Light-emitting semiconductor metasurfaces (Conference Presentation)

Isabelle Staude

doi:10.1117/12.2320942

17 September 2018 Light-emitting semiconductor metasurfaces (Conference Presentation)

Isabelle Staude

Proceedings Volume 10719, Metamaterials, Metadevices, and Metasystems 2018; 1071913 (2018) https://doi.org/10.1117/12.2320942
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

Abstract

Metasurfaces composed of designed Mie-resonant semicondcutor nanoparticles offer unique opportunities for controlling the properties of light fields [1]. Most prominently, they can impose a spatially variant phase shift onto an incident light field, thereby providing control over its wave front with high transmittance efficiency [2]. Furthermore, due to their resonant optical response, they can enhance and manipulate light emission processes, including spontaneous emission and nonlinear frequency generation. This talk will provide an overview of our recent advances in light-emitting Mie-resonant semiconductor metasurfaces. In particular, we have studied spontaneous emission from metasurfaces integrated with various types of emitters, including semiconductor quantum dots, monolayers of transition metal dichalcogenides, and fluorescent centers in the substrate [3]. We have also investigated nonlinear frequency generation in metasurfaces composed of materials with high second-order nonlinear susceptibility, such as gallium arsenide [4]. By combining spatial mapping, spectroscopy, and Fourier imaging of the metasurfaces’ emission, we show that the directional and spectral properties of both the spontaneously emitted and the nonlinear generated light can be tailored by the metasurface design. Our results demonstrate that Mie-resonant semiconductor metasurfaces offer an interesting route towards ultra-flat sources of tailored light fields. [1] I. Staude and J. Schilling, Nature Photon. 11, 274–284 (2017). [2] K. E. Chong et al., Nano Lett. 15, 5369–5374 (2015). [3] A. Vaskin et al., ACS Photonics, Just Accepted Manuscript, DOI: 10.1021/acsphotonics.7b01375 (2018). [4] S. Liu et al., Nano Lett. 16, 5426–5432 (2016).

Conference Presentation

Citation Download Citation

Isabelle Staude "Light-emitting semiconductor metasurfaces (Conference Presentation)", Proc. SPIE 10719, Metamaterials, Metadevices, and Metasystems 2018, 1071913 (17 September 2018); https://doi.org/10.1117/12.2320942

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KEYWORDS

Semiconductors

Imaging spectroscopy

Sum-frequency generation

Nanoparticles

Nonlinear optics

Phase shifts

Quantum dots

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