Hannover 2010 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 18: Laser Development: Solid State Lasers II
Q 18.8: Vortrag
Dienstag, 9. März 2010, 15:45–16:00, F 128
A cryogenic Ti:sapphire single-pass amplifier for short pulses at high repetition rates — •Andreas Vernaleken1, Akira Ozawa1, Torsten Mans2, Peter Russbueldt2, Theodor W. Hänsch1, Peter Hommelhoff1, and Thomas Udem1 — 1Max-Planck-Institut für Quantenoptik, Garching — 2Fraunhofer-Institut für Lasertechnik, Aachen
Our group has demonstrated a phase-stable, cryogenically cooled Ti:sapphire single-pass amplifier [1]. We will review these initial experiments at pump powers of up to 18W. As the achievable gain in our experiments was ultimately limited by the available pump power, we are currently investigating the feasibility of using the frequency-doubled output of a recently developed pulsed Yb:YAG Innoslab high power amplifier [2] (500MHz repetition rate, 700fs pulse duration, 400W average power) at a wavelength of 515nm as a quasi-cw pump laser for our single-pass amplifier. To this end, we optimized both the length and the doping level of the Ti:sapphire crystal for the expected pump power (several tens of Watts) according to a numerical model [3]. We will present first results of our investigations with this new pulsed high power pump laser and discuss possible applications such as high harmonic generation and other highly non-linear effects at repetition rates on the order of 100MHz.
[1] Ozawa et al., New J. Phys. 11, 083029 (2009)
[2] Russbueldt et al., Opt. Express 17, 12230 (2009)
[3] Ozawa et al., in preparation