Optical resonators and Gaussian beams

Laser beam characteristics

Let us work with an “hemiconfocal” resonator with an effective length d, made of two mirrors (one is plane, the other has a R=2d radius of curvature)

Question

Show that this resonator is stable.

Solution

Question

What are the geometrical characteristics of the laser beam inside the cavity (waists on each mirrors, Rayleigh length, divergence) ?

Solution
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