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4-micron waveband mid-infrared optical fiber amplifier based on chalcogenide gain optical fiber

A technology of gaining optical fiber and infrared light, which is applied in the direction of lasers, laser components, phonon exciters, etc., can solve the problem of low output power of laser light sources, and achieve the effects of improving pumping efficiency, good stability, and low transmission loss

Pending Publication Date: 2020-05-08
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] In order to solve the problem of low output power of the current 4 μm band laser light source, the present invention provides a 4 μm band mid-infrared fiber amplifier based on a chalcogenide gain fiber, which can significantly increase the output power of the laser light source in this band and greatly improve the output power of the laser light source in this band. practical value

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  • 4-micron waveband mid-infrared optical fiber amplifier based on chalcogenide gain optical fiber
  • 4-micron waveband mid-infrared optical fiber amplifier based on chalcogenide gain optical fiber
  • 4-micron waveband mid-infrared optical fiber amplifier based on chalcogenide gain optical fiber

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[0025] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0026] see figure 1 , a 4 μm band mid-infrared fiber amplifier based on a chalcogenide gain fiber provided in this embodiment, its specific structure is mainly composed of a signal source 1, a focusing lens 2, a Dy-doped chalcogenide glass fiber 3, a dichroic mirror 4, and a reflector 5. Composed of pumping source 6 and focusing lens 8. Among them, in the output optical path of the signal light, place the signal source 1, the focusing lens 2, the gain fiber 3, the focusing lens 8, and the dichromatic mirror 4 in sequence, the focusing lens and the optical path form a 90° direction, and the dichromatic mirror forms a 45° direction with the optical path; The pump light path is opposite to the signal light output light path, and the pump source 6 and the reflector 5 are placed in sequence, and the reflector and the light path form a 45° direction.

[0027] Th...

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Abstract

The invention relates to the field of fiber laser, in particular to a mid-infrared 4mu m fiber laser amplifier based on a Dy-doped chalcogenide glass fiber, which mainly structurally comprises a pumping source, a focusing lens, a Dy-doped chalcogenide glass fiber, a dichroic mirror, a reflector and a signal source. According to the 4-micron waveband intermediate infrared optical fiber amplifier based on the chalcogenide gain optical fiber, stable, high-gain, high-signal-to-noise-ratio and wavelength-continuously-adjustable 4-micron waveband amplified signal laser output is achieved, and the problem that the output power of a current 4-micron waveband laser light source is low is solved.

Description

technical field [0001] The invention relates to the field of optical fiber amplifiers, in particular to a 4 μm mid-infrared optical fiber amplifier based on a chalcogenide gain fiber. Background technique [0002] The 3-5 μm mid-infrared laser corresponds to the transmission window with the smallest attenuation in the atmosphere, and this band area covers many molecular characteristic absorption peaks, and has broad application prospects in many fields such as spectral analysis, atmospheric detection, space communication, and biochemical sensing. and market demand. The 4 μm band corresponds to CO 2 Due to its unique spectral characteristics and spectral position, lasers in this band have excellent application prospects in the fields of volcano monitoring, carbon cycle and greenhouse effect research, combustion diagnosis, and space photoelectric countermeasures. At present, the main technical methods that can achieve laser output in the 4μm band are mid-infrared quantum cas...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/094
CPCH01S3/067H01S3/06754H01S3/094003
Inventor 肖旭升郭海涛许彦涛
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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