Hannover 2013 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 44: Laser development: Solid state lasers II
Q 44.1: Talk
Thursday, March 21, 2013, 11:00–11:15, F 128
A 2.1-Watts Intracavity-frequency-doubled All-solid-state Light Source at 671 nm for Laser Cooling of Lithium — •Andrea Bergschneider1,2, Ulrich Eismann1, Christophe Salomon1, and Frederic Chevy1 — 1Laboratoire Kastler Brossel, ENS, UPMC, CNRS UMR 8552, 24 rue Lhomond, 75231 Paris, France — 2Physikalisches Institut der Universität Heidelberg
Lithium atoms are one of the most versatile species used for research on quantum gases. We present an all-solid-state laser source developed for laser cooling on the Lithium D-lines. It is based on a diode-pumped, neodymium-doped orthovanadate (Nd:YVO4) ring laser operating at 1342 nm frequency doubled with periodically poled KTP [1]. Our second generation laser source is intracavity doubled and emits up to 2.1 W of single-frequency light at 671 nm. We develop a simple theory for the efficient implementation of intracavity second harmonic generation, and its application to our system allows us to obtain nonlinear conversion efficiencies of up to 88%. The second-harmonic wavelength can be tuned over 0.5 nm, and mode-hop-free scanning over more than 6 GHz is demonstrated, corresponding to about ten times the laser cavity free spectral range.
[1] U. Eismann et al., Appl. Phys. B 106 (2012)