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2.33-micrometer laser light source and all-fiber cascade narrow linewidth 4.66-micrometer fiber gas laser

A technology of gas laser and narrow line width, which is applied to gas laser components, lasers, laser components, etc., and can solve problems such as lack of laser light sources

Pending Publication Date: 2020-10-30
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention combines the characteristics of high damage threshold of fiber gas laser, simple and compact structure, long action distance and the absorption radiation transition of carbon monoxide gas molecules, overcomes the problem that the current fiber gas laser based on hollow fiber is not fully fiberized, and at the same time overcomes the problem of The problem of lack of 2.33μm fiber structure laser source for 4.66μm laser

Method used

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  • 2.33-micrometer laser light source and all-fiber cascade narrow linewidth 4.66-micrometer fiber gas laser
  • 2.33-micrometer laser light source and all-fiber cascade narrow linewidth 4.66-micrometer fiber gas laser
  • 2.33-micrometer laser light source and all-fiber cascade narrow linewidth 4.66-micrometer fiber gas laser

Examples

Experimental program
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Effect test

Embodiment 1

[0042] as attached image 3 As shown, this embodiment provides an all-fiber cascaded narrow-linewidth 4.66 μm fiber gas laser, including a pump source 1, an input solid-core fiber 2, a first-stage anti-resonance hollow-core fiber 6, a second-stage anti-resonance hollow fiber Core fiber 9 and output unit. The first-stage anti-resonance hollow-core fiber 6 and the second-stage anti-resonance hollow-core fiber 9 can be ice cream type anti-resonance hollow-core fibers or nodeless type anti-resonance hollow-core fibers. refer to figure 1 , figure 1 It is an electron micrograph of the cross-section of an ice cream-type anti-resonance hollow-core fiber. refer to figure 2 , 2 is the cross-sectional electron microscope image of the nodeless anti-resonance hollow-core fiber.

[0043] The pumping source 1 is a tunable narrow-linewidth laser light source in the 1.5 μm band, which is used to generate pumping laser light. The output end of the pumping source 1 is connected to an input...

Embodiment 2

[0049] This embodiment 2 provides an all-fiber cascade structure with a narrow linewidth of 4.66 μm fiber gas laser light source, including a pump source 1, an input solid-core fiber 2, a first-stage anti-resonance hollow-core fiber 6, and a second-stage anti-resonance Hollow-core optical fiber 9 and an output unit.

[0050] The difference between Embodiment 2 and Embodiment 1 lies in the implementation of the output unit. refer to Figure 4 , the output unit described in this embodiment is the output window 15 arranged on the third gas cavity 10, the output window 15 has a high transmittance to the 4.66 μm laser, and the output end of the second-stage anti-resonant hollow-core fiber 9 outputs 4.66 μm The μm laser is filtered and output through the output window 15 on the third gas cavity 10 .

Embodiment 3

[0052] Embodiment 3 provides an all-fiber cascaded fiber gas laser light source with a narrow linewidth of 4.66 μm, including a pump source 1, an input solid-core fiber 2, a first-stage anti-resonance hollow-core fiber 6, and a second-stage anti-resonance Hollow-core optical fiber 9 and an output unit.

[0053] The difference between Embodiment 3 and Embodiment 1 and Embodiment 2 lies in the implementation manner of the output unit. refer to Figure 5 In this embodiment, the output unit is a mid-infrared crystal end cap 16 sealed and fixed on the third gas cavity 10 . The mid-infrared crystal end cap 16 is spatially aligned with the output end of the second-stage anti-resonance hollow-core optical fiber 9 and sealed in the third gas chamber 10 . The 4.66 μm laser output from the second-stage anti-resonant hollow-core fiber 9 is coupled into the end cap 16 of the mid-infrared crystal, and finally collimated and output.

[0054] Figure 7 It is a schematic diagram of CO stimul...

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Abstract

The invention provides a 2.33-micrometer laser light source and an all-fiber cascade narrow linewidth 4.66-micrometer fiber gas laser. The laser comprises a pumping source, an input solid-core opticalfiber, a first-stage anti-resonance hollow-core optical fiber, a second-stage anti-resonance hollow-core optical fiber and an output unit. 1.5-micrometer waveband pumping laser interacts with carbonmonoxide gas loaded in a fiber core in the first-stage anti-resonance hollow-core optical fiber; 2.33-micrometer laser generated by stimulated radiation transition interacts with carbon monoxide gas loaded in the fiber core in the second-stage anti-resonance hollow-core optical fiber, and 4.66-micrometer laser is generated by stimulated radiation transition; and the output end of the second-stageanti-resonance hollow-core optical fiber realizes the output of 4.66-micrometer laser through the output unit. According to the invention, the 4.66-micrometer laser output is realized by utilizing thecharacteristic of absorption radiation transition of CO gas. The problem that an existing optical fiber gas laser based on a hollow-core optical fiber is not all-fiber is solved, and meanwhile, the problem that a 2.33-micrometer optical fiber structure laser light source for generating 4.66-micrometer laser is lacked is solved.

Description

technical field [0001] The invention belongs to the technical field of optical fiber laser, and in particular relates to an optical fiber gas laser light source with a mid-infrared narrow linewidth. Background technique [0002] The mid-infrared laser in the 3-5μm band is located in the transmission window of the atmosphere. It can be used in communications, biomedicine, and environmental monitoring in the civilian field, and it can be used in photoelectric countermeasures in the military. Missile tail flame detection, etc., have received extensive attention from scientists. [0003] As an important means of outputting portable, stable and efficient mid-infrared laser, fiber laser has good beam quality and compact structure, and has great development prospects in the field of mid-infrared lasers. At present, the dopant ions that produce mid-infrared are mainly Er 3 + 、Ho 3+ and Dy 3+ etc., but due to the self-termination effect of dopant ions, and the limited output wav...

Claims

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Application Information

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IPC IPC(8): H01S3/03H01S3/08H01S3/094H01S3/22
CPCH01S3/0315H01S3/08013H01S3/094042H01S3/2232
Inventor 王泽锋崔宇龙周智越黄威李昊李智贤王蒙陈子伦李霄陈金宝
Owner NAT UNIV OF DEFENSE TECH
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