Status report of the Asterix IV high-power iodine laser

H. Baumhacker; Guenter Brederlow; Ernst E. Fill; H. Schillinger; Christian Schroedter; Reinhard Volk; Siegbert Witkowski; Klaus-Juergen Witte

doi:10.1117/12.144503

23 April 1993 Status report of the Asterix IV high-power iodine laser

H. Baumhacker, Guenter Brederlow, Ernst E. Fill, H. Schillinger, Christian Schroedter, Reinhard Volk, Siegbert Witkowski, Klaus-Juergen Witte

Author Affiliations +

Proceedings Volume 1980, Iodine Lasers and Applications; (1993) https://doi.org/10.1117/12.144503
Event: Iodine Lasers and Applications, 1992, Bechyne Castle, Czechoslovakia

Abstract

The Asterix IV high power iodine laser was projected to deliver output pulse energies of up to 2 kJ at pulse lengths t_p >= 1 ns in one beam. Using a mode-locked or a long-pulse oscillator the pulse duration can be adjusted in the range between 0.1 and 3 ns. In addition, in the fundamental wavelength at 1315 nm the laser can be operated at either the second or third harmonic at (lambda) equals 658 nm and (lambda) equals 438 nm, respectively. Up to now a maximum output energy of 1.3 kJ could be extracted which was -- at t_p equals 0.4 ns -- limited only by the damage threshold of optical components. Emphasis has been put on improving the laser performance; e.g., the energy density of the top hat beam profile shows a modulation as small as +/- 6% and the output pulse energy can be kept stable within +/- 4% during a period of several months. Since 1988 the laser has been used for 3000 target shots and it has proved a reliable tool.

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H. Baumhacker, Guenter Brederlow, Ernst E. Fill, H. Schillinger, Christian Schroedter, Reinhard Volk, Siegbert Witkowski, and Klaus-Juergen Witte "Status report of the Asterix IV high-power iodine laser", Proc. SPIE 1980, Iodine Lasers and Applications, (23 April 1993); https://doi.org/10.1117/12.144503

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