Characteristics of CW/pulse discharge for high power transverse flow CO<sub>2</sub> laser and its application

Hao Peng; Xiahui Tang; Fang Xia; Juan Liu; Youqing Wang

doi:10.1117/12.757222

4 January 2008 Characteristics of CW/pulse discharge for high power transverse flow CO₂ laser and its application

Hao Peng, Xiahui Tang, Fang Xia, Juan Liu, Youqing Wang

Proceedings Volume 6825, Lasers in Material Processing and Manufacturing III; 68251I (2008) https://doi.org/10.1117/12.757222
Event: Photonics Asia 2007, 2007, Beijing, China

Abstract

Aiming at the 3kW transverse flow CO₂ laser, a hybrid power system and its compatibility with pin-to-flat discharge structure has been studied in the paper, CW/pulse output laser has been obtained. The DC high voltage output consists of switching power supply and main transformer, and three-phase SCR power supply is replaced by switching power supply. The pulse parameters are frequency from 0Hz to 1kHz, duty ratio from 0% to 100%. The pulse waveform of discharge voltage and discharge current are measured. The results show that row resistances have been moved, pin resistances have been reduced to 10kΩ. When the pressure P is 8.45kPa, the highest efficiency of electric-photo conversion of laser is up to 14.8%.The laser output power can be modulated in the state of continuous and pulse at arrange of 3kW. Then particular laser cladding is performed on the airplane engine blade, the laser cladding crack produced in continuous state is solved, and the heat-affected zone of laser cladding is also narrowed.

Citation Download Citation

Hao Peng, Xiahui Tang, Fang Xia, Juan Liu, and Youqing Wang "Characteristics of CW/pulse discharge for high power transverse flow CO₂ laser and its application", Proc. SPIE 6825, Lasers in Material Processing and Manufacturing III, 68251I (4 January 2008); https://doi.org/10.1117/12.757222

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