Sweep frequency laser and optical coherence tomography system

The invention discloses a sweep frequency laser and an optical coherence tomography system. The sweep frequency laser comprises a light beam generation device; the first acousto-optic deflection frequency selection assembly comprises a first acousto-optic deflector, a first ultrasonic generator and a first frequency selection reflection device, the first acousto-optic deflector is used for receiving the first light beam and the first ultrasonic wave and outputting a second light beam, and the first frequency selection reflection device is used for reflecting a third light beam obtained through frequency selection to the first acousto-optic deflector; the second acousto-optic deflection frequency selection assembly comprises a second acousto-optic deflector, a second ultrasonic generator and a second frequency selection reflection device, the second acousto-optic deflector is used for receiving the third light beam and the second ultrasonic and outputting a fourth light beam, and the second frequency selection