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4 March 2019 Recent advances in sub-µm PPKTP for non-linear interactions with counter-propagating photons
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Abstract
Mirrorless optical parametric oscillators (MOPO) represent a special class of parametric devices based on three-wave nonlinear interaction in which the generated photons counter-propagate. Owing to the phase-matching condition of the counter-propagating waves, MOPOs can sustain oscillation without mirrors and present unique and useful tuning and spectral properties. In this paper, we will review our recent advances in structuring technology to achieve quasi-phase matching periodicities as short as 500 nm in Rb-doped KTiOPO4, which are necessary to compensate for the large phase mismatch. We will also review the performance of MOPOs both in the ps- and ns- pumping regime. In the latter, our crystals reach single-pass conversion efficiencies exceeding 50%, with mJ-level output energies.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Andrius Zukauskas, Anne-Lise Viotti, Riaan Coetzee, Charlotte Liljestrand, Valdas Pasiskevicius, and Carlota Canalias "Recent advances in sub-µm PPKTP for non-linear interactions with counter-propagating photons", Proc. SPIE 10902, Nonlinear Frequency Generation and Conversion: Materials and Devices XVIII, 109020G (4 March 2019); https://doi.org/10.1117/12.2514724
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