title: Off-resonance laser frequency stabilization using the Faraday effect.
abstract: 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 780 nm laser detuned up to 14 GHz from the (85)Rb D(2) 5(2)S(1/2) F = 2 to 5(2)P(3/2) F' = 3 transition. Control of the temperature of the vapor cell and the magnitude of the applied magnetic field allows locking ~6-14 GHz red and blue detuned from the atomic line. We obtain an rms fluctuation of 7 MHz over 1 h without stabilization of the cell temperature or magnetic field.
authors.affiliation: Department of Physics, Durham University, Rochester Building, South Road, Durham DH1 3LE, UK. a.l.marchant@durham.ac.uk
authors.forename: Anna L
authors.initials: AL
authors.lastname: Marchant
authors.forename: Sylvi
authors.initials: S
authors.lastname: Händel
authors.forename: Timothy P
authors.initials: TP
authors.lastname: Wiles
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Hopkins
authors.forename: Charles S
authors.initials: CS
authors.lastname: Adams
authors.forename: Simon L
authors.initials: SL
authors.lastname: Cornish