Article
Chemistry, Multidisciplinary
You Zhou, Shuwei Guo, Adam Christopher Overvig, Andrea Alu
Summary: Optical metasurfaces have been widely used in shaping the wavefront of light, but their low quality (Q-) factor modes have limited the spectral and angular control. In this study, we introduce multiresonant nonlocal metasurfaces that can shape the spatial properties of light using resonances with different Q-factors. Through rational design, we achieve nonlocal flat lenses suitable for compact band-pass imaging devices and demonstrate high-quality-factor metagratings for extreme wavefront transformations with large efficiency using modified topology optimization.
Article
Nanoscience & Nanotechnology
Daniel Frese, Qunshuo Wei, Yongtian Wang, Mirko Cinchetti, Lingling Huang, Thomas Zentgraf
Summary: Nonlinear metasurface holography demonstrates the potential of metasurfaces to control light while converting its frequency, allowing for the generation of virtual objects or optical information at different wavelengths. This method provides a new approach for beam shaping and holographic imaging.
Article
Chemistry, Multidisciplinary
Boyuan Jin, Dhananjay Mishra, Christos Argyropoulos
Summary: The study introduces a plasmonic metasurface design based on silver nanostripes and bulk lithium niobate crystal for efficient SPDC source. By combining resonances with generated frequencies, the electric field in the nonlinear media is significantly enhanced, leading to improved photon-pair generation rates.
Article
Engineering, Electrical & Electronic
Antonino Cala Lesina, Dominic Goodwill, Eric Bernier, Lora Ramunno, Pierre Berini
Summary: This study introduces a novel plasmonic pixel design for beam steering in LIDAR, with simulations predicting the control of reflection coefficient phase. The research also discusses the optical response mechanism, the impact of connectors, and strategies to maximize reflection coefficient magnitude and achieve dual-band operation.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Aditya Garg, Elieser Mejia, Wonil Nam, Meitong Nie, Wei Wang, Peter Vikesland, Wei Zhou
Summary: Scalable nanofabrication of microporous multiresonant plasmonic meshes (MMPMs) is achieved via a hierarchical micro-/nanoimprint lithography approach. These meshes demonstrate broadband nonlinear nanoplasmonic enhancement and can be used as bio-interfaced surface-enhanced Raman spectroscopy sensors.
Article
Multidisciplinary Sciences
M. Saad Bin-Alam, Orad Reshef, Yaryna Mamchur, M. Zahirul Alam, Graham Carlow, Jeremy Upham, Brian T. Sullivan, Jean-Michel Menard, Mikko J. Huttunen, Robert W. Boyd, Ksenia Dolgaleva
Summary: Plasmonic nanostructures show great potential in ultra-thin sub-wavelength devices, but are often limited by resistive losses. By utilizing surface lattice resonances (SLRs), researchers have achieved a high quality-factor metasurface in the telecommunication band, offering exciting possibilities for manipulating incident light fields and creating flexible wavelength-scale devices.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Matthias Keil, Alexandre Emmanuel Wetzel, Kaiyu Wu, Elena Khomtchenko, Jitka Urbankova, Anja Boisen, Tomas Rindzevicius, Ada-Ioana Bunea, Rafael J. Taboryski
Summary: This paper demonstrates plasmonic color metasurfaces up to 60 cm(2) in size fabricated using deep UV projection lithography with innovative resolution enhancement techniques. By including transparent assist features in the mask layout, critical dimensions like nanopillar or nanohole diameters and types can be tailored. With the capability to write nanostructure arrays in just a few minutes, this approach shows significant improvement compared to conventional methods.
NANOSCALE ADVANCES
(2021)
Article
Optics
Yuhu Tang, Yao Liang, Jin Yao, Mu Ku Chen, Shirong Lin, Zhuo Wang, Jingcheng Zhang, Xu Guang Huang, Changyuan Yu, Din Ping Tsai
Summary: This study demonstrates numerically the use of 3D plasmonic metasurfaces to overcome the trade-off between Q-factor and circular dichroism (CD) in chiral BIC metasurfaces, achieving high-Q quasi-BIC resonances (Q ≈ 938) with strong CD (≈ 0.67) in the mid-infrared. The independent manipulation of Q-factor and CD is made possible by the dissimilar dimer configuration consisting of a twisted vertical split-ring resonator (VSRR) and a wall, where the height of the wall and the twisted angle of the VSRR control the Q-factor and CD, respectively. These findings offer new paradigms for controlling advanced chiroptical responses and have potential applications that require strong CD with enhanced light-matter interaction.
LASER & PHOTONICS REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Andrew Butler, Christos Argyropoulos
Summary: In this work, the unique properties of a plasmonic Huygens' metasurface composed of active metal-dielectric core-shell nanoparticles are analyzed. The reflection and transmission coefficients of the metasurface are calculated under various levels of gain, demonstrating the existence of reflectionless transmission when an exceptional point is formed. The proposed new active metasurface design, with subwavelength thickness, can be used to realize ultracompact perfect transmission optical filters.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Optics
Seyed M. Sadeghi, Dustin T. Roberts, Rithvik R. Gutha, Steven Allen, Christina Sharp
Summary: In this study, in-plane light scattering and collective excitations in plasmonic metasurfaces consisting of Au V-shaped nanoantennas were investigated experimentally and numerically. It was found that the metasurfaces can support two types of supercells, with different coupling processes and resonances, depending on the polarization of the incident light.
Article
Materials Science, Multidisciplinary
Zhongkai Cheng, Nasir Javed, Fang Zhao, Deirdre M. O'Carroll
Summary: Photon recycling, a process of iterative self-absorption and re-emission by semiconductors, is found to occur in organic semiconductors. The study shows that the substrate surface type and the morphology of the semiconductor significantly affect photon recycling. Surfaces and structures that promote high quantum yield and in-plane waveguiding exhibit stronger photon recycling effects.
MATERIALS TODAY PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Tianjing Guo, Christos Argyropoulos
Summary: This study demonstrates a compact bifacial plasmonic metasurface that acts as an ultrathin nonreciprocal transmission filter at near-infrared frequencies. The proposed nanostructure is simple to implement and achieves strong and broadband nonreciprocity with unity transmission contrast. The metasurface breaks the Lorentz reciprocity law at the nanoscale due to its spatially asymmetric geometry combined with enhanced nonlinearity.
Article
Optics
Jong-Kwan An, Kwang-Hyon Kim
Summary: Efficient high-harmonic generation with low pump threshold can be achieved by using dielectric and plasmonic hybrid metasurfaces.
ZnO nanodisk arrays supported by dielectric substrate enable efficient generation of high-order harmonics.
Plasmonic nanoantennae metasurfaces supported by dielectric-coated metallic substrate can result in orders-of-magnitude higher HHG efficiency compared to using dielectric substrate.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Hao Tang, Guozheng Shao, Bruce J. Hinds
Summary: The study demonstrates a plasmonic flow reactor utilizing thin gold film at exits of monolithic anodized aluminum oxide membranes under LED illumination. By controlling residence time with flow rate and pore geometry, the system achieves high efficiency for peroxide activation and restricts reactions to single oxidation. The mechanism primarily involves hot electron generation from gold plasmonic response.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Varvara V. Zubyuk, Pavel A. Shafirin, Maxim R. Shcherbakov, Gennady Shvets, Andrey A. Fedyanin
Summary: This study reports the dynamic control of the nonlinear optical response in time-variant semiconductor metasurfaces supporting high-Q resonances in the near-infrared spectral range, and validates the time-variant nature of the system.
Article
Optics
Xiaorun Zang, Godofredo Bautista, Leo Turquet, Tero Setala, Martti Kauranen, Jari Turunen
Summary: A general approach for efficient excitation of hybridized plasmon modes in nanoantennas is proposed by focusing the incident light field on cylindrically polarized vector beams of various higher-order spiral phases. This method helps in designing an effective mode-matching field profile in the tightly focused region.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2021)
Article
Physics, Multidisciplinary
Timo Stolt, Mikko J. Huttunen
Summary: This study proposes a method for broadband frequency conversion using the spatially dispersive responses of periodic metasurfaces. Numerical simulations demonstrate that this method can overcome the time-bandwidth limit of resonators and achieve 1000-fold enhancement of nonlinear signals. Furthermore, the method enables broadband frequency conversion with a conversion bandwidth larger than the resonator linewidth.
NEW JOURNAL OF PHYSICS
(2022)
Article
Optics
Jordan T. R. Page, Orad Reshef, Robert W. Boyd, Jeff S. Lundeen
Summary: The development of metasurfaces has enabled portable and functional flat optical devices. Spaceplates, as a complementary element, reduce the space between metalenses and further miniaturize imaging devices. This study employs inverse-design techniques to explore the behavior of thin-film-based spaceplates and discovers a tradeoff between the compression factor and the numerical aperture. Even simple designs with realistic materials can achieve capable spaceplates for monochromatic applications.
Article
Optics
Timo Stolt, Anna Vesala, Heikki Rekola, Petri Karvinen, Tommi K. Hakala, Mikko J. Huttunen
Summary: Nonlinear metamaterials have the potential for flat nonlinear optical devices, but their conversion efficiencies are generally low. Recent research has focused on enhancing nonlinear processes by utilizing high quality factor resonances, such as surface lattice resonances (SLRs). The study investigates the dispersive nature of SLRs and its effect on the nonlinear responses of SLR-supporting metasurfaces. Experimental results show that tilting the sample along two orthogonal directions can achieve multiple resonances for different pump and second-harmonic signal wavelengths. The characterized metasurfaces exhibit a second-order susceptibility value of 0.40 pm/V, suggesting aluminum as a potential material for nonlinear metasurfaces.
Article
Optics
N. Apurv Chaitanya, M. A. T. Butt, O. Reshef, Robert W. Boyd, P. Banzer, Israel De Leon
Summary: Asymmetric transmission in chiral plasmonic metasurfaces can be achieved by controlling the scattering of plasmonic nanoparticles. This effect is caused by an unbalanced excitation of lattice modes by circularly polarized light of opposite handedness. Only nonzero diffraction orders contribute to this effect.
Article
Green & Sustainable Science & Technology
Matthew Skiles, Euijin Yang, Orad Reshef, Diego Robalino Munoz, Diana Cintron, Mary Laura Lind, Alexander Rush, Patricia Perez Calleja, Robert Nerenberg, Andrea Armani, Kasey M. Faust, Manish Kumar
Summary: Converting traditional in-person conferences to virtual conferences can significantly improve diversity, equity, and inclusion, mainly due to reduced financial and personal-life burdens. However, further development of virtual networking features and poster sessions is needed to achieve widespread adoption and acceptance of this new format.
NATURE SUSTAINABILITY
(2022)
Article
Chemistry, Multidisciplinary
Theng-Loo Lim, Yaswant Vaddi, M. Saad Bin-Alam, Lin Cheng, Rasoul Alaee, Jeremy Upham, Mikko J. Huttunen, Ksenia Dolgaleva, Orad Reshef, Robert W. Boyd
Summary: This study introduces the concept of Fourier lattice resonances (FLRs) and achieves complete control over the transmission spectrum of a metasurface by flexibly placing resonances. Based on standard lithographic fabrication methods, metasurfaces suitable for various optical cavity applications can be designed and manufactured.
Article
Chemistry, Multidisciplinary
Jussi Kelavuori, Viatcheslav Vanyukov, Timo Stolt, Petri Karvinen, Heikki Rekola, Tommi K. Hakala, Mikko J. Huttunen
Summary: By breaking the symmetry of the nanoparticle surroundings, the properties of high quality factor SLRs can be easily modified. We demonstrated how changing the refractive index of the surrounding immersion oil by controlling the ambient temperature of the device can increase the quality factor of the SLR. These results show accurate and reversible modification of SLR properties, opening up possibilities for tunable SLR-based photonic devices.
Article
Optics
M. Saad Bin-Alam, Orad Reshef, Raja Naeem Ahmad, Jeremy Upham, Mikko J. Huttunen, Ksenia Dolgaleva, Robert W. Boyd
Summary: In this study, a multiresonant metasurface with different resonant frequencies was experimentally demonstrated by manipulating the polarization degree of freedom. The metasurface showed potential advantages in filtering, sensing, and nonlinear optics applications.
Article
Optics
Nathalie Vermeulen, Daniel Espinosa, Adam Ball, John Ballato, Philippe Boucaud, Georges Boudebs, Cecilia L. A. Campos, Peter Dragic, Anderson S. L. Gomes, Mikko J. Huttunen, Nathaniel Kinsey, Rich Mildren, Dragomir Neshev, Lazaro A. Padilha, Minhao Pu, Ray Secondo, Eiji Tokunaga, Dmitry Turchinovich, Jingshi Yan, Kresten Yvind, Ksenia Dolgaleva, Eric W. Van Stryland
Summary: Over the past two decades, the field of nonlinear optics has seen significant growth and advancements in material science and technology. This article presents a new set of data tables listing the nonlinear-optical properties of different material categories, along with best practices for conducting and reporting nonlinear-optical experiments. While the tables demonstrate strong progress, it is important for the nonlinear-optics community to adopt these best practices for better comparison, interpretation, and utilization of published parameters, thereby further stimulating the overall progress in the field.
JOURNAL OF PHYSICS-PHOTONICS
(2023)
Article
Physics, Applied
Radoslaw Kolkowski, Tommi K. Hakala, Andriy Shevchenko, Mikko J. Huttunen
Summary: Optical metasurfaces have revolutionized light manipulation and opened up new opportunities in optics and photonics. Nonlocal metasurfaces, which utilize collective responses of nanoscale building blocks, show great potential in enhancing and controlling nonlinear optical phenomena. This article provides an overview of the principles and functionality of nonlocal metasurfaces, covering multiple scattering, radiation damping, quality factor, local-field enhancement, and temporal dynamics. Computational examples illustrate important aspects, and prospects for future research are discussed.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Stefan R. Anton, Rosa M. Martinez-Ojeda, Radu Hristu, George A. Stanciu, Antonela Toma, Cosmin K. Banica, Enrique J. Fernandez, Mikko J. Huttunen, Juan M. Bueno, Stefan G. Stanciu
Summary: Second Harmonic Generation Microscopy (SHG) is a valuable tool for non-invasively identifying and monitoring changes in collagen structures of tissues. However, the interpretation of SHG data can be challenging, hindering its clinical translation. This study explores the use of Deep Learning models to automatically detect corneal edema in SHG images with promising results, potentially paving the way for precision diagnostics of the cornea with Deep-Learning assisted SHG imaging.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
