Square laser beam of high power transverse flow CO<sub>2</sub> laser and its application

Yingxiong Qin; Xiahui Tang; Rutao Zhong; Zhengjia Li

doi:10.1117/12.757416

4 January 2008 Square laser beam of high power transverse flow CO₂ laser and its application

Yingxiong Qin; Xiahui Tang; Rutao Zhong; Zhengjia Li;

Author Affiliations +

Proceedings Volume 6825, Lasers in Material Processing and Manufacturing III; 68250W (2008) https://doi.org/10.1117/12.757416
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

By means of the Collins formula and finite-element method, diffraction integral equation of the square resonator with spherical mirrors is transformed to the finite-element matrix equation, mode-fields of the square aperture resonator is calculated. Experiment with square aperture resonator is done on HUST2000 high power transverse flow CO₂ laser. The results show that a square multi-mode beam with uniform comparatively intensity appeares in near field distribution. Laser quenching on 45# steel is done by using the square multi-mode beam and general circle beam. The hardened case caused by the square multi-mode beam is more uniform than general circle beam.

Citation Download Citation

Yingxiong Qin, Xiahui Tang, Rutao Zhong, Zhengjia Li, "Square laser beam of high power transverse flow CO₂ laser and its application", Proc. SPIE 6825, Lasers in Material Processing and Manufacturing III, 68250W (4 January 2008); doi: 10.1117/12.757416; https://doi.org/10.1117/12.757416

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