Ultrahigh-power near-infrared semiconductor laser illuminator

Abstract

The invention discloses an ultrahigh-power near-infrared semiconductor laser illuminator which comprises a main shell and a plurality of laser modules. Each laser module is composed of a single-bar semiconductor laser and a fixed laser cooling assembly, wherein the single-bar semiconductor laser is used for generating a laser beam. A convergent lens is arranged at the front end of each single-bar semiconductor laser, and a primary reflector and a secondary reflector are arranged at the front end and the rear end of each convergent lens correspondingly. A plurality of laser beams are reflected by the primary reflectors and then are converged on the surfaces of the secondary reflectors, and the laser beams are reflected by the secondary reflectors and then are combined to form a laser beam with a good homogenized effect. A shaping prism set is used for adjusting the light emitting angle of the laser beam to meet illumination requirements. According to the ultrahigh-power near-infrared semiconductor laser illuminator, the laser beams emitted by the lasers are overlapped to form an overlapped laser with the good homogenized effect, so that the problems that multiple illuminators are large in size, high in cost and difficult to align and overlap when a kilowatt semiconductor laser emits lasers in a pulse way are solved; the beneficial effects are remarkable, and the illuminator is suitable for application and popularization.

Description

technical field [0001] The invention relates to a semiconductor laser illuminator, in particular to an ultra-high-power near-infrared semiconductor laser illuminator in the field of laser illumination. Background technique [0002] At present, the traditional laser night vision system is usually a continuous lighting imaging system. Due to the influence of atmospheric backscattering, the working distance generally does not exceed 3000 meters. Backscattering will exist even under the condition of good air quality. First, there will always be water vapor and tiny particles in the air. Second, the divergence angle of the long-distance lighting beam is small. Third, the distance between lighting and imaging equipment is relatively close. . When long-distance night vision lighting is used, the backscattering of the light source beam is easily highlighted when looking at the target from the position of the lighting source, especially in nights with slight fog. as in the accompan...

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Problems solved by technology

However, since it is an independent illuminator, there will be serious interference speckle phenomenon. At the same time,

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