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We experimentally demonstrate a simple modulation-free scheme for ofset locking the frequency of a laser using bufer gas-induced resonance.Our scheme excludes the limitation of low difraction efciency and laser input intensity when an acousto-optic modulator is applied to shift the laser frequency from the resonance.We show the stabilization of a strong 795-nm laser detuned up to 550 MHz from the87Rb 5S1/2F=2→5P1/2F’=2 transition.The locking range can be modifed by controlling the bufer gas pressure.A laser line width of 2 MHz is achieved over 10 min.
We experimentally demonstrate a simple modulation-free scheme for ofset locking the frequency of a laser using bufer gas-induced resonance. Our scheme excludes the limitation of low difraction efciency and laser input intensity when an acousto-optic modulator is applied to shift the laser frequency from the resonance. We show the stabilization of a strong 795-nm laser detuned up to 550 MHz from the 87Rb 5S1 / 2F = 2 → 5P1 / 2F ’= 2 transition. locking range can be modifed by controlling the bufer gas pressure. A laser line width of 2 MHz is achieved over 10 min.