Stuttgart 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 18: Laserentwicklung: Festkörperlaser
Q 18.1: Vortrag
Montag, 12. März 2012, 16:30–16:45, V38.01
Power scaling of an all-solid-state laser source for trapping lithium — •Andrea Bergschneider, Ulrich Eismann, Frédéric Chevy, and Christophe Salomon — Laboratoire Kastler Brossel, CNRS UMR 8552, UPMC, Ecole Normale Supérieure, 24 rue Lhomond, 75231 Paris, France
We recently presented an all-solid-state laser source emitting 670 mW of narrowband 671-nm light, frequency-locked to the lithium D-line transitions for laser cooling applications [1]. It consists of a solid-state Nd:YVO4 ring laser emitting light of 1342 nm wavelength, which is subsequently frequency-doubled in an enhancement cavity using periodically-polarized potassium titanyl phosphate (ppKTP).
Here, we focus on the challenge of increasing the output power into the multi-Watt range. The key issue is the minimization of unavoidable detrimental thermal effects in the Nd:YVO4 and the nonlinear crystal. We discuss in detail the theoretical optimization of the spatial overlap between pump beam and cavity mode [2] with respect to the pump beam wavelength and size as well as the crystal doping and length, and compare to our experimental results. We also investigate intra-cavity second harmonic generation.
[1] U. Eismann et al., arXiv:1103.5841 (2011)
[2] Y. F. Chen et al., IEEE J. Quantum Electron. 33, 1424 (1997)