Berlin 2001 – wissenschaftliches Programm
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Q: Quantenoptik
Q 31: Poster: Laser
Q 31.14: Poster
Freitag, 6. April 2001, 12:30–15:00, AT2
Design and Characterization of a High Repetition Rate nanosecond Ti:Sapphire-Laser — •R. Horn1, G. Huber2, J.V. Kratz1, J. Lassen2, N. Trautmann1, and K. Wendt2 — 1Institut für Kernchemie, Universität Mainz, 55099 Mainz, Germany — 2Institut für Physik, Universität Mainz, 55099 Mainz, Germany
For the ultra trace analysis of actinides with resonant laser ionization mass spectrometry our group in Mainz is using a system of 3 tunable specially built Ti:Sa lasers, pumped with a commercial 50 W high repetition rate Nd:YAG laser at λ = 532 nm. The laser pulses of the Ti:Sa lasers with durations below 150 ns exhibit a spectral width of 2-6 GHz. We present here the development of a new compact Ti:Sa laser with improved pulse length and line width. The basic Z-shaped resonator has been tested with various pump lasers with different pump pulse length and transversal mode structure (1.2 < M2 < 15) and also with a cw pump laser. Laser threshold, quantum efficiency and pulse length have been investigated. Using our standard high repetition rate Nd:YAG laser we have studied the line width in a configuration using a 3 plate birefringent filter together with a solid Fabry Perot etalon and also in a set up with injection seeding using a single mode diode laser.