Research on rectangular flat-topped beam based on double-cladding fiber

Juanjuan Yin; Jiaqi Bao; Yilin Tong; Kan Yu

doi:10.1117/12.2604871

13 December 2021 Research on rectangular flat-topped beam based on double-cladding fiber

Juanjuan Yin, Jiaqi Bao, Yilin Tong, Kan Yu

Proceedings Volume 12073, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced and Extreme Micro-Nano Manufacturing Technologies; 1207306 (2021) https://doi.org/10.1117/12.2604871
Event: Tenth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2021), 2021, Chengdu, China

Abstract

In order to improve manufacture quality and machining efficiency, this paper studies the technology of rectangular flat-topped beam. Flat-topped beam can effectively reduce the region of heat affected zone. Rectangular beam can reduce overlap rate. So, it is very important to convert the circular Gaussian beam to rectangular flat-topped beam. The fiber laser has been widely used to laser manufacture Industry at this present. The fiber has better coupling capability with laser spot. We choose double-cladding fiber to acquire uniform rectangular beam. Laser beam transmission model was created up with RP fiber power soft. We also make the model of the double-cladding fiber. When the Gaussian beam is transmitting along fiber, high-order mode lights appear and mixture with each other. Because the double-cladding fiber has central-dip profile index, the energy transfers from central to edge. The results show that the double-cladding fiber can be used to improve the uniformity of transmitting beam. When the shape of fiber core is rectangular and the chamfer is circle arc work, we can get rectangular uniformity beam.

Citation Download Citation

Juanjuan Yin, Jiaqi Bao, Yilin Tong, and Kan Yu "Research on rectangular flat-topped beam based on double-cladding fiber", Proc. SPIE 12073, 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced and Extreme Micro-Nano Manufacturing Technologies, 1207306 (13 December 2021); https://doi.org/10.1117/12.2604871

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