Patent ID: 7095555

Claim:
A multiple pass light rotation amplifier, comprising: a sample chamber defined by a first mirror and a second mirror and containing a sample surrounded by a magnetic field generator that creates a magnetic field around and through the sample; a light source supplying light to the sample chamber through the first mirror, the light reflecting a plurality of times between the first mirror and the second mirror, and the light undergoing cumulative rotation of a plane of polarization of the light with each pass of the light through the sample; an optical amplifier chamber amplifying the light passing therethrough and being defined by the second mirror and a third mirror, the light reflecting a plurality of times between the second mirror and the third mirror; and one or more additional chambers beyond the optical amplifier chamber, wherein the sample chamber transmits the light to the optical amplifier chamber, the optical amplifier chamber transmits the light to a first one of the additional chambers and transmits the light back to the sample where the light undergoes further rotation, and each one of the additional chambers transmits the light to a next one of the additional chambers and transmits the light back to a preceding one of the additional chambers, the first one of the additional chambers transmitting the light back to the optical amplifier chamber and a last one of the additional chambers outputting a rotation signal.