Off-resonance laser frequency stabilization using the Faraday effect
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We present a simple technique for stabilization of a laser frequency off resonance using the Faraday effect in a heated vapor cell with an applied magnetic field. In particular, we demonstrate stabilization of a 780nm laser detuned up to 14GHz from the Rb85D252S1/2F=2 to 52P3/2F'=3 transition. Control of the temperature of the vapor cell and the magnitude of the applied magnetic field allows locking ~6-14GHz red and blue detuned from the atomic line. We obtain an rms fluctuation of 7MHz over 1h without stabilization of the cell temperature or magnetic field.
Atomic and Molecular Physics
Lasers and Quantum Electronics