Long Rayleigh Range Lasers with Small Focal Spot | Ophir Photonics
Depth of field, the Rayleigh range. | Download Scientific Diagram
Beam Delivery: M2, BPP, Spot Size & Why You Should Care – Laser Chirp
