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20 May 2010 Broadband amplification at Kr2F trimer transition for short-pulse high-power laser applications
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The radiation amplification and oscillation are obtained in an electron-beam-pumped Berdysh laser with an active volume of 10 L in the visible range from 430 to 470 nm at the broadband 42Γ -1,2 2Γ transition in the triatomic Kr2F molecule of interest for amplification of ultrashort laser pulses. It is shown that, along with absorption of laser radiation in the active medium, the amplification dynamics is considerably determined by short-lived absorption induced in the amplifier windows by bremsstrahlung X-rays. For the specific pump power 0.6 ÷ 0.7MW cm-3, the gain, corrected for nonstationary absorption, was ~10-3 cm-1. A scheme of aKr2F amplifier is proposed for amplification of ultrashort pulses up to multiterawatt peak powers in the active volume ~10 L.
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Alexey O. Levchenko, Nikolai N. Ustinovskii, and Vladimir D. Zvorykin "Broadband amplification at Kr2F trimer transition for short-pulse high-power laser applications", Proc. SPIE 7721, Solid State Lasers and Amplifiers IV, and High-Power Lasers, 77211H (20 May 2010);

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