a semiconductor laser

Abstract

The invention provides a semiconductor laser which is characterized in that a pair of secondary laser-light protective goggles and a protective pyramidal through hole are sequentially arranged at the laser head in an emitting direction of the laser-light, wherein the pair of secondary laser-light protective goggles gives out laser light outside the laser through the protective pyramidal through hole; a gas blowing device is in the vicinity of the protective pyramidal through hole; and the air flow from a gas outlet of the gas blowing device blows the area below the through hole and advances downwards or horizontally. According to the semiconductor laser provided by the invention, during the laser cladding and other laser processing processes, the air flow from the gas outlet of the gas blowing device can continuously blow the area below the protective pyramidal through hole, so as to blow pollutants or molten alloy splashing objects out of the protective pyramidal through hole and protect the laser-light protective goggles from being polluted or damaged, and meanwhile, the influence of the gas from the protective pyramidal through hole on the alloy powder on the surfaces of preset workpieces is relieved.

Description

technical field [0001] The invention relates to a semiconductor laser and belongs to the field of laser equipment. Background technique [0002] A laser is a device that emits laser light. In 1954, the first microwave quantum amplifier was made and a highly coherent microwave beam was obtained. In 1958, A.L. Xiao Luo and C.H. Towns extended the principle of laser microwave quantum amplifier to the optical frequency range, and pointed out the method of generating laser. In 1960, T.H. Maiman and others made the first ruby ​​laser. In 1961, A. Jia Wen and others made a helium-neon laser. In 1962, R.N. Hall and others created a gallium arsenide semiconductor laser. [0003] There are many types of lasers. According to the different states of working substances, all lasers can be divided into the following categories: the first category, solid-state lasers (crystal and glass) lasers; the second category, gas lasers, gas lasers can be further divided into atomic gas laser...

AI Technical Summary

Problems solved by technology

The traditional semiconductor laser laser head includes a main body 11, a light outlet 12, and a primary protective lens 13. The laser light from inside the semiconductor laser passes through the primary protective lens 13 and is irradiated on the workpiece 15. At this time, the laser energy of the semiconductor laser is relatively high. , so during the laser cladding process, the molten alloy powder 14 from the surface of the workpiece 15 will be splashed, thereby contaminating or burning the primary protective mirror 13 of the laser

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