2.9 mu m intermediate infrared solid-state laser based on automatic Raman pump

Abstract

Disclosed is a 2.9 mu m intermediate infrared solid-state laser based on an automatic Raman pump. The 2.9 mu m intermediate infrared solid-state laser based on the automatic Raman pump comprises a pumping source, a beam shaping device, an input coupling optical lens, an automatic Raman crystal, a Q switch, a first output mirror, a first all-trans mirror, a gain medium, a second all-trans mirror and a second output mirror. The connection relationship of the upper elements is that the pumping source, the beam shaping device, the input coupling optical lens, the automatic Raman crystal, the Q switch, the first output mirror, the gain medium and the first all-trans mirror are arranged in sequence along a pumping optical path, and the second all-trans mirror, the gain medium and the second output mirror are arranged in sequence along a laser optical path. The 2.9 mu m intermediate infrared solid-state laser based on the automatic Raman pump has the advantages of being good in stability, high in beam quality and high in output power and efficiency. The 2.9 mu m intermediate infrared solid-state laser based on the automatic Raman pump can be applied in fields such as laser ranging, laser remote sensing, laser imaging, photoelectricity confrontation, medical diagnosis and treatment, material processing, optical signal processing, data processing and the like.

Description

technical field [0001] The invention relates to a mid-infrared solid-state laser, in particular to a 2.9 μm mid-infrared solid-state laser based on self-Raman pumping. Background technique [0002] Mid-infrared lasers are widely used in laser ranging, laser remote sensing, laser imaging, photoelectric countermeasures, medical diagnosis and treatment, material processing, optical signal processing, data processing and other fields. In some fields, high peak power, high beam quality, high repetition rate and narrow linewidth are required. Compared with other types of lasers, solid-state lasers are easier to meet the above requirements, and can be made into light-weight, compact, and high-efficiency devices, which can meet the requirements of technical indicators in various fields. [0003] Scholars at home and abroad have done a lot of theoretical and practical work on mid-infrared lasers, but the technology for generating 2.9 μm lasers is not yet mature. The only way to obt...

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Problems solved by technology

The only way to obtain 2.9μm laser is to use 1150μm LD to pump Ho 3+ 、Pr 3+ Co-doped optical fiber, but this method will bring a large loss, greatly reducing the overall efficiency of the laser, the structure is relatively complicated, and the cost is relatively high

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