@article{GutscheSantiagoSchneideretal.2020, author = {Gutsche, Philipp and Santiago, Xavier Garcia and Schneider, Philipp-Immanuel and McPeak, Kevin and Nieto-Vesperinas, Manuel and Burger, Sven}, title = {Role of Geometric Shape in Chiral Optics}, volume = {12}, journal = {Symmetry}, arxiv = {http://arxiv.org/abs/1808.01855}, doi = {10.3390/sym12010158}, pages = {158}, year = {2020}, language = {en} } @inproceedings{SchneiderSantiagoBinkowskietal.2018, author = {Schneider, Philipp-Immanuel and Santiago, Xavier Garcia and Binkowski, Felix and Gutsche, Philipp and H{\"o}hne, Theresa and Hammerschmidt, Martin and Zschiedrich, Lin and Burger, Sven}, title = {Light Management for Engineering Luminescence in Nanoscale Environments By Numerical Optimization}, volume = {16}, booktitle = {The Electrochemical Society, Meeting Abstracts}, issn = {2151-2043}, doi = {10.1149/MA2018-01/16/1164}, pages = {1164}, year = {2018}, language = {en} } @article{GutscheSchneiderBurgeretal.2018, author = {Gutsche, Philipp and Schneider, Philipp-Immanuel and Burger, Sven and Nieto-Vesperinas, Manuel}, title = {Chiral scatterers designed by Bayesian optimization}, volume = {963}, journal = {J. Phys.: Conf. Ser.}, arxiv = {http://arxiv.org/abs/1712.07091}, doi = {10.1088/1742-6596/963/1/012004}, pages = {012004}, year = {2018}, language = {en} } @inproceedings{MalureanudeLassonFrandsenetal.2018, author = {Malureanu, Radu and de Lasson, Jakob Rosenkrantz and Frandsen, Lars Hagedorn and Gutsche, Philipp and Burger, Sven and Kim, Oleksiy S. and Breinbjerg, Olav and Ivinskaya, Aliaksandra and Wang, Fengwen and Sigmund, Ole and H{\"a}yrynen, Teppo and Lavrinenko, Andrei and M{\o}rk, Jesper and Gregersen, Niels}, title = {Which Computational Methods Are Good for Analyzing Large Photonic Crystal Membrane Cavities?}, booktitle = {20th International Conference on Transparent Optical Networks (ICTON)}, doi = {10.1109/ICTON.2018.8473951}, year = {2018}, language = {en} } @article{WilsonGutscheHerrmannetal.2019, author = {Wilson, Jon and Gutsche, Philipp and Herrmann, Sven and Burger, Sven and McPeak, Kevin}, title = {Correlation of circular differential optical absorption with geometric chirality in plasmonic meta-atoms}, volume = {27}, journal = {Opt. Express}, doi = {10.1364/OE.27.005097}, pages = {5097}, year = {2019}, language = {en} } @article{GutscheMaeusleBurger2016, author = {Gutsche, Philipp and M{\"a}usle, Raquel and Burger, Sven}, title = {Locally Enhanced and Tunable Optical Chirality in Helical Metamaterials}, volume = {3}, journal = {Photonics}, arxiv = {http://arxiv.org/abs/1611.07748}, doi = {10.3390/photonics3040060}, pages = {60}, year = {2016}, language = {en} } @inproceedings{GutscheMaeusleBurger2016, author = {Gutsche, Philipp and M{\"a}usle, Raquel and Burger, Sven}, title = {Tailoring local optical chirality in helical metamaterials}, booktitle = {2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics}, doi = {10.1109/MetaMaterials.2016.7746440}, pages = {73 -- 75}, year = {2016}, language = {en} } @misc{WilsonHerrmannGutscheetal.2016, author = {Wilson, Jon and Herrmann, Sven and Gutsche, Philipp and Burger, Sven and McPeak, Kevin}, title = {The Chiral Coefficient: Rapid Optimization of Broadband Plasmonic Chirality}, journal = {2016 MRS Fall Meeting \& Exhibit}, year = {2016}, language = {en} } @inproceedings{GutscheMaeusleBurger2016, author = {Gutsche, Philipp and M{\"a}usle, Raquel and Burger, Sven}, title = {Circular polarization phenomena in chiral nano-optical devices}, booktitle = {Light, Energy and the Environment 2016}, doi = {10.1364/FTS.2016.JW4A.4}, pages = {JW4A.4}, year = {2016}, language = {en} } @misc{deLassonFrandsenBurgeretal.2016, author = {de Lasson, Jakob Rosenkrantz and Frandsen, Lars Hagedorn and Burger, Sven and Gutsche, Philipp and Kim, Oleksiy S. and Breinbjerg, Olav and Sigmund, Ole and Mork, Jesper and Gregersen, Niels}, title = {Comparison of four computational methods for computing Q factors and resonance wavelengths in photonic crystal membrane cavities}, journal = {Proceedings of the 7th International Conference on Metamaterials, Photonic Crystals and Plasmonics}, year = {2016}, language = {en} } @article{AbassGutscheMaesetal.2016, author = {Abass, Aimi and Gutsche, Philipp and Maes, Bjorn and Rockstuhl, Carsten and Martins, Emiliano R}, title = {Insights into directional scattering: from coupled dipoles to asymmetric dimer nanoantennas}, volume = {24}, journal = {Opt. Express}, number = {17}, doi = {10.1364/OE.24.019638}, pages = {19638 -- 19650}, year = {2016}, abstract = {Strong and directionally specific forward scattering from optical nanoantennas is of utmost importance for various applications in the broader context of photovoltaics and integrated light sources. Here, we outline a simple yet powerful design principle to perceive a nanoantenna that provides directional scattering into a higher index substrate based on the interference of multiple electric dipoles. A structural implementation of the electric dipole distribution is possible using plasmonic nanoparticles with a fairly simple geometry, i.e. two coupled rectangular nanoparticles, forming a dimer, on top of a substrate. The key to achieve directionality is to choose a sufficiently large size for the nanoparticles. This promotes the excitation of vertical electric dipole moments due to the bi-anisotropy of the nanoantenna. In turn, asymmetric scattering is obtained by ensuring the appropriate phase relation between the vertical electric dipole moments. The scattering strength and angular spread for an optimized nanoantenna can be shown to be broadband and robust against changes in the incidence angle. The scattering directionality is maintained even for an array configuration of the dimer. It only requires the preferred scattering direction of the isolated nanoantenna not to be prohibited by interference.}, language = {en} } @article{GregersendeLassonFrandsenetal.2018, author = {Gregersen, Niels and de Lasson, Jakob Rosenkrantz and Frandsen, Lars Hagedorn and Gutsche, Philipp and Burger, Sven and Kim, Oleksiy S. and Breinbjerg, Olav and Ivinskaya, Aliaksandra and Wang, Fengwen and Sigmund, Ole and H{\"a}yrynen, Teppo and Lavrinenko, Andrei}, title = {Benchmarking state-of-the-art numerical simulation techniques for analyzing large photonic crystal membrane line defect cavities}, volume = {10672}, journal = {Proc. SPIE}, doi = {10.1117/12.2304338}, pages = {106721C}, year = {2018}, language = {en} } @inproceedings{GregersendeLassonFrandsenetal.2018, author = {Gregersen, Niels and de Lasson, Jakob Rosenkrantz and Frandsen, Lars Hagedorn and Kim, Oleksiy S. and Breinbjerg, Olav and Wang, Fengwen and Sigmund, Ole and Ivinskaya, Aliaksandra and Lavrinenko, Andrei and Gutsche, Philipp and Burger, Sven and H{\"a}yrynen, Teppo and M{\o}rk, Jesper}, title = {Benchmarking state-of-the-art optical simulation methods for analyzing large nanophotonic structures}, booktitle = {XXVI International Workshop on Optical Wave \& Waveguide Theory and Numerical Modelling, Proceedings}, isbn = {978-3-921823-98-9}, pages = {9}, year = {2018}, language = {en} } @article{GutscheNietoVesperinas2018, author = {Gutsche, Philipp and Nieto-Vesperinas, Manuel}, title = {Optical Chirality of Time-Harmonic Wavefields for Classification of Scatterers}, volume = {8}, journal = {Sci. Rep.}, arxiv = {http://arxiv.org/abs/1802.08029}, doi = {10.1038/s41598-018-27496-w}, pages = {9416}, year = {2018}, language = {en} } @article{deLassonFrandsenGutscheetal.2018, author = {de Lasson, Jakob Rosenkrantz and Frandsen, Lars Hagedorn and Gutsche, Philipp and Burger, Sven and Kim, Oleksiy S. and Breinbjerg, Olav and Ivanskaya, Aliaksandra and Wang, Fengwen and Sigmund, Ole and H{\"a}yrynen, Teppo and Lavrinenko, Andrei and Mork, Jesper and Gregersen, Niels}, title = {Benchmarking five numerical simulation techniques for computing resonance wavelengths and quality factors in photonic crystal membrane line defect cavities}, volume = {26}, journal = {Opt. Express}, arxiv = {http://arxiv.org/abs/1710.02215}, doi = {10.1364/OE.26.011366}, pages = {11366}, year = {2018}, language = {en} } @misc{GutscheNietoVesperinasMaeusleetal.2017, author = {Gutsche, Philipp and Nieto-Vesperinas, Manuel and M{\"a}usle, Raquel and Burger, Sven}, title = {Chiral Nanophotonics: Theory and Simulation}, journal = {Doctoral Summer School on Nanophotonics and Metamaterials, ITMO University}, year = {2017}, abstract = {The interaction of light and chiral matter is subject of recent research both in fundamental science and applications. Among these are the helicity of electromagnetic fields described with the optical chirality density and emitters sensitive to circular polarization employed in quantum communications. In the weak coupling regime of chiral emitters, we analyze the conversion of chirality which can be regarded as an analogue to absorption of energy describing the change of circular polarization of the incident field. This enables the tailoring of chiral near-fields close to metamaterials, e.g. composed of gold helices, and gives insights into extinction measurements such as circular dichroism. We show relation of the weak and strong coupling regime. The latter can be modelled with cross electric-magnetic polarizabilities or with effective chiral materials, i.e. bi-anisotropic media. Accordingly, we motivate the necessity for rigorous numerical simulations to accurately describe chiral light-matter interaction.}, language = {en} } @misc{GutscheBurgerNietoVesperinas2017, author = {Gutsche, Philipp and Burger, Sven and Nieto-Vesperinas, Manuel}, title = {Fundamentals and Applications of an Optical Theorem for Chiral Optical Fields}, journal = {4th International Conference on Optical Angular Momentum}, year = {2017}, abstract = {The helicity of light is of great interest in both fundamental research and in applications such as dichroism spectroscopy. Its time-harmonic formulation is directly proportional to the density of optical chirality. Recently, both an helicity optical theorem (HOT) and a chirality conservation law (CCL) have been formulated for arbitrary scatterers taking into account an underlying continuity equation of this quantity. We summarize these two equivalent fundamental laws and analyze their potential applications.}, language = {en} } @article{MrowinskiSchnauberGutscheetal.2019, author = {Mrowinski, Paweł and Schnauber, Peter and Gutsche, Philipp and Kaganskiy, Arsenty and Schall, Johannes and Burger, Sven and Rodt, Sven and Reitzenstein, Stephan}, title = {Directional emission of a deterministically fabricated quantum dot - Bragg reflection multi-mode waveguide system}, volume = {6}, journal = {ACS Photonics}, arxiv = {http://arxiv.org/abs/1902.01905}, doi = {10.1021/acsphotonics.9b00369}, pages = {2231}, year = {2019}, language = {en} } @misc{GutscheJuddSchmidt2014, author = {Gutsche, Philipp and Judd, Thomas and Schmidt, Frank}, title = {A convergence study of different Rigorous Coupled Wave Analysis (RCWA) approaches to time-harmonic electromagnetic scattering problems with applications to nanooptical structures}, journal = {Verhandlungen der Deutschen Physikalischen Gesellschaft (DPG-Fr{\"u}hjahrstagung Berlin 2014)}, year = {2014}, abstract = {Reliable numerical simulations of nano-optical structures are the key for design and pre-fabrication processes in diverse disciplines such as lithography in semiconductor industries, spectroscopy of biological molecules, optimization of quantum dot cavities for single-photon sources, and computation of atomic forces like the Casimir Effect. For these purposes a variety of different methods, e.g. FDTD, FEM and RCWA, are in use. On the one hand, FDTD and FEM are investigated intensively - both in mathematics and numerical experiments - and their approximations and convergence properties are well known. On the other hand, there is a lack of these insights in RCWA. In spite of this, RCWA is commonly used to simulate a wide range of systems. We review historical and modern contributions to convergence improvements with respect to RCWA from the early sugesstions to modern developments. We study the convergence rates of the open-source software S4 and analyze the algorithmic properties in detail. Furthermore, we compare RCWA and FEM simulations for different classes of problems including 1D-binary gratings and 2D-periodic photonic crystals.}, language = {en} } @misc{GutscheWolffMirnaziryetal.2015, author = {Gutsche, Philipp and Wolff, Christian and Mirnaziry, Sayyed R. and Poulton, Christopher G.}, title = {Coupled-Mode Equations for Stimulated Brillouin Scattering}, journal = {CUDOS 14th Annual Workshop 2015 Handbook}, year = {2015}, abstract = {Stimulated Brillouin Scattering (SBS) is a third-order nonlinear optical effect which originates from the interplay of acoustics and optics. Recently, SBS has been harnessed in nano-photonic waveguides for applications such as narrow-linewidth lasers and Brillouin dynamic gratings [1]. Since the timescales of both phenomena differ significantly, coupled-mode equations derived from a slowly varying envelope approximation are well suited for numerical investigations of SBS [2]. We use the Relaxation Method (RM) [3] to study the optical power transfer and spatially resolved power distributions in long waveguides in the steady state limit.}, language = {en} } @inproceedings{PoulikakosGutscheMcPeaketal.2015, author = {Poulikakos, Lisa and Gutsche, Philipp and McPeak, Kevin and Burger, Sven and Niegemann, Jens and Hafner, Christian and Norris, David}, title = {A Far-Field Interpretation of Optical Chirality in Analogy to Poynting's Theorem}, booktitle = {META '15 Proceedings}, pages = {1215 -- 1216}, year = {2015}, abstract = {The optical chirality density is a valuable tool in locally characterizing chiral electromagnetic near-fields. However, how this quantity could translate into the far-field is not well understood. Here, we formulate a far-field interpretation of optical chirality by investigating its conservation law in isotropic media in analogy to Poynting's Theorem. We define the global chirality and find that lossy materials, in particular plasmonic nanostructures, can act as chirality generators. This can enable chiral sensing applications at the single molecule level.}, language = {en} } @misc{PoulikakosGutscheMcPeaketal.2015, author = {Poulikakos, Lisa and Gutsche, Philipp and McPeak, Kevin and Burger, Sven and Niegemann, Jens and Hafner, Christian and Norris, David}, title = {A Far-Field Interpretation of the Optical Chirality}, journal = {Frontiers in Nanophotonics (Congressi Stefano Franscini)}, year = {2015}, abstract = {A chiral structure is not super-imposable with its mirror image. Most commonly found in organic molecules, chirality can also occur in other systems, such as electromagnetic fields, where circularly polarized light is the most widespread example. Chiral electromagnetic fields can be a useful tool for biosensing applications. In particular, it has been shown that chiral plasmonic nanostructures have the ability to produce strongly enhanced chiral near-fields. Recently, our group has developed chiral plasmonic nanopyramids, which have the ability to focus chiral near-fields at their tip. This could enable chiral sensing at the single-molecule level. Chiral near-fields can be characterized in terms of the "optical chirality density". This time-even and parity-odd pseudoscalar was first derived by Lipkin and was found to follow a conservation law analogous to the energy conservation of electromagnetic fields. More recently, Tang and Cohen identified the physical meaning of the "optical chirality density" as the degree of asymmetry in the excitation rate of a chiral molecule. However, how this near-field interpretation of the optical chirality could translate into the far-field is not well understood. Here, we formulate a far-field interpretation by investigating the conservation law for optical chirality in matter, and performing time-averaging in analogy to Poynting's Theorem. In parallel to extinction energy, we define the "global chirality" as the sum of chirality dissipation within a material and the chirality flux leaving the system. With finite-element simulations, we place a dipole source at locations of enhanced local chirality and investigate the global chirality and ellipticity of emitted light in the far-field. Interestingly, we find that lossy materials with a complex dielectric function have the ability to generate global chirality when excited by achiral light. In particular, chiral plasmonic nanostructures are found to act as effective global chirality generators. The global interpretation of optical chirality provides a useful tool for biosensing applications with chiral plasmonic nanostructures, where the detection is routinely performed in the far-field.}, language = {en} } @inproceedings{BurgerGutscheHammerschmidtetal.2015, author = {Burger, Sven and Gutsche, Philipp and Hammerschmidt, Martin and Herrmann, Sven and Pomplun, Jan and Schmidt, Frank and Wohlfeil, Benjamin and Zschiedrich, Lin}, title = {Hp-finite-elements for simulating electromagnetic fields in optical devices with rough textures}, volume = {9630}, booktitle = {Proc. SPIE}, arxiv = {http://arxiv.org/abs/1510.02607}, doi = {10.1117/12.2190119}, pages = {96300S}, year = {2015}, language = {en} }