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Optical fiber type tunable gas Raman laser light source based on hollow-core photonic crystal fiber

A hollow-core photonic crystal and Raman laser technology, applied in the optical field, can solve the problems of restricting miniaturized gas Raman lasers, complex pumping, high power consumption, etc., and achieve wide spectral coverage, flexible wavelength selection, and low threshold Effect

Active Publication Date: 2010-06-30
ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0003] But so far, most of the gas SRS effects based on HCPCF are pumped by high-power solid-state lasers or high-power double-clad fiber lasers. Man laser process

Method used

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  • Optical fiber type tunable gas Raman laser light source based on hollow-core photonic crystal fiber
  • Optical fiber type tunable gas Raman laser light source based on hollow-core photonic crystal fiber
  • Optical fiber type tunable gas Raman laser light source based on hollow-core photonic crystal fiber

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Embodiment Construction

[0019] see figure 1 :

[0020] A fiber-type tunable gas Raman laser source based on a hollow-core photonic crystal fiber is characterized in that: the excitation source 1 is connected to the inner high-pressure hydrogen (H 2 ) of the hollow-core photonic crystal fiber 3, and the hollow-core photonic crystal fiber 3 is connected to the single-mode fiber 4 as an output end.

[0021] The excitation source is a pulse-type tunable single-mode ytterbium-doped fiber laser, and the cavity mirror is composed of a Sagnac total reflection loop mirror 5 and a tunable fiber Bragg grating (Tunable FBG) 6, based on a 3dB coupler The formed Sagnac (Sagnac) total reflection loop mirror 5 is connected to the wavelength division multiplexing coupler 7, and the described pulse type tunable single-mode ytterbium-doped fiber laser also has a semiconductor laser 8, and the semiconductor laser 8 is connected to The wavelength division multiplexing coupler 7, the wavelength division multiplexing cou...

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Abstract

The invention discloses an optical fiber type tunable gas Raman laser light source based on hollow-core photonic crystal fiber, wherein a pulse-type tunable single mode Yb-doped fiber laser is used as the excitation source and is connected with one end of the hollow-core photonic crystal fiber filled with high pressure hydrogen (H2) through single mode fiber, and the other end of the hollow-core photonic crystal fiber is connected with the single mode fiber and is used as the output end. Compared with the traditional optical fiber laser, the invention has lower threshold, more flexible wavelength selection and wider spectral range, and can be used as an important means for expanding the wavelength of laser and can obtain the laser which can not be obtained by the conventional laser in some important wave bands.

Description

Technical field: [0001] The invention relates to the field of optical technology, in particular to a fiber-type tunable gas Raman laser light source based on a hollow-core photonic crystal fiber. Background technique: [0002] Gas Raman (Raman) laser plays an important role in nonlinear optics, laser spectroscopy, and high-precision trace gas detection. However, for low-density media such as gas, due to the low optical nonlinear coefficient, the threshold of the stimulated Raman scattering (SRS) effect of the substance is very high, and the excitation light power is extremely high; at the same time, the diffraction effect in the process of light wave transmission, etc. Influenced by factors, the effective interaction distance between light wave and gas is short in traditional methods, so it is difficult to observe the generation of Stokes light and Anti-Stokes light. In recent years, hollow-core photonic crystal fibers (HCPCFs) have been used as a platform for the nonlinear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/30H01S3/223H01S3/10H01S3/067H01S3/091H01S3/094H01S3/098H01S3/08H01S3/0941
Inventor 毛庆和孙青陈晓东
Owner ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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