High-power blue-light fiber laser

Abstract

The invention discloses a high-power blue optical fiber laser, which contains front end input coupling device, wherein the first optical fiber device is set behind the front end input coupling device; the first optical fiber device, multiple frequency device and second optical fiber device connect to form resonant cavity through optical fiber; the resonant cavity is changed into activating cavity excited by double-end pump of front end input coupling device and rear end pump device; the laser working material is fiber core material of optical fiber system double-layer optical fiber, which outputs high-power blue laser through output aligning lens after realizing cavity multiple frequency. The invention improves switching efficiency, which is applied in the laser reserving, image display, laser TV and seawater communication domains widely.

Description

technical field [0001] The invention relates to a double-clad fiber laser, in particular to a high-power, high-efficiency blue laser fiber laser. Background technique [0002] In recent years, with the maturity of cladding pumping technology, double-clad fiber lasers have developed rapidly due to their advantages of high conversion efficiency, good output quality, compact structure and easy integration. With its small size, high output power, and good beam quality, fiber lasers can be used as ideal red, green, and blue primary color laser sources in laser projection, laser TV, and other fields, and their application prospects are very bright. Nowadays, green fiber lasers have achieved high power output. At present, the development bottleneck in this field is mainly blue fiber lasers that can produce high power levels. In the past, blue fiber laser output was generated by activating nonlinear effects such as up-conversion of fibers. , but its output power is low, usually on ...

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Problems solved by technology

Nowadays, green fiber lasers have achieved high power output. At present, the development bottleneck in this field is mainly blue fiber lasers that can produce high power levels. In the past, blue fiber laser output was generated by activating nonlinear effects such as up-conversion of fibers. , but its output power is low, usually on the order of milliwatts and the conversion efficiency is low, which limits its application range. Other solutions such as solid-state lasers or semiconductor lasers to generate blue light have inherent defects such as bulky laser devices, low efficiency, and high cost. It cannot be widely used in projection display, laser TV, seawater communication and other fields that require small blue light source

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