Fiber laser dual-pass pumped 1.2μm band range laser

Abstract

A fiber laser dual-pass pumped 1.2μm band laser, using Ho3+ laser crystal as the working material, 1.13μm‑1.20μm band fiber laser as the pump source, making the fiber pump doped with Ho3+ laser crystal in the 's' polarization direction Under the excitation of the pump light, the laser output in the 'p' polarization direction of the 1.2μm band is realized. The invention effectively separates the laser resonant cavity from the fiber laser pumping source when the wavelength of the pump light is very close to the wavelength of the laser, reduces the coating requirements of the resonant cavity mirror, improves the coating quality, and makes full use of the optical fiber pump The energy of Puguang is a new type of solid-state laser in the 1.2μm band with high beam quality, compact structure, safe work and wide application prospects. It has very important application value in medical, aviation and other fields.

Description

technical field [0001] The invention relates to a laser, in particular to a fiber laser dual-pass pumped 1.2 μm band range laser. Background technique [0002] Since the advent of lasers in the 1960s, with the rapid development of laser devices and the continuous advancement of laser technology, the scope of interaction between lasers and matter has also been continuously expanded. Lasers with different wavelength ranges play an important role in specific application objects and fields With its own unique advantages and functions, among them, the 1.2μm band range laser and its corresponding 550nm-600nm band range frequency doubled orange laser are used in laser sodium guide star, biomedicine, medical cosmetology, food and drug testing, laser display and high Resolution spectroscopy and other fields have a wide range of applications and demand prospects. At present, the laser output in the 1.2 μm band range mainly includes the following three methods: one is lamp-pumped or L...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned LD-pumped and lamp-pumped 1.2μm-band solid-state Raman lasers with obvious thermal effects and low output power, LD-pumped 1.2μm-band fiber lasers have wide output linewidth, large nonlinear effects, and 1.2μm-band semiconductor lasers. Larger, all-solid-state 1.2μm band laser coating process is difficult, etc., the present invention proposes a fiber laser dual-pass pumped 1.2μm band laser

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