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What is Knife-Edge Measurement of Gaussian Beams about?
Gaussian beams can be characterized mathematically and depend on the beam waist w0 and wavelength λ. The beam width w(z) increases away from the waist according to the Rayleigh range zR. The beam waist and Rayleigh range can be determined through knife-edge measurements of the beam width at different positions z. Specifically, measuring the distance between the 10% and 90% transmission points allows determining w(z) without a full profile fit. Real laser beams deviate from ideal Gaussians and have quality f
- Author
- Julian David Henao Escobar
- Language
- EN