Stuttgart 2012 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 54: Poster 3
Q 54.18: Poster
Donnerstag, 15. März 2012, 16:30–19:00, Poster.I+II
Efficient frequency doubling of laser light at 738 nm — •Thomas Collath1, Michael Johanning1, Ladislav Bohaty2, Petra Becker2, and Christof Wunderlich1 — 1Universität Siegen, Naturwissenschaftlich-Technische Fakultät, Dept. Physik, 57068 Siegen — 2Universität zu Köln, Institut für Kristallographie, 50939 Köln
For laser cooling and detection of ytterbium ions stored in a Paul trap, continuous-wave laser light with a wavelength of 369 nm is required. This light is generated with a titanium-sapphire laser at 738 nm and a frequency doubler. Two nonlinear optical crystals, bismuth triborate (BiB3O6) and β-barium borate (β-BaB2O4), are used for second-harmonic generation. A ring resonator in symmetric bow-tie configuration is used to achieve higher power densities. The parameters characterizing the resonator (focus diameter, optical length, reflectivity of the incoupling mirror) are optimally adjusted for each of the two nonlinear crystals and the results are compared.