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5 September 2002 Resonator effects of the third continuum of argon at 240 nm
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In our experiment, the continuum, which is from 200nm to 300nm and centers at 240nm, is obtained by electron beam pumping argon. With the rear mirror, its small signal gain has been measured. Base on the experimental results, the resonator effects are observed at 240nm. When the resonator is formed, the intensity near 240nm increases more than 10 times. In the theory, the kinetic model on electron beam pumping argon is analyzed. The maximum number density of Ar2+ is 1.142x1015cm3. Based on the number density, the optical gain coefficient is very small, 0.025cm-1. These theoretical results are verified by the measurement of small signal gain coefficients and resonator effects.
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Yongpeng Zhao, Wang Qi, and Jincheng Liu "Resonator effects of the third continuum of argon at 240 nm", Proc. SPIE 4914, High-Power Lasers and Applications II, (5 September 2002);

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