A high-power fiber laser generating device and method thereof
A fiber laser and generation device technology, applied in laser devices, lasers, laser parts and other directions to achieve high-power effects
Active Publication Date: 2021-02-12
TSINGHUA UNIV
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Problems solved by technology
[0004] However, the current fiber laser beam combining method has reached the bottleneck of the number of beam combining channels and power. The number of sub-beams that can be combined is tens of channels, and the spectral range of the sub-beams is within tens of nanometers. Only up to hundreds of kilowatts
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[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] Such as figure 1 As shown, the first embodiment of the present invention provides a high-power fiber laser generating device, including but not limited to the following structural components:
[0030] At least one fiber laser generating group; each fiber laser generating group includes a fiber laser 1, a grating 2 and a color mirror group 3 arranged in sequence ...
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Abstract
The present invention provides a high-power fiber laser generating device and method thereof, the device comprising: at least one fiber laser generating group; each fiber laser generating group is composed of a fiber laser, a grating and a color mirror group arranged in sequence on the optical path; There are multiple lasers, which are selected according to the method of selecting one every preset wavelength interval within the preset center wavelength range, and each laser beam is parallel; the grating is used to combine the laser beams to generate a first-level beam ; The color mirror group is used to combine all primary beams into a high-power fiber laser. In this embodiment, the spectral band of the laser sub-beam is expanded step by step through Raman gain, which greatly increases the number of synthesis paths, and can expand the synthesized spectral range from less than 100 nanometers to hundreds of nanometers or even thousands of nanometers. The number of channels has been increased from the existing hundreds to hundreds or even thousands. When the power of the fiber laser sub-beam is fully increased, a very high-power composite beam can be created.
Description
technical field [0001] The present invention relates to the technical field of fiber lasers, and more particularly, to a high-power fiber laser generating device and method thereof. Background technique [0002] With the increasing application of fiber laser in civil industry, national defense industry, and medical industry, fiber laser technology has also developed rapidly in recent years, especially high-power polarization-maintaining fiber laser in aerospace, aviation, navigation, and industrial manufacturing technology. Various fields of the national economy such as communication and communication show unique advantages. [0003] At present, the reliable power of a single high-power fiber laser capable of mature and stable mass production has reached the kilowatt level. However, further increasing the power of the beam generated by a single fiber laser faces bottlenecks in many laser physics mechanisms. Therefore, beam combining has become the main technology research ...
Claims
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IPC IPC(8): H01S3/10H01S3/23H01S3/00H01S3/067
CPCH01S3/005H01S3/067H01S3/10H01S3/2383
Inventor 肖起榕巩马理闫平李丹田佳丁
Owner TSINGHUA UNIV