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Raman fiber laser with low quantum loss

A quantum and phosphorus-doped optical fiber technology, which is applied to lasers, phonon exciters, laser components, etc., can solve problems such as thermal cracking, thermal lens effect, thermal effect, etc., and achieve low quantum deficit, simple structure, and high power conversion efficiency Effect

Pending Publication Date: 2020-04-28
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the improvement of the output power of fiber lasers is restricted by factors such as quantum deficit and the brightness of the pump source.
[0003] Higher quantum deficits not only reduce the power conversion efficiency of fiber lasers, but also lead to severe thermal effects, which cause a series of problems such as thermally induced mode instability effects, thermal cracking, core melting, and thermal lensing effects, which in turn limit high-power Further advancements in fiber lasers

Method used

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  • Raman fiber laser with low quantum loss
  • Raman fiber laser with low quantum loss
  • Raman fiber laser with low quantum loss

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Embodiment 1

[0041]This embodiment provides a light processing component with low quantum deficit, such as figure 1 As shown, including: high reflective fiber Bragg grating 3, phosphorus-doped fiber 4 and low reflective fiber Bragg grating 5;

[0042] The two ends of the phosphor-doped fiber 4 are respectively provided with an input fiber 41 and an output fiber 42; the phosphor-doped fiber 4 is used to convert the light source into first-order Stokes light; the input fiber 41 and the output fiber 42 are ordinary Optical fiber for light source propagation;

[0043] One end of the high reflective fiber grating 3 is provided with an input end to connect with an external light source; the other end is fused with the input optical fiber 41 of the phosphorus-doped optical fiber 4 to form a fusion point 2, so that the light source generated by the external light source passes through the high The reflective optical fiber grating 3 enters the input optical fiber 41; the high reflective optical fi...

Embodiment 2

[0050] This embodiment provides a light processing component with low quantum deficit, such as Figure 4 As shown, including: high reflection optical fiber grating 3 and phosphorus-doped optical fiber 4;

[0051] The two ends of the phosphor-doped fiber 4 are respectively provided with an input fiber 41 and an output fiber 42; the phosphor-doped fiber 4 is used to convert the light source into first-order Stokes light; the input fiber 41 and the output fiber 42 are ordinary Optical fiber for light source propagation;

[0052] One end of the high reflective fiber grating 3 is provided with an input end to connect with an external light source; the other end is fused with the input optical fiber 41 of the phosphorus-doped optical fiber 4 to form a fusion point 2, so that the light source generated by the external light source passes through the high The reflective optical fiber grating 3 enters the input optical fiber 41; the high reflective optical fiber grating 3 is used to r...

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Abstract

The invention discloses a Raman fiber laser with low quantum loss. An optical processing assembly comprises a first reflection structure and a phosphorus-doped fiber. An input optical fiber and an output optical fiber are respectively arranged at two ends of the phosphorus-doped fiber; one end of the first reflection structure is provided with an input end so as to be connected with an external light source; the other end of the first reflecting structure is connected with an input fiber of the phosphorus-doped fiber, so that a light source generated by the external light source enters the input optical fiber through the first reflecting structure; the first reflecting structure is used for reflecting the reflected light source light again to enable the light source light to enter the phosphorus-doped fiber again, and finally first-order Stokes laser is output at the output end of the output fiber of the phosphorus-doped fiber; the laser comprises a pumping source and the assembly. Compared with the prior art, the Raman fiber laser provided by the invention is lower in quantum loss and higher in power conversion efficiency, and can be used for further improving the output power ofthe fiber laser.

Description

technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a low-quantum-deficit optical processing component and a Raman fiber laser. Background technique [0002] With the improvement of fiber manufacturing technology and the rapid development of high-brightness semiconductor laser diode pumping sources, the output power of fiber lasers (including single-beam fiber lasers and multi-beam fiber lasers) has been rapidly increased. At present, the output power of fiber lasers has exceeded 10,000 watts. However, the improvement of the output power of fiber lasers is restricted by factors such as quantum deficit and the brightness of the pump source. [0003] Higher quantum deficits not only reduce the power conversion efficiency of fiber lasers, but also lead to severe thermal effects, which cause a series of problems such as thermally induced mode instability effects, thermal cracking, core melting, and thermal lensing effects, which...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/108H01S3/30
CPCH01S3/06716H01S3/0675H01S3/1086H01S3/302
Inventor 许将明张扬叶俊宋家鑫马小雅姚天甫冷进勇肖虎张汉伟刘伟周朴
Owner NAT UNIV OF DEFENSE TECH