Abstract: Disclosed in the present invention is a semiconductor laser, which includes one or more semiconductor chips (1-1), a total length of a gain region (1-11A) of a light-emitting unit (1-11) of each of the semiconductor chips (1-1) in a slow axis direction being 1 mm˜10 cm; a laser resonant cavity configured to adjust semiconductor laser emitted by the light-emitting unit (1-11) to resonate in the slow axis direction, so that the size of the gain region (1-11A) of the light-emitting unit (1-11) in the slow axis direction matches a fundamental mode spot radius ?0; and a fast-axis collimating element (FAC) disposed in the laser resonant cavity and configured to collimate the laser emitted by the light-emitting unit (1-11) in a fast axis direction. The semiconductor laser according to an embodiment of the present invention can improve the high-power output capability of the gain region on the one hand, and improve the beam quality on the other hand, which can achieve a high beam quality output of M2<2.

Abstract: A laser display system includes a red light semiconductor laser module (1), a green light semiconductor laser module (2), a blue light semiconductor laser module (3), a decoherence device (7, 8, 9), light valves (12, 13, 14), collimating and shaping devices (4, 5, 6), a heat dissipating modules (16-1, 16-2, 16-3), a temperature control module (17) and a semiconductor laser control module (18). The wavelength range output by the red light semiconductor laser module (1) is from 635 nm to 670 nm; the wavelength range output by the green light semiconductor laser module (2) is from 515 nm to 530 nm; the wavelength range output by the blue light semiconductor laser module (3) is from 440 nm to 460 nm.

Abstract: A laser display system includes a red light semiconductor laser module (1), a green light semiconductor laser module (2), a blue light semiconductor laser module (3), a decoherence device (7, 8, 9), light valves (12, 13, 14), collimating and shaping devices (4, 5, 6), a heat dissipating modules (16-1, 16-2, 16-3), a temperature control module (17) and a semiconductor laser control module (18). The wavelength range output by the red light semiconductor laser module (1) is from 635 nm to 670 nm; the wavelength range output by the green light semiconductor laser module (2) is from 515 nm to 530 nm; the wavelength range output by the blue light semiconductor laser module (3) is from 440 nm to 460 nm.