Analytical study on the steady-state thermal blooming effect of high-power ytterbium-doped fiber lasers propagating through the atmosphere
Optics Express, ISSN: 1094-4087, Vol: 31, Issue: 9, Page: 13640-13653
2023
- 4Citations
- 2Captures
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Article Description
Thermal blooming effect is one of the significant factors affecting the propagation performance of high-power ytterbium-doped fiber lasers (YDFLs) in the atmosphere. In this paper, two 20 kW YDFL systems with typical wavelengths (1070 nm and 1080 nm) are fabricated for propagation comparison experiments, which are used to investigate the thermal blooming effect induced by high-power YDFL propagation through the atmosphere. Under approximately the same laser system parameters (except wavelength) and atmospheric environment, the 1070 nm laser has better propagation characteristics than the 1080 nm laser. Due to the combined effect between the different central wavelengths of the two fiber lasers and the spectral broadening caused by output power scaling, the thermal blooming caused by the different absorptivity of water vapor molecules to the two fiber lasers is the main factor for the variation of the propagation properties. Through theoretical analysis and numerical calculation of factors affecting the thermal blooming effect, and considering the industrial manufacturing difficulty of YDFLs, a reasonable selection of fiber laser parameters can effectively improve atmospheric propagation performance and reduce manufacturing costs.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85158066543&origin=inward; http://dx.doi.org/10.1364/oe.487681; http://www.ncbi.nlm.nih.gov/pubmed/37157247; https://opg.optica.org/abstract.cfm?URI=oe-31-9-13640; https://dx.doi.org/10.1364/oe.487681; https://opg.optica.org/oe/fulltext.cfm?uri=oe-31-9-13640&id=529010
Optica Publishing Group
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