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Q: Fachverband Quantenoptik und Photonik
Q 12: Quantum Optics (Miscellaneous) II
Q 12.6: Vortrag
Montag, 14. März 2022, 17:45–18:00, Q-H14
Fabrication of periodically poled LNOI for efficient non-linear optical processes — •Laura Bollmers1, Peter Mackwitz2, Laura Padberg1, Marcello Massaro1, Gerhard Berth2, Christof Eigner1, and Christine Silberhorn1 — 1Paderborn University, Integrated Quantum Optics, Institute of Photonic Quantum Systems (PhoQS), Warburger Str. 100, 33098 Paderborn, Germany — 2Paderborn University, Nanostructure Optoelectronics, Warburger Str. 100, 33098 Paderborn, Germany
Miniaturization of optical circuits has been a vivid field of both, research and development for several decades. Within the last years, this progress has reached the realms of integrated optics and quantum photonics. Here, LNOI has become one of the most promising materials, as it combines the excellent properties of lithium niobate with small feature sizes. In order to fully exploit the possibilities of the material platform, dispersion engineered processes can be tailored by means of quasi-phase matching, which is based on periodic poling of the crystal. For periodically poled LNOI samples, novel processes need to be developed, which makes LNOI technology challenging and demanding. On our first step we focused on the fabrication of finger electrodes for periodic poling and investigated and optimized the respective design parameters. We tested different timing schemes for periodic domain inversion to optimize switching kinetics. We demonstrate that poling lengths up to 7.5 mm are possible and show first nonlinear optical conversion analysis.