Comprehensive Analysis of Thermal Lensing Effects on the Coaxial Resonator of a High Power RF-Excited CO2 Laser

被引：1
|
作者：
Granson, Viktor [1 ]
Villarreal, Francisco J. [1 ]
Deile, Jochen [1 ]
Monjardin, Jesus F. [1 ]
Sumrain, Shadi [1 ]
机构：
[1] TRUMPF Inc, Farmington, CT 06032 USA
来源：
LASER RESONATORS, MICRORESONATORS, AND BEAM CONTROL XIV | 2012年 / 8236卷
关键词：
CO2; laser; coaxial resonator; thermal lens; RF excited; diffusion cooled;
D O I：
10.1117/12.906888
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The influence of a variety of parameters, such as the gas composition, pressure and lateral variation of Joule heat release of the discharge at employed frequency, are taken into account to derive a distributed thermal lensing expression and to numerically calculate the focal length as a function of position within the inter-electrode gap. The process of widening of the beam inside the resonator is investigated by means of complex ray methodology. The findings are incorporated into the optimization process of the optical resonator in the stable direction and the impact on the beam quality and power stability is verified by experimental results.
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页数：7
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