Multiple pass Faraday rotation amplifier

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 adjacent to the sample chamber, the optical amplifier 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
• a multiplier chamber adjacent to the optical amplifier chamber,
• wherein the sample chamber transmits the light to the optical amplifier chamber, the optical amplifier chamber transmits the light to the multiplier chamber and reflects the light back to the sample where the light undergoes further rotation, and the multiplier chamber reflects the light back to the optical amplifier chamber and outputs a rotation signal.

A multiple pass light rotation amplifier, comprising:

• a sample chamber receiving light and containing a sample, the light reflecting a plurality of times within the sample and the sample chamber and undergoing cumulative Faraday rotation with each pass of the light through the sample;
• an optical amplifier chamber adjacent to the sample chamber to amplify the light passing therethrough;
• and
• a multiplier chamber adjacent to the optical amplifier chamber, the multiplier chamber receiving the light from the optical amplifier chamber, outputting a rotation signal, and reflecting the light back to the optical amplifier chamber, and the optical amplifier chamber reflecting the light received from the sample chamber and the multiplier chamber back to the sample chamber, where the light undergoes further rotation.