Erlangen 2022 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
Q: Fachverband Quantenoptik und Photonik
Q 5: Quantum Technologies I
Q 5.1: Talk
Monday, March 14, 2022, 14:00–14:15, Q-H13
Monolithic double resonant Bragg-Cavities for efficient Second Harmonic Generation in MoS2 and WS2 — Heiko Knopf1,2,3, •Sai Shradha1, Fatemeh Alsadat Abtahi1, Gia Quyet Ngo1, Emad Najafidehaghani4, Antony George4, Ulrike Schulz2, Sven Schröder2, and Falk Eilenberger1,2,3 — 1Institute of Applied Physics, Abbe-Center of Photonics, Friedrich-Schiller-University, Albert-Einstein-Straße 15, 07745 Jena — 2Fraunhofer-Institute for Applied Optics and Precision Engineering IOF, Albert-Einstein-Straße 7, 07745 Jena — 3Max Planck School of Photonics, Albert-Einstein-Straße 7, 07745 Jena — 4Institute of Physical Chemistry, Friedrich Schiller University Jena, Lessingstraße 10, 07743 Jena
Transition metal dichalcogenides (TMDCs) are semiconducting 2D-materials with a strong second-order nonlinearity per unit thickness, making them interesting for nonlinear light-conversion devices. Due to their small thickness, an interaction enhancement is, however, required for efficient operation. Considering the dispersion of real optical layers, double-resonant monolithic Fabry-Perot systems with integrated MoS2 monolayers are designed that provide the required efficiency enhancement through resonances for both fundamental and SHG modes at λ_"FW" =800 "nm" and λ_"SHG" =400 "nm" respectively. We then report on the fabrication of such cavities, with an ion-assisted deposition process. We demonstrate enhanced second-harmonic generation and discuss possible generalization schemes.