Laser with transmission and reflection mode feedback control

摘要

One embodiment is directed towards a stabilized laser including a laser to produce light at a frequency and a resonator coupled to the laser such that the light from the laser circulates therethrough. The laser also includes 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 the reflection port of the resonator and transmission port feedback electronics configured to adjust the frequency of the light from the laser toward resonance of the resonator at the 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.

主权项

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.