Wiki
A searchable home for the optics notes behind the calculator: formulas, propagation rules, design patterns, and worked laser layout examples.
Gaussian beam optics: formulas and propagation
The core quantities and transformations: waist radius, Rayleigh range, divergence, Gouy phase, q parameter, ABCD propagation, thin-lens focusing, paraxial limits, and beam quality.
Open pageLaser beam expander design: Galilean and Keplerian telescopes
How to choose and space two-lens beam expanders, compare Galilean and Keplerian layouts, and open a worked 852 nm fiber example in the calculator.
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