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Axial pumped traveling-wave amplified liquid-core fiber laser

A liquid-core optical fiber and pump laser technology, applied in the laser field, can solve problems such as low conversion efficiency, high laser energy loss, and radiation wavelength drift, and achieve high conversion efficiency, stable frequency, and low laser energy loss.

Inactive Publication Date: 2015-09-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high laser energy loss, low conversion efficiency, unstable frequency of stimulated radiation and radiation wavelength drift of dye lasers

Method used

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  • Axial pumped traveling-wave amplified liquid-core fiber laser
  • Axial pumped traveling-wave amplified liquid-core fiber laser
  • Axial pumped traveling-wave amplified liquid-core fiber laser

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Such as figure 1 As shown, the axially pumped traveling wave amplified liquid core fiber laser in this embodiment is composed of a pumping laser light source 1, an external optical path aperture diaphragm 2, a coupling lens 6, a liquid core fiber 3, and a transmission grating 4; After the pump laser light source 1 emits the pump laser light, the fundamental mode laser is obtained through the small hole diaphragm 2 of the external optical path, and the fundamental mode laser is coupled to the liquid core fiber 3 by the coupling lens 6 to obtain tunable stimulated Raman radiation output, and finally through The transmission grating 4 with a line density of 600-700 is subjected to spectroscopic processing to complete the laser output process. Wherein, the liquid core optical fiber 3 is filled with an organic liquid having a higher refractive index than quartz in which a fluorescent dye is dissolved. The fluorescent dye is trans-lycopene.

Embodiment 2

[0016] Such as figure 2 As shown, the axially pumped traveling wave amplified liquid core fiber laser in this embodiment is composed of a pumping laser light source 1, a small hole diaphragm 2 in the outer optical path, a coupling lens 6, a liquid core fiber 3, and a large refractive index prism 5; After the pump laser light is emitted from the pump laser light source 1, the fundamental mode laser is obtained through the small hole diaphragm 2 of the external optical path, and the fundamental mode laser is coupled to the liquid core fiber 3 by the coupling lens 6 to obtain tunable stimulated Raman radiation output. Finally, the laser output process is completed after the prism 5 with a refractive index above 1.70 is used for spectroscopic processing. Wherein, the liquid core optical fiber 3 is filled with an organic liquid having a higher refractive index than quartz in which a fluorescent dye is dissolved. The fluorescent dye is a combination of trans-lycopene and cis-lycop...

Embodiment 3

[0018] The large refractive index prism 5 and the transmission grating 4 in Embodiment 1 and Embodiment 2 can be used in combination to enhance the light splitting effect. image 3 It is a schematic diagram of one of the combination methods. After the pump laser light source 1 emits the pump laser light, the fundamental mode laser is obtained through the pinhole diaphragm 2 of the external optical path, and the fundamental mode laser is coupled to the liquid core fiber 3 by the coupling lens 6 to obtain The tunable stimulated Raman radiation output is finally processed by the transmission grating 4 and the prism 5 with a refractive index above 1.70 to complete the laser output process.

[0019] In the present invention, the coupling lens can adopt a lens coated with a 532nm anti-reflection film to enhance the transmittance of the laser light and improve the technical effect.

[0020] The invention combines the advantages of the coaxial pumping of the dye laser, maximizes the c...

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Abstract

The invention, which belongs to the technical field of the laser, provides an axial pumped traveling-wave amplified liquid-core fiber laser. In order to overcome defects of high laser energy loss and low conversion efficiency of the existing dye laser as well as problems of unstable simulated radiation frequency and radiation wavelength drift existence, the invention designs the provided fiber laser that enables axial pumped laser to be coupled with strokes and anti-strokes light by using a liquid fiber and uses a fluorescent dye molecule as a fluorescent seed to be mixed with a core operation material of the liquid core fiber so as to enhance simulated raman radiation. According to the invention, after pumped laser is emitted by a pumped laser source, base-mode laser is obtained by an external light-path aperture diaphragm; the base-mode laser is coupled to the liquid core fiber by using a coupling lens, thereby obtaining a tunable simulated raman radiation output; and then light splitting processing is carried out by using a transmission grating and / or a high-refraction-index prism, thereby completing a laser output process.

Description

technical field [0001] The invention belongs to the field of laser technology. Background technique [0002] The modern precision processing industry and the teaching and scientific research of colleges and universities have a wide range of needs for tunable laser light sources, and the characteristics of multi-wavelength and replaceable core working materials of axially pumped traveling wave amplified liquid core fiber lasers are in line with the needs of the market. demand. However, ordinary dye lasers have the disadvantages of high laser energy loss and low conversion efficiency. Moreover, the frequency of the stimulated radiation of the existing dye laser is unstable, and there is radiation wavelength drift. Contents of the invention [0003] The purpose of the invention is to solve the problems of high laser energy loss, low conversion efficiency, unstable frequency of stimulated radiation and radiation wavelength drift of dye lasers. [0004] The present invention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/30H01S3/213
Inventor 孙成林李业秋门志伟何丽桥
Owner JILIN UNIV