3 ms·
>"In optics, a Fabry–Pérot interferometer (FPI) or etalon is an optical cavity made from two parallel reflecting surfaces (i.e.: thin mirrors). Optical waves c
by peter_d_sherman 3y ago
>"In optics, a Fabry–Pérot interferometer (FPI) or etalon is an optical cavity made from two parallel reflecting surfaces (i.e.: thin mirrors).
Optical waves can pass through the optical cavity only when they are in resonance with it."