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High-power high-efficiency supercontinuum source

A supercontinuum light source and supercontinuum technology, which is applied in the field of fiber lasers, can solve problems such as unfavorable applications and reduce system stability, and achieve the effects of reducing system costs, high average output power, and facilitating industrial production and application.

Inactive Publication Date: 2013-04-03
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It has been documented that high-efficiency supercontinuum generation can be achieved by using a normal dispersion pumping mechanism, but the all-fiber structure was not used in the experiment, which reduces the stability of the system and is not conducive to practical applications

Method used

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specific Embodiment 3

[0029] The third specific embodiment is that the pump source uses an erbium-doped fiber laser with a working wavelength of about 1.5-1.6 microns, and the substrate of the photonic crystal fiber adopts a ZBLAN material with a zero dispersion point near 1.62 microns.

specific Embodiment 4

[0030] Specific embodiment four is that the pump source uses a thulium-doped or holmium-doped fiber laser with a working wavelength of about 2 microns, and the substrate of the photonic crystal fiber adopts SF57 material with a zero dispersion point near 2 microns.

specific Embodiment 5

[0031] The fifth embodiment is that the pump source adopts a thulium-doped or holmium-doped fiber laser with a working wavelength of about 2 microns, and the base material of the photonic crystal fiber adopts a Bi material with a zero dispersion point near 2.29 microns.

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Abstract

The invention provides a high-power high-efficiency supercontinuum source. By reasonably designing characteristics of photonic crystal fibers, long-pulse pump laser (picosecond, nanosecond laser) acts on a normal dispersion area for the photonic crystal fibers, the central wavelengths of stimulated front stages of Raman-Stokes peaks are positioned in an abnormal dispersion area close to a zero dispersion point of the photonic crystal fibers, and the stimulated Raman-Stokes laser peaks serve as a new pump source for stimulating supercontinuum and meet the requirement of an abnormal dispersion pump mechanism. The supercontinuum source simultaneously has the advantages of a normal dispersion pump mechanism and the abnormal dispersion pump mechanism, and high average output power and continuum output with high optical conversion efficiency and a wider supercontinuum range can be realized. By the aid of mature high-power fiber laser technology, photonic crystal fiber manufacturing technology and photonic crystal fiber post-treatment technology, system cost is reduced, and industrial production and application are facilitated.

Description

technical field [0001] The invention relates to the field of fiber laser technology, in particular to an all-fiber supercontinuum light source capable of achieving high average output power, high optical conversion efficiency and relatively wide output spectrum. Background technique [0002] Photonic crystal fibers can meet the high nonlinearity required for supercontinuum generation and have flexible dispersion characteristics. Using photonic crystal fibers can generate supercontinuum with excellent performance. To evaluate a supercontinuum light source, there are many indicators: the range of the supercontinuum, the flatness of the supercontinuum, the average output power of the supercontinuum, the spectral power density of the supercontinuum, the coherence of the supercontinuum, the supercontinuum output beam quality, etc. Different application fields will also focus on the performance requirements of supercontinuum light sources. At present, there have been authorized ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067G02B6/02G02F1/35
Inventor 谌鸿伟靳爱军郭良侯静陈胜平陈子伦陆启生
Owner NAT UNIV OF DEFENSE TECH
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