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All-fiber high-power middle- and far-infrared super-continuum spectrum light source

A supercontinuum light source and high-power technology, applied in the field of all-fiber high-power mid-to-far infrared supercontinuum light sources, can solve the problems of bulky pump source, lack of practicability, light source application limitations, etc., and simplify the fiber amplifier. , the output beam quality is good, the effect of improving the pumping efficiency

Inactive Publication Date: 2017-08-15
NINGBO UNIV
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Problems solved by technology

[0003] At present, the mid-to-far infrared SC spectrum laser source mainly uses an optical parametric oscillator (OPO) or an optical parametric amplifier (OPA) with high peak power to pump the chalcogenide fiber to achieve mid-to-far infrared SC spectrum output. The large size of the source greatly limits the application of the light source, and its output power is extremely low, generally limited to the order of microwatts, which is basically not practical

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  • All-fiber high-power middle- and far-infrared super-continuum spectrum light source

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specific Embodiment

[0023] An all-fiber high-power mid-to-far infrared supercontinuum light source, such as figure 1 As shown, it includes a thulium-doped fiber laser module 1 for generating high-repetition-frequency picosecond or femtosecond ultrashort pulses, a thulium-doped fiber amplifier module 2 for generating high-power high-order soliton pulses, and a A first SC spectrum generation module 3 for generating 2-4 μm high-power SC spectrum laser and a second SC spectrum generation module 4 for generating 2-14 μm high-power SC spectrum.

[0024] The above-mentioned thulium-doped mode-locked fiber laser module 1 uses a thulium-doped picosecond or femtosecond pulsed fiber laser based on semiconductor saturable absorbing mirror (SESAM) mode-locking, such as figure 1 As shown, its structure is: a WDM wavelength division multiplexer 1-2 used to inject pump light 1-1 connected end to end in sequence, a first gain fiber 1-3 used to provide amplification, and a single fiber used to output laser light ...

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Abstract

The invention discloses an all-fiber high-power middle- and far-infrared super-continuum spectrum light source. The all-fiber high-power middle- and far-infrared super-continuum spectrum light source is characterized by comprising a thulium doped mode-locking fiber laser module, a thulium doped fiber amplification module, a first super-continuum (SC) spectrum generation module and a second SC spectrum generation module which are sequentially arranged, wherein the thulium doped mode-locking fiber laser module is used for generating a high-repeated frequency ultrashot pulse picoseconds or femtosecond, the thulium doped fiber amplification module is used for generating a high-power and high-order soliton pulse, the first SC spectrum generation module is used for generating high-power SC spectrum laser of 2-5 micrometers, the second SC spectrum generation module is used for generating high-power SC spectrum laser of 2-14 micrometers, and the thulium doped mode-locking fiber laser module, the thulium doped fiber amplification module, the first SC spectrum generation module and the second SC spectrum generation module all employ single-mode fibers. The all-fiber high-power middle- and far-infrared super-continuum spectrum light source has the advantages of low cost, high conversion efficiency, good output beam quality, wide bandwidth, simple and compact structure and high adaptive capacity to an environment.

Description

technical field [0001] The invention relates to the technical field of laser optoelectronics, in particular to an all-fiber high-power mid-to-far infrared supercontinuum light source. Background technique [0002] According to the division of atmospheric light transmission, the atmospheric window is mainly divided into visible light and near-infrared bands (0.3-1.3 μm, 1.5-1.8 μm), mid-infrared bands (3.5-5.5 μm), far-infrared bands (8-14 μm) and microwave bands (0.8~2.5cm), etc. The infrared band located in the long-wave direction of the visible vision of the human eye has special military and civilian values. In particular, the mid-to-far infrared band is not only the atmospheric window with the smallest attenuation, but also covers the absorption peaks of many atoms and molecules. The "fingerprint" identification area is also the light wave spectrum area corresponding to the black body radiation of room temperature or high temperature objects. Therefore, light sources i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/067H01S3/094H01S3/11
CPCH01S3/067H01S3/094042H01S3/1106
Inventor 李杏聂秋华戴世勋王训四张培晴吴越豪王国祥刘自军
Owner NINGBO UNIV
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