Sunlight pumping optical fiber laser

Abstract

The invention provides a sunlight pumping optical fiber laser, belonging to the technical field of optical fiber lasers. The laser comprises a Fresnel lens, a condenser, a hollow-core optical fiber filter, a first resonant cavity, a second resonant cavity and a laser coupling output device, wherein the condenser, the hollow-core optical fiber filter, the first resonant cavity, the second resonant cavity and the laser coupling output device are connected in sequence, and a gain optical fiber is arranged between and connected with the first resonant cavity and the second resonant cavity. The Fresnel lens of the optical fiber laser can well collect sunlight, the condenser further collects the sunlight collected by the Fresnel lens, and the sunlight is focused and coupled into the hollow-core optical fiber filter, so the sunlight is fully utilized; and most of the sunlight is absorbed, so heat generated on the laser is little, and the laser is easy to dissipate heat.

Description

technical field [0001] The invention belongs to the technical field of fiber lasers, and relates to a sunlight-pumped fiber laser. Background technique [0002] As a kind of clean energy, sunlight is inexhaustible. At present, it has been realized to use sunlight to directly pump solid or gas to generate laser light. As early as 1963, the Radio Corporation of America developed a solar-pumped Dy 2+ : CaF 2 crystal laser. In 1976, using Nd 3+ : YAG crystal, pumped by sunlight, produces 5 watts of laser light. After decades of development, solar-pumped lasers have also made great progress. [0003] However, the current solar-pumped lasers have a huge volume of lasers, ranging from a few cubic meters to tens of cubic meters, ranging from tens of kilograms, or even hundreds of kilograms, which is relatively cumbersome. At the same time, since sunlight cannot be fully utilized, most of the sunlight that cannot be absorbed brings a lot of heat to the laser, and heat dissipat...

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Problems solved by technology

[0003] However, the current solar pump laser has a huge volume, ranging from a few cubic meters to tens of cubic meters, ranging from tens of kilograms, or even hundreds of kilograms, which is relatively cumbersome.

At the same time, because sunlight cannot be fully utilized, most of the sunlight that cannot be absorbed brings a lot of heat to the laser, and heat dissipation has become a major problem for solar-pumped lasers.

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