Hamburg 2009 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 45: Laserentwicklung: Nichtlineare Effekte
Q 45.3: Talk
Thursday, March 5, 2009, 11:00–11:15, VMP 6 HS-D
532-nm-pumped cw singly resonant optical parametric oscillator based on MgO:PPLN — •Sebastian Zaske1, Dong-Hoon Lee2, and Christoph Becher1 — 1Fachrichtung 7.3 (Technische Physik), Universität des Saarlandes, Campus E2.6, 66123 Saarbrücken — 2Division of Physical Metrology, Korea Research Institute of Standards and Science (KRISS), 1 Doryong-Dong, Yuseong-Gu, Daejeon 305-340, Republic of Korea
In recent years the development of green-pumped, cw singly resonant optical parametric oscillators (cw SROs) based on undoped periodically poled LiNbO3 (PPLN) has been impeded by the effects of photorefractive damage and green-induced infrared absorption (GRIIRA). It has been demonstrated that both effects can be eliminated or at least significantly reduced by MgO doping. Our results show that MgO-doped PPLN can be considered an appropriate nonlinear material for green-pumped cw SROs at moderate pump powers: we report on a cw SRO based on MgO:PPLN and pumped at 532 nm by a single-mode DPSS laser. At a pump power of 2 W, it generates more than 300 mW of single frequency idler output power at 1416 nm. To prove the tunability, spectral purity and narrow linewidth of our device we performed Doppler-free saturation spectroscopy of the Cs D2 line at the signal wavelength of 852 nm. Furthermore we achieved frequency stabilization of the SRO’s signal frequency to one of the hyperfine components of the Cs D2 transition.