Stabilizing optical resonators
First Claim
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1. A method for stabilizing an optical resonator, comprising:
- providing an optical resonator that comprises a birefringent medium, and supports whispering gallery modes circulating in the birefringent medium;
injecting a coherent optical beam that has polarization components in polarization directions of both ordinary and extraordinary polarization waves in whispering gallery modes, the coherent optical beam comprising a first optical component at a first optical frequency in resonance with the ordinary polarization wave and a second optical component at a second optical frequency in resonance with the extraordinary polarization wave;
monitoring a change in a difference between the first optical frequency and the second optical frequency; and
controlling the optical resonator to reduce the monitored change in the difference between the first optical frequency and the second optical frequency to stabilize the resonator resonance frequency of the optical resonator.
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Abstract
Techniques and devices that stabilize optical resonators.
87 Citations
14 Claims
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1. A method for stabilizing an optical resonator, comprising:
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providing an optical resonator that comprises a birefringent medium, and supports whispering gallery modes circulating in the birefringent medium; injecting a coherent optical beam that has polarization components in polarization directions of both ordinary and extraordinary polarization waves in whispering gallery modes, the coherent optical beam comprising a first optical component at a first optical frequency in resonance with the ordinary polarization wave and a second optical component at a second optical frequency in resonance with the extraordinary polarization wave; monitoring a change in a difference between the first optical frequency and the second optical frequency; and controlling the optical resonator to reduce the monitored change in the difference between the first optical frequency and the second optical frequency to stabilize the resonator resonance frequency of the optical resonator. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device, comprising:
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an optical resonator that comprises a birefringent medium, and supports whispering gallery modes circulating in the birefringent medium; an optical light source module that produces a coherent optical beam that comprises a first optical component at a first optical frequency and a second optical component at a second optical frequency different from the first optical frequency; an optical coupler that couples the coherent optical beam into the optical resonator to have polarization components in polarization directions of both ordinary and extraordinary polarization waves in whispering gallery modes in the optical resonator, wherein the first optical frequency is in resonance with the ordinary polarization wave and the second optical frequency is in resonance with the extraordinary polarization wave; a monitoring mechanism that monitors a change in a difference between the first optical frequency and the second optical frequency; and a resonator controller that controls the optical resonator to reduce the monitored change in the difference between the first optical frequency and the second optical frequency to stabilize the resonator resonance frequency of the optical resonator. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification