Optical module and laser radar

The invention provides an optical module and a laser radar, the optical module comprises a circuit board and a light emission sub-module, the light emission sub-module comprises a laser and an MCU, a bias circuit and a modulation circuit are arranged between the laser and the MCU, the bias circuit comprises a first filtering sub-circuit, and the modulation circuit comprises a second filtering sub-circuit. The first filtering sub-circuit and the second filtering sub-circuit respectively filter the bias current and the modulation current so as to eliminate electric noise in a line width test, so that the line width of an optical module laser is close to the intrinsic line width of the optical module laser, and the requirement of applying the optical module to a laser radar is met; the optical module provided by the embodiment of the invention is applied to the laser radar as a light source structure of the laser radar, and the laser radar is applied to automatic driving, so that the distance of a measured objec