1.7mum all-optical-fiber thulium-doped quartz optical-fiber laser based on two-directional pumping structure

A quartz fiber and laser technology, used in lasers, laser parts, phonon exciters, etc., can solve the problems of short gain fiber length, incomplete absorption of pump light, low doping concentration, etc., and achieve simple and compact structure. High pump light absorption efficiency and good stability

Inactive Publication Date: 2017-01-04
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to solve the technical problem of the existing 1.7 μm thulium-doped silica fiber laser due to the short length of the gain fiber and the low doping concentration, the technical problem of incomplete pump light absorption, the present invention provides a 1.7 μm all-fiber based on a bidirectional pumping structure Thulium-doped silica fiber laser

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  • 1.7mum all-optical-fiber thulium-doped quartz optical-fiber laser based on two-directional pumping structure
  • 1.7mum all-optical-fiber thulium-doped quartz optical-fiber laser based on two-directional pumping structure
  • 1.7mum all-optical-fiber thulium-doped quartz optical-fiber laser based on two-directional pumping structure

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Embodiment Construction

[0019] see figure 1 , the 1.7 μm all-fiber thulium-doped silica fiber laser structure based on the bidirectional pumping structure provided by the present invention includes a pump source 1, an isolator 2, a wavelength division multiplexer 3 (WDM), a thulium-doped silica fiber 4, a fiber Bragg Grating A 5, fiber Bragg grating B 6, fiber Bragg grating C 7, fiber jumper connector a 8, fiber jumper connector b 9 and filter 10; where the pump source 1 is welded to the isolator 2, and the wavelength division multiplexer The pumping arm, signal injection end and beam combining end of 3 respectively correspond to the fusion splice isolator 2, fiber Bragg grating A 5, and thulium-doped silica fiber 4; C 7. Fiber jumper head a 8 is welded; the other end of fiber Bragg grating A 5 is welded with fiber jumper head b 9.

[0020] The pumping source 1 can adopt the 1550nm erbium-doped fiber laser produced by IPG Laser Company, the maximum output power is 20W; the insertion loss of the opti...

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Abstract

The invention relates to an optical-fiber laser, in particular to a 1.7mum all-optical-fiber thulium-doped quartz optical-fiber laser based on a two-directional pumping structure. The 1.7mum all-optical-fiber thulium-doped quartz optical-fiber laser comprises a pumping source, an isolator and a laser resonance cavity, wherein the laser resonance cavity comprises an optical-fiber Bragg grating A, an optical-fiber Bragg grating B, an optical-fiber Bragg grating C, a wavelength division multiplexer and a thulium-doped quartz optical fiber. The 1.7mum all-optical-fiber thulium-doped quartz optical-fiber laser has the advantages that high-reflectivity optical-fiber grating at the wavelength position of the pumping source to reflect forward pumping light which cannot be completely absorbed back into the laser resonance cavity so as to form a simple and ingenious two-directional pumping structure. Due to the structure, the problem of low pumping-light absorbing efficiency caused by low doping concentration and short length of thulium-doped gain optical fiber can be effectively solved.

Description

technical field [0001] The invention relates to a fiber laser, in particular to a 1.7 μm all-fiber thulium-doped quartz fiber laser based on a bidirectional pumping structure. Background technique [0002] The emission spectrum of thulium-doped quartz fiber laser can cover the 1.65-2.1 μm band, but the research on it is mainly concentrated around the 2-micron band. In recent years, with the application of the 1.7 micron wave band being developed, people have gradually increased the research on the short wavelength region (1.65-1.75 μm) of thulium-doped silica fiber lasers. However, the reabsorption of short-wavelength signal light in the quasi-three-level system and the gain saturation effect at short wavelengths easily caused by ASE at the central wavelength of the fluorescence seriously hinder the short-wavelength laser output of thulium-doped silica fiber lasers. [0003] At present, the short-wavelength laser output is mainly realized by using a short-length low-doping ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/094
CPCH01S3/0675H01S3/094011
Inventor 郭海涛肖旭升彭波许彦涛陆敏
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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