Hannover 2016 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 5: Posters I
MS 5.2: Poster
Tuesday, March 1, 2016, 16:30–19:00, Empore Lichthof
Design of a grating Ti:Sapphire laser with computer controlled wavelength tuning and intra-cavity second harmonic generation for resonant ionization — Vincent Degner1,2, •Pascal Naubereit2, Daiki Matsui1, Takahide Takamatsu1, Atsushi Nakamura1, Kousuke Saito1, Ryohei Ohtake1, Volker Sonnenschein1, Tomita Hideki1, Tetsuo Iguchi1, and Klaus Wendt2 — 1Department of Quantum Engineering, Nagoya University, Japan — 2Institut für Physik, University of Mainz, Germany
Tunable lasers with spectrally well controlled, high power output are desirable for inducing a variety of resonant atom-photon interactions. A specific technique serving a broad range of applications is multi-step Resonance Ionization Mass Spectrometry (RIMS). In this field, pulsed high repetition rate Ti:Sapphire (Ti:Sa) lasers are used due to their reliable long term operation and large tuning range from 680 to 1000 nm. Conventional wavelength selection based on birefringent filters and etalons does not allow for wide range mode-hop free tuning as needed for atomic spectroscopy. Therefore, a motorized grating Ti:Sa laser with computer controlled wavelength tuning and synchronized tracking of intra-cavity second harmonic generation (ic-SHG) is currently being developed. Merits of ic-SHG are wide coverage of the blue spectral range and high conversion efficiency combined with a compact setup. Application of this laser design in RIMS will simplify the search for new ionization schemes and enable fast exchange between different ionization schemes for multi-elemental analysis. Both the development and the first characterization of this laser system is discussed.