Highlighted authors are members of the University of Jena.
Combining Computational Spectroscopy and Dipole Modeling for Morphology Optimization of Metastructures in Photonic Applications
Year of publicationPublished in:Optical Molecular Probes, Imaging and Drug Delivery: part of Optica Biophotonics Congress: Optics in the Life Sciences
I. Riabenko, T. Pertsch
Combining Computational Spectroscopy and Dipole Modeling for Morphology Optimization of Metastructures in Photonic Applications
Year of publicationPublished in:Clinical and Translational Biophotonics: part of Optica Biophotonics Congress: Optics in the Life Sciences
I. Riabenko, T. Pertsch
Combining Computational Spectroscopy and Dipole Modeling for Morphology Optimization of Metastructures in Photonic Applications
Year of publicationPublished in:Optical Manipulation and Its Applications: part of Optica Biophotonics Congress: Optics in the Life Sciences
I. Riabenko, T. Pertsch
Combining Computational Spectroscopy and Dipole Modeling for Morphology Optimization of Metastructures in Photonic Applications
Year of publicationPublished in:Bio-Optics: Design and Application: part of Optica Biophotonics Congress: Optics in the Life Sciences
I. Riabenko, T. Pertsch
Deterministic Fabrication of Fluorescent Nanostructures Featuring Distinct Optical Transitions
Year of publicationPublished in:Nanomaterials
M. Rikers, A. Bashiri, G. Angela, M. Steinert, D. Choi, T. Pertsch, I. Staude
The precise and deterministic integration of fluorescent emitters with photonic nanostructures is an important challenge in nanophotonics and key to the realization of hybrid photonic systems, supporting effects such as emission enhancement, directional emission, and strong coupling. Such integration typically requires the definition or immobilization of the emitters at defined positions with nanoscale precision. While various methods were already developed for creating localized emitters, in this work we present a new method for the deterministic fabrication of fluorescent nanostructures featuring well-defined optical transitions; it works with a minimal amount of steps and is scalable. Specifically, electron-beam lithography is used to directly pattern a mixture of the negative-tone electron-beam resist with the europium complex Eu(TTA)₃, which exhibits both electric and magnetic dipolar transitions. Crucially, the lithography process enables precise control over the shape and position of the resulting fluorescent structures with a feature size of approx. 100 (Formula presented.) (Formula presented.). We demonstrate that the Eu(TTA)₃ remains fluorescent after exposure, confirming that the electron beam does not alter the structure the optical transitions. This work supports the experimental study of local density of optical states in nanophotonics. It also expands the knowledge base of fluorescent polymer materials, which can have applications in polymer-based photonic devices. Altogether, the presented fabrication method opens the door for the realization of hybrid nanophotonic systems incorporating fluorescent emitters for light-emitting dielectric metasurfaces.
Femtosecond Pulse Shaping with Semiconductor Huygens' Metasurfaces
Year of publicationPublished in:Advanced Optical Materials
K. Tanaka, D. Arslan, M. Weissflog, N. Geib, K. Gerold, A. Szeghalmi, M. Ziegler, F. Eilenberger, T. Pertsch, R. Schiek, I. Staude
Angle-Tolerant Circular Eigenpolarizations Enabled by Orientational Disorder in Dielectric Metasurfaces
Year of publicationPublished in:Advanced Optical Materials
K. Tanaka, A. Rahimzadegan, D. Arslan, A. Fitriana, S. Fasold, D. Pidgayko, M. Steinert, T. Pertsch, M. Decker, C. Rockstuhl, I. Staude
Tailored structural disorder in photonic metasurfaces enables advanced light shaping. Specifically, an orientational disorder in chiral nanostructures leads to circular eigenpolarizations with a heavily suppressed linear birefringence. The orientational disorder is, therefore, vital to observing purely chiroptical effects such as circular dichroism and optical activity. Here, it is experimentally and numerically demonstrated that all-dielectric orientationally disordered chiral bilayer square array metasurfaces preserve highly circular eigenpolarizations for a wide range of incidence angles. The angle-dependent performance of disordered chiral metasurfaces is compared with that of their C₂ and C₄ symmetric periodic counterparts, demonstrating that the disordered structures provide nearly pure circular eigenpolarizations across a larger range of angles and wavelengths, whereas the periodic ones do not. These findings underscore the ability of tailored disorder to enhance the robustness of engineered chiroptical responses of all-dielectric metasurfaces and highlight its potential for flat, integrable, and highly efficient optical components, such as circular polarizers and beam splitters.
Influence of mode polarization on the emission dynamics of zinc-oxide nanowire lasers coupled to planar aluminum substrates
Year of publicationPublished in:Optics letters
D. Repp, D. Mithun, F. Vitale, M. Kasten, V. Krishna, T. Do, I. Staude, S. Lin, J. Huang, G. Soavi, C. Ronning, T. Pertsch
Angle-Tolerant Circular Eigenpolarizations Enabled by Orientational Disorder in Dielectric Metasurfaces
Year of publicationPublished in:Advanced Optical Materials
K. Tanaka, A. Rahimzadegan, D. Arslan, A. Fitriana, S. Fasold, D. Pidgayko, M. Steinert, T. Pertsch, M. Decker, C. Rockstuhl, I. Staude
Tailored structural disorder in photonic metasurfaces enables advanced light shaping. Specifically, an orientational disorder in chiral nanostructures leads to circular eigenpolarizations with a heavily suppressed linear birefringence. The orientational disorder is, therefore, vital to observing purely chiroptical effects such as circular dichroism and optical activity. Here, it is experimentally and numerically demonstrated that all-dielectric orientationally disordered chiral bilayer square array metasurfaces preserve highly circular eigenpolarizations for a wide range of incidence angles. The angle-dependent performance of disordered chiral metasurfaces is compared with that of their C₂ and C₄ symmetric periodic counterparts, demonstrating that the disordered structures provide nearly pure circular eigenpolarizations across a larger range of angles and wavelengths, whereas the periodic ones do not. These findings underscore the ability of tailored disorder to enhance the robustness of engineered chiroptical responses of all-dielectric metasurfaces and highlight its potential for flat, integrable, and highly efficient optical components, such as circular polarizers and beam splitters.
Fabrication of low-loss lithium niobate on insulator waveguides on the wafer scale [Invited]
Year of publicationPublished in:Optical Materials Express
M. Younesi, T. Kasebier, I. Elmanov, Y. Li, P. Kumar, R. Geiss, T. Siefke, F. Eilenberger, F. Setzpfandt, U. Zeitner, T. Pertsch
We report on the wafer scale fabrication of single-mode low-loss lithium niobate on insulator waveguides utilizing a chemically amplified resist and an optimized dry etching method. The fabricated single-mode waveguides are free of residuals and re-deposition, with measured losses for straight waveguides around 2 dB/m (0.02 dB/cm). We present a method offering advantages for large-scale production mainly due to its cost-effectiveness and faster writing time. This work holds promise for advancing integrated photonics and optical communication technologies.