Fenwick & West LLP
Etalons with variable reflectivity
An etalon has a first surface which is partially reflective. The reflectivity of the first surface varies with position. Thus, this reflectivity can in effect be adjusted by varying the point at which an optical beam is incident upon the etalon. At one point of incidence, the optical beam experiences one reflectivity. At a different point of incidence, the optical beam experiences a different reflectivity.
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