Dresden 2011 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 21: Laserentwicklung: Festkörperlaser 2
Q 21.5: Talk
Tuesday, March 15, 2011, 11:30–11:45, SCH A215
Joule-level, room-temperature Yb:YAG and Yb:CaF2 lasers — •Markus Loeser1, Mathias Siebold1, Franziska Kroll1, Fabian Röser1, Jörg Körner2, Joachim Hein2, Ulrich Schramm1, and Roland Sauerbrey1 — 1Helmholtz-Centre Dresden Rossendorf, Bautzner Landstr. 400, 01328 Dresden, Germany — 2Institute for Optics and Quantum Electronics, Max-Wien-Platz 1, 07743 Jena, Germany
Compact diode-pumped solid-state laser systems are envisioned to be an efficient approach for the direct generation of ultrahigh peak laser intensities at a high average power. At the Helmholtz-Centre Dresden Rossendorf a fully diode-pumped Petawatt laser system called PEnELOPE (Petawatt, Energy Efficient Laser for Optical Plasma Experiments) with a pulse duration of 200 fs and a pulse energy of 200 J is planed to build. Here we present gain and efficiency measurements of a joule-level active mirror amplifier for the investigatin of the architecture of the main amplifier stages. A setup comprising of 4–16 extracting beams and a pump recovery configuration was employed in order to study the small-signal gain and the optical-to-optical conversion efficiency of an Ytterbium-doped amplifier using either Yb:YAG or Yb:CaF2. Both the pump and the laser beams were relay-imaged at each pass. For seeding an Yb:YAG Q-switched regenerative amplifier with an output energy of 300 µJ and a pulse duration of 6 ns was pre-amplified up to 100 mJ.