Patent ID: 9537283
Date: 2017-01-03
CPC Classifications: G01C,H01S

Claim:
1. A stabilized laser comprising: a laser to produce light at a frequency; a resonator coupled to the laser such that the light from the laser circulates therethrough; Pound-Drever-Hall (PDH) feedback electronics configured to adjust the frequency of the light from the laser to reduce phase noise in response to light sensed at a reflection port of the resonator; transmission port feedback electronics configured to adjust the frequency of the light from the laser toward resonance of the resonator at a transmission port in response to the light sensed at the transmission port of the resonator, wherein the transmission port feedback electronics adjust the frequency at a rate at least ten times slower than the PDH feedback electronics; a master laser coupled to the PDH feedback electronics and to the resonator, the master laser to produce a reference light to propagate through the resonator, wherein the PDH feedback electronics are configured to reduce phase noise in the reference light by adjusting a frequency of the master laser toward resonance at the reflection port, wherein the laser comprises a first slave laser to produce a first slave light; and a first phase-lock-loop (PLL) coupled to the transmission mode feedback electronics, the first PLL to beat the first slave light with the reference light and to generate a first PLL adjustment signal to drive the first slave laser toward a lock with the reference light.