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Sunlight-based high-efficiency pumping single-frequency fiber laser

A fiber laser and single-frequency laser technology, which is applied to lasers, laser components, laser optical equipment, etc., can solve problems such as lack of single-frequency laser output characteristics, low power of pumped sunlight, and simple structure of concentrated sunlight. , to avoid thermal damage, high reliability and long service life

Pending Publication Date: 2019-12-06
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

However, the structure of the concentrated sunlight in the above patent is too simple, the power of the concentrated and coupled pumped sunlight is not high, and it does not have the characteristics of single-frequency laser output

Method used

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  • Sunlight-based high-efficiency pumping single-frequency fiber laser
  • Sunlight-based high-efficiency pumping single-frequency fiber laser

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Embodiment Construction

[0028] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings and specific examples. It should be noted that the protection scope of the present invention is not limited to the scope expressed in the examples.

[0029] Schematic diagram of the structure of the multimode fiber optic panel in the embodiment of the present invention, such as figure 1shown. 18 multi-mode pump optical fibers are tightly packed and fixed together to form a fiber panel and an array structure. The end face of the fiber panel is formed after grinding, polishing and coating. The multimode optical fiber panel used in this example has the same structure, the pigtail is 105 / 125 (that is, the core diameter is 105 μm, the cladding diameter is 125 μm, and the numerical aperture is 0.22). The 1000 nm band is highly transparent, with a transmittance of 99.9%, and highly reflective to other wavelengths, with a reflectance of 99.5%. The mu...

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Abstract

The invention discloses a sunlight-based high-efficiency pumping single-frequency fiber laser, which includes: a single-frequency laser seed source, a signal pumping combiner, a multimode fiber panel,a sunlight focusing lens, a high-gain fiber, an optical filter module, and an optical isolator. The laser, based on a seed source main oscillation power amplification and multimode cladding pumping scheme, firstly, by designing and optimizing the optical parameters of the high-gain fiber, provides the high-gain fiber with good absorption and energy conversion efficiency for sunlight; secondly, uses the sunlight focusing lens to focus the sunlight as a pumping source, uses the multimode fiber panel to efficiently couple the concentrated sunlight into the multimode fiber, and amplifies the power of the single-frequency signal light by the high-gain fiber, thereby achieving single-frequency fiber laser output based on sunlight high-efficiency pumping. The single-frequency fiber laser directly uses sunlight as a pumping source, and can be used in the fields of space-based gravitational wave detection, laser weapons, space lidar and the like.

Description

technical field [0001] The invention belongs to the technical field of fiber lasers, in particular to a high-efficiency pumping single-frequency fiber laser based on sunlight. Background technique [0002] Single-frequency fiber laser is an important branch of fiber laser technology that is developing rapidly and has distinctive features. Due to its ultra-narrow spectral linewidth and ultra-long coherence length, single-frequency fiber laser has important application prospects in the fields of fiber optic sensing, lidar, coherent beam combining, coherent communication, and gravitational wave detection. The solar pumping technology refers to directly using sunlight as the pumping source, which has the characteristics of less energy conversion links, high reliability, long service life and high energy conversion efficiency. It can play a role in space where sunlight is the main energy form. unique role. It has broad application prospects in various space applications involvi...

Claims

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Application Information

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IPC IPC(8): H01S3/0915H01S3/067H01S3/00
CPCH01S3/005H01S3/06716H01S3/0915
Inventor 杨昌盛徐善辉吴佳民赵齐来冯洲明杨中民
Owner SOUTH CHINA UNIV OF TECH
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