Optical fiber laser based on broadband spectrum

Abstract

The invention relates to an optical fiber laser based on broad-band spectrum, which comprises a high-reflection coating plated reflection cavity mirror, a pumping source, an optical coupling device and a gain optical part reflection resonant device, wherein the optical fiber laser based on broad-band spectrum forms broadband laser to be output through a pair of broadband reflection resonant cavities, and the broadband laser is used as a seed laser for amplifying an optical fiber. The optical fiber laser based on broad-band spectrum disclosed by the invention has the characteristics of being low in threshold value and easy to pair, and efficiently inhibits nonlinear effect in the optical fiber, so that the single pulse energy and peak power of a pulse optical fiber laser are obviously promoted, and the stability of output power of the optical fiber laser is improved.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a fiber laser based on broadband spectrum. Background technique [0002] Nowadays, research on fiber lasers has gradually become the focus of many scientists. How to increase the single pulse energy and peak power of the fiber laser while stabilizing the output power of the fiber laser through effective technical means, and how to effectively suppress the nonlinear effect in the fiber has become the focus of research at home and abroad. In 1991, "optics letters" reported an article entitled "Narrow-linewidth stimulated Brillouin fiber laser and applications". The article introduced the stimulated Brillouin effect of narrow linewidth fiber lasers. Corresponding research has been done on the nonlinear effect, but the research results have not given a detailed and sufficient explanation for the key technical difficulty of how to suppress the nonlinear effect through effective method...

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Problems solved by technology

In 1991, "optics letters" reported an article entitled "Narrow-linewidth stimulated Brillouin fiber laser and applications". The article introduced the stimulated Brillouin effect of narrow linewidth fiber lasers. Corresponding research has been done on nonlinear effects, but the research results have not given a detailed and sufficient explanation for the key technical difficulty of how to suppress nonlinear effects through effective methods

In 2003, applying for patent number CN200310109997.6, Changchun Institute of Optics and Mechanics published a patent titled "High Power, Narrow Linewidth Double-clad Fiber Laser and Manufacturing Method" to achieve narrow-band output, but this method is difficult to suppress non- linear effect

Traditional fiber laser seed sources are usually composed of narrow-band reflective resonators, which are prone to nonlinear effects. However, the single-pulse energy and peak power of fiber lasers composed of narrow-band reflective resonators and pulsed fiber lasers are limited, making the output power of fiber lasers The stability is low, and the resonant cavity formed is difficult to pair

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