Prepulse dependence ofJ=0−1 lasing at 32.6 nm in neon-like titanium |
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Authors: | A. R. Prüg A. Glinz J. E. Balmer Y. Li E. E. Fill |
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Affiliation: | (1) Institute of Applied Physics, University of Berne, CH-3012 Berne, Switzerland;(2) Max-Planck-Institut-für Quantenoptik, D-85748 Garching, Germany;(3) Present address: Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800-211, 201800 Shanghai, People's Republic of China |
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Abstract: | The dependence of the intensity of the 3p—3s,J = 0–1 lasing line at 32.6 nm in neon-like titanium on the prepulse level has been investigated experimentally. Titanium slabs were irradiated with 1.315 µm/450 ps pulses from the Asterix IV iodine laser using a defined prepulse of 5.2 ns before the main pulse. It is found that for pump energies close to the minimum energy for which lasing is observed, a prepulse level of order 0.5% gives the highest XUV laser intensity, whereas a higher prepulse level, of order 10% and more, is required for optimum XUV lasing far above the threshold. For a 2.7 cm long titanium target lasing was observed down to a pump irradiance of 2.5 TW/cm2 (50 J/450 ps) for the 0.5% prepulse. |
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Keywords: | 42.60.By 32.30.Rj 52.50Jm |
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