Patent ID: 9170108
Filing Date: 2015-10-27
Classification: G01C,H01S,H04B

Abstract:
1. A light-source system to output at least one stable phase modulated coherent light beam, the light-source system comprising: a multi-frequency laser system that emits a reference light beam having a reference carrier frequency; and provides at least one unmodulated-light beam phase locked to the reference beam having a respective at least one carrier frequency that is offset from the reference carrier frequency by a respective at least one frequency difference; at least one phase modulator to modulate the respective at least one unmodulated-light beam provided by the multi-frequency laser system; at least one frequency-selection device to monitor a respective at least one frequency component of interest; at least one feedback photodetector to provide, to the respective at least frequency-selection device, information indicative of beat frequencies between the reference light beam and the at least one modulated-light beam; and at least one modulation servo to adjust a modulation amplitude applied to the respective at least one phase modulator to substantially suppress one of: the respective electric field at least one carrier frequency; or the electric field components at the frequencies associated with a selected sideband-pair of the at least one modulated-light beam.