Investigation on gas medium parameters for an ArF excimer laser through orthogonal experimental design
2018
Due to complex kinetics of formation and loss mechanisms, such as ion-ion recombination reaction, neutral species
harpoon reaction, excited state quenching and photon absorption, as well as their interactions, the performance behavior of different laser gas medium parameters for
excimer laservaries greatly. Therefore, the effects of gas composition and total gas pressure on
excimer laserperformance attract continual research studies. In this work, orthogonal experimental design (OED) is used to investigate quantitative and qualitative correlations between output laser energy characteristics and gas medium parameters for an ArF
excimer laserwith plano-plano optical resonator operation. Optimized output laser energy with good pulse to pulse stability can be obtained effectively by proper selection of the gas medium parameters, which makes the most of the ArF
excimer laserdevice. Simple and efficient method for gas medium optimization is proposed and demonstrated experimentally, which provides a global and systematic solution. By detailed statistical analysis, the significance sequence of relevant parameter factors and the optimized composition for gas medium parameters are obtained. Compared with conventional route of varying single gas parameter factor sequentially, this paper presents a more comprehensive way of considering multivariables simultaneously, which seems promising in striking an appropriate balance among various complicated parameters for power scaling study of an
excimer laser.
Keywords:
-
Correction
-
Source
-
Cite
-
Save
0
References
0
Citations
NaN
KQI