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EACON 2020

EurAsian Conference on Nanophotonics

April 6 – 9, 2020 / Jena, Germany

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Falk Eilenberger

Institute of Applied Physics, Abbe Center of Photonics, Friedrich-Schiller-Universität, Jena, Germany
Fraunhofer-Institute for Applied Optics and Precision Engineering IOF, Jena, Germany
Max Planck School of Photonics, Germany

Integration of two-dimensional materials in optical systems for nonlinear optics, sensing, and single photon sources

Many of crystalline two-dimensional materials have been discovered in the last years, a lot of which exhibit interesting physical properties. They are a natural addition to the set of common of optical materials and can be used to functionalize classic micro- and nanooptical systems. Moreover, they grow in a crystalline manner on many substrates commonly used in photonics, such as SiO2, Si, and Al2O3. From an optics point-of-view transition-metal dichalcogenides [1] (TMCs) and hexagonal Boron-Nitride [2] (hBN) are among the most interesting materials. TMCs are direct semiconductors with bandgaps in the visible. They exhibit unusually high refractive indices, strong and highly sensitive fluorescence [3], and large nonlinear coefficients [4]. Their light-matter-interaction behaviour is dominated by highly stable excitons and valley-polarization [5]. hBN, on the other hand, is a large bandgap dielectric, which exhibits bright room-temperature defect-state single-photon emitters [6, 7].

I will discuss some strategies to integrate 2D-materials with coatings, resonators, and waveguides. We use an IAPVD-based low-temperature technique to embed 2D-materials in planar dielectric systems [8], such as optical coatings and Bragg-cavities, without degradation of their properties. There we have studied the strong coupling of excitons to cavity polaritons and their coupling to external magnetic fields [8] as well as the resonator-based enhancement of single-photon-emitters [7]. We also show, that they can be integrated in optical systems [9] for usage in space-based quantum key distribution networks [10]. I will also discuss experiments, where the material is coupled to all-dielectric nanoscale resonators [11]; paving the way for active nanoscale photonic structures. Another topic is the integration of 2D-materials with optical fibers and nanophotonic waveguides. These waveguides enhance light-matter interaction radically and enable sensing applications and applications in low-power nonlinear optics. 

Figure 1. (left) An DBR-Resonator with embedded MoSe2 for experiments in strong coupling and polaritonics. (right) A QKD-CubeSat-Prototype with a single photon source from an integrated hBN-defect state emitter.

References
[1] K. F. Mak, C. Lee, J. Hone, J. Shan, and T. F. Heinz, Atomically Thin mos2: A New Direct-Gap Semiconductor, Phys. Rev. Lett. 105, 136805 (2010).
[2] L. Song, L. Ci, H. Lu, P. B. Sorokin, C. Jin, J. Ni, A. G. Kvashnin, D. G. Kvashnin, J. Lou, B. I. Yakobson, and P. M. Ajayan, Large scale growth and characterization of atomic hexagonal boron nitride layers, Nano Letters 10, 3209–3215 (2010). PMID: 20698639.
[3] A. Splendiani, L. Sun, Y. Zhang, T. Li, J. Kim, C.-Y. Chim, G. Galli, and F. Wang, Emerging Photoluminescence in Monolayer MoS2, Nano Lett. 10, 1271–1275 (2010). PMID: 20229981.
[4] N. Kumar, S. Najmaei, Q. Cui, F. Ceballos, P. M. Ajayan, J. Lou, and H. Zhao, Second harmonic microscopy of monolayer MoS2, Phys. Rev. B 87, 161403 (2013).
[5] K. F. Mak, K. He, J. Shan, and T. F. Heinz, Control of valley polarization in monolayer mos 2 by optical helicity, Nature nanotechnology 7, 494 (2012).
[6] G. Grosso, H. Moon, B. Lienhard, S. Ali, D. K. Efetov, M. M. Furchi, P. Jarillo-Herrero, M. J. Ford, I. Aharonovich, and D. Englund, Tunable and high-purity room temperature single-photon emission from atomic defects in hexagonal boron nitride, Nature communications 8, 705 (2017).
[7] T. Vogl, Y. Lu, and P. K. Lam, Room temperature single photon source using fiber-integrated hexagonal boron nitride, Journal of Physics D: Applied Physics 50, 295101 (2017).
[8] H. Knopf, N. Lundt, T. Bucher, S. Höfling, S. Tongay, T. Taniguchi, K. Watanabe, I. Staude, U. Schulz, C. Schneider, and F. Eilenberger, Integration of atomically thin layers of transition metal dichalcogenides into high-q, monolithic bragg-cavities: an experimental platform for the enhancement of the optical interaction in 2d-materials, Opt. Mater. Express 9, 598–610 (2019).
[9] T. Vogl, R. Lecamwasam, B. C. Buchler, Y. Lu, and P. K. Lam, Compact cavity-enhanced single-photon generation with hexagonal boron nitride, ACS Photonics in publication (2019).
[10] T. Vogl, K. Sripathy, A. Sharma, P. Reddy, J. Sullivan, J. R. Machacek, L. Zhang, F. Karouta, B. C. Buchler, M. W. Doherty et al., Radiation tolerance of two-dimensional material-based devices for space applications, Nature communications 10, 1202 (2019).

Further Talks

Andrea Csáki

Microfludic Synthesis of plasmonic Nanoparticles for Sensing Applications

Andrey Turchanin

Controlled growth of transition metal dichalcogenide monolayers for applications in nanoelectronic and nanophotonic devices

Chi Chen

Near Field Spectroscopic Imaging: from Hard to Soft Materials

Chi-How Peng

Cobalt mediated controlled/living radical polymerization: from mechanism understanding to materials application

Chun-Hong Kuo

Bridging Energy and Chemistry via Nanoarchitectonic Engineering at Atomic Scale

Falk Eilenberger

Integration of two-dimensional materials in optical systems for nonlinear optics, sensing, and single photon sources

Frank Setzpfandt

Nonlinear frequency conversion in nanostructured optical systems for application in quantum photonics

Heng-Liang Wu

Controlling the Oxidation State of Cu Electrode and Reaction Intermediates for Electrochemical CO2 Reduction to Ethylene

Kien-Voon Kong

Direct Observation of Reaction Intermediates of Metal-based Therapeutic Agents in Single Living Cell Using TERS

Maria Wächtler

Quantum confined semiconductor nanostructures in light-driven catalysis

Martin Presselt

Supramolecular Control of Optical and Electronical Properties of Two-Dimensional Dye Layers

Po-Chiao Lin

New Environment Sensitive Fluorophores with Color-Tailored Emission: In Vivo Monitoring of Carbonic Anhydrases Expression on Growth of Larval Zebrafish

Shangjr (Felix) Gwo

Plasmonic Metasurface-Enhanced Linear and Nonlinear Processes in Two-Dimensional Semiconductors

Ta-Jen Yen

Empowering Bilayer MoS2 by Engineered Plasmonic Nanostructures for Optoelectronic Applications

Tiow-Gan Ong

Carbodicarbene, Carbogenic Maverick, Not a Moderate!

Volker Deckert

Plasmon Enhanced Probe Spectroscopies – Structural Investigation of Nanoscale Objects

Yi-Tsu Chan

Molecular self-assembly methodology for rational construction of metallosupramolecules with high structural complexity

Yian Tai

Toward a universal polymeric material for electrode buffer layers in organic optoelectronics

Yu-Chieh Cheng

Kirigami-based soft robots with light-responsive properties

Yu-Jung Lu

Controlling Light-matter Interactions at Nanoscale with Plasmonics: From Spontaneous Emission to Lasing