Silicate full-glass optical fiber for high-power optical fiber laser

Abstract

The invention discloses a silicate full-glass optical fiber for a high-power optical fiber laser. The silicate full-glass optical fiber is characterized by being prepared by taking SiO4 as a main unit and adding alkaline metal oxide, alkaline earth metal oxide and rare earth oxide, wherein SiO4 has the structural groups same as those of silica optical fiber glass, and the alkaline metal oxide, the alkaline earth metal oxide and the rare earth oxide are capable of changing the physical and chemical properties of the glass. The components of silicate glass in the silicate full-glass optical fiber can be regulated within a relatively wide range to ensure that the numerical aperture between inner cladding glass and outer cladding glass of the optical fiber can also be within a relatively wide range, and the chemical durability can be generated, so that the environment corrosion can be effectively avoided. The silicate full-glass optical fiber can also be well welded together with the traditional silica optical fiber because of having the same main chemical structural unit with silica glass.

Description

technical field [0001] The invention relates to a glass matrix used for a high-power fiber laser, in particular to a silicate glass doped with rare earth, and belongs to the technical field of optical fiber and laser. Background technique [0002] Fiber laser is a laser with fiber doped with rare earth elements as the gain medium. By doping different rare earth elements, such as erbium (Er), ytterbium (Yb), thulium (Tm), holmium (Ho), neodymium (Nd), etc. , the working band of fiber laser covers from ultraviolet to mid-infrared. Compared with other lasers, fiber lasers have distinctive features such as low laser working threshold, high energy conversion rate, good output beam quality, compact and stable structure, no need for optical path adjustment, good heat dissipation performance, long life and no maintenance, etc., so it has been developed rapidly and widely used. [0003] Commercially available silica fibers can already output very high power. Its interior is mainly...

AI Technical Summary

Problems solved by technology

Due to the very different characteristics of glass and plastic, it brings many problems to its welding and application