Article
Optics
Jian Zhu, Li-na Meng, Guo-jun Weng, Jian-jun Li, Jun-wu Zhao
Summary: The plasmonic absorption properties of bimetallic Au-Pt core-shell nanorods were investigated theoretically, with a focus on the environmental dielectric constant's impact on the absorption intensity comparison between different peaks. Increasing the environmental dielectric constant can enhance the absorption discrepancy between the Pt-L and Au-T bands, improving refractive index sensing performance. This sensing can be further improved by increasing the Pt coating thickness or aspect ratio of inner Au nanorod.
EUROPEAN PHYSICAL JOURNAL D
(2021)
Article
Optics
Di Liu, Yingying Ren, Yanyan Huo, Yangjian Cai, Tingyin Ning
Summary: We numerically studied the linear and nonlinear optical responses in metasurfaces made of Au double-gap split ring resonators (DSRRs). We observed symmetry-protected dual bound states in the continuum (BICs) in these plasmonic metasurfaces at near-infrared optical frequencies. Efficient second harmonic generation (SHG) was achieved at the quasi-BIC modes due to symmetry breaking. Our results suggest that these plasmonic metasurfaces have great potential applications in on-chip efficient frequency conversion and linear and nonlinear chiral manipulation.
Article
Chemistry, Multidisciplinary
Xian-Xin Wu, Wen-Yu Jiang, Xiao-Feng Wang, Li-Yun Zhao, Jia Shi, Shuai Zhang, Xinyu Sui, Zhe-Xue Chen, Wen-Na Du, Jian-Wei Shi, Qian Liu, Qing Zhang, Yong Zhang, Xin-Feng Liu
Summary: We have developed an efficient inch-scale SHG source through a solution-processed method by assembling gold nanoparticles with porous anodic alumina templates. Our device achieves multiresonance in both visible and near-infrared regions, providing strong electric field enhancement at the gap region. The SHG radiation produced is polarization-independent and shows wide-angle nonlinear response thanks to the unique geometry of the nanostructure.
Article
Engineering, Electrical & Electronic
Kai Guo, Keya Zhou, Wei Liu, Zhongyi Guo
Summary: In this study, plasmonic toroidal dipole resonance was observed in core-shell nanodisks, leading to enhanced second harmonic generation (SHG). The frequency of this SHG is dependent on the refractive index of the dielectric core, with a red shift as the index increases. The findings could potentially contribute to the development of nonlinear nanooptics and their practical applications.
IEEE PHOTONICS JOURNAL
(2021)
Article
Physics, Multidisciplinary
Mina Rashidi, Nader Daneshfar
Summary: This study theoretically investigates the second harmonic generation in a hybrid nanosystem composed of two metallic nanoparticles and a semiconductor quantum dot. The system is subjected to a laser electric field as a probe field to produce two-photon absorption in the quantum dot, responsible for the second-order nonlinear process. The impact of various factors on the intensity of the second harmonic signal, including the probe laser field, the control field, the embedding medium's dielectric constant, and the separation distance between the quantum dot and nanoparticles, is demonstrated and discussed.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Chemistry, Multidisciplinary
Yoonsoo Rho, SeokJae Yoo, Daniel B. Durham, DongJun Kang, Andrew M. Minor, Costas P. Grigoropoulos
Summary: Nonlinear optical response is a useful tool for studying the properties of materials, but its weak signal and limited reach make it difficult to probe deep-subwavelength-scale nonlinear optics. In this study, we propose a new method using an SHG-active plasmonic nanotip to achieve efficient second harmonic generation (SHG) nanoscopy. Our simulations suggest that enhancing the nonlinear response of the sample or suppressing the tip's response can lead to a high near-field SHG contrast, providing evidence of quantum mechanical nonlinear energy transfer. Furthermore, this technique can be used to study nanoscale corrosion and other physicochemical phenomena.
Article
Chemistry, Multidisciplinary
Mario Kupresak, Xuezhi Zheng, Raj Mittra, Guy A. E. Vandenbosch, Victor V. Moshchalkov
Summary: In light of the emergence of nonclassical effects, a paradigm shift in the conventional macroscopic treatment is required to accurately describe the interaction between light and plasmonic structures with deep-nanometer features. Several nonlocal response models have been introduced, investigating the collective motion of the free electron gas in metals. The study focuses on the dipole-excited core-shell nanoparticle and compares the predictions of different models with those obtained via the classical approach.
NANOSCALE ADVANCES
(2022)
Article
Optics
Mingyi Ji, Zhaofu Qin, Hao Chen, Taozheng Hu, Zhuo Chen, Peng Zhan
Summary: This theoretical study investigates the second-harmonic generation from doubly-resonant metasurfaces composed of U-shaped and rectangular apertures on an optically opaque gold film. By engineering the plasmonic resonances of the composite metasurfaces to match the excitation and second-harmonic wavelengths, a nearly one order of magnitude enhancement in SHG intensity is achieved compared to singly-resonant U-apertures. Furthermore, the doubly-resonant condition can be extended to a wide wavelength range by changing the refractive index of the surrounding medium, benefiting from the two-fold relationship between the fundamental plasmonic resonances. Our work provides a new approach to enhance the efficiency of nonlinear harmonic generation.
OPTICS COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Qing Leng, Huanhuan Su, Jianqiang Liu, Lin Zhou, Kang Qin, Qianjin Wang, Junqi Fu, Shan Wu, Xuejin Zhang
Summary: The study investigates the second-harmonic generation of monolayer transition metal dichalcogenides on suspended silver film, showing a significant enhancement of the SHG signal. The enhancement is attributed to the electric field amplification induced by symmetric surface plasmon polaritons (SPPs) in the silver grating.
Article
Optics
Di Liu, Xin Li, Yanyan Huo, Shouzhen Jiang, Qingyang Yue, Tingyin Ning
Summary: In this study, we investigated the nonlinear optical harmonic generation behaviors near the bound-states in the continuum (BICs) in hybrid plasmonic-photonic structures. We determined the high dependence of nonlinear response on the local field distribution and tensor components of susceptibility of nonlinear materials. The results are important for understanding the nonlinear response behaviors in hybrid plasmonic-photonic structures and designing nonlinear photonic devices.
Article
Chemistry, Multidisciplinary
Junjun Shi, Xiaobo He, Wen Chen, Yang Li, Meng Kang, Yangjian Cai, Hongxing Xu
Summary: A dual cavity resonance scheme with remote excitation is developed to significantly enhance SHG in a nanobelt system. The enhancement is achieved through the cooperation of plasmonic and FP cavity modes.
Article
Chemistry, Physical
Francois Aguillon, Andrei G. Borisov
Summary: In this work, the impact of atomic scale lattice imperfections on the nonlinear response of graphene nanoflakes enhanced by resonance between electromagnetic fields and localized plasmon is investigated theoretically. Using the many-body time-dependent density matrix approach, it is found that a single defect in nanoflakes with thousands of carbon atoms can significantly affect the nonlinear hyperpolarizability and override symmetry constraints. This effect cannot be captured by the relaxation time approximation in quantum or classical frameworks. The results of this study have important implications for the design of nonlinear graphene devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Yoshito Y. Tanaka, Tomoya Kimura, Tsutomu Shimura
Summary: A pair of V and Y-shaped gold nanoparticles are able to emit second harmonic (SH) radiation perpendicularly to the incident light direction, and the phase of this emission can be modulated by altering the shape of the Y-particle. This approach can be used to engineer directional nonlinear nanoantennas and nonlinear metamaterials.
Article
Nanoscience & Nanotechnology
Florian Spreyer, Jungho Mun, Hyeohn Kim, Ryeong Myeong Kim, Ki Tae Nam, Junsuk Rho, Thomas Zentgraf
Summary: The study found that helicoid-III nanoparticles exhibit strong chiroptical responses in both the linear and nonlinear optical regime, and these responses can be quantified through calculations. The results demonstrate that the chirality of the helicoid-III nanoparticles is significantly enhanced in the nonlinear regime.
Article
Optics
Nader Daneshfar, Zeinab Noormohammadi
Summary: This paper investigates the linear and nonlinear optical response of spherical plasmonic nanoshells within the nonlocal hydrodynamical model for conduction electrons, focusing on the optical absorption and surface second-harmonic generation (SHG) associated with metallic core-shell nanoparticles. The study shows that nonlocal effects can enhance SHG from plasmonic nanoshells, lead to surface SHG radiation from nanoshell surfaces, and influence the resonant wavelengths of optical absorption and SHG in metal nanoshells.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Physical
Isabelle Russier-Antoine, Hye Jin Lee, Alastair W. Wark, Jeremy Butet, Emmanuel Benichou, Christian Jonin, Olivier J. F. Martin, Pierre-Francois Brevet
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Materials Science, Multidisciplinary
Cedric Ray, Mathieu Caillau, Christian Jonin, Emmanuel Benichou, Christophe Moulin, Estelle Salmon, Melissa E. Maldonado, Anderson S. L. Comes, Virginie Monnier, Emmanuelle Laurenceau, Jean-Louis Leclercq, Yann Chevolot, Thierry Delair, Pierre-Francois Brevet
Article
Chemistry, Physical
Albert S. Reyna, Isabelle Russier-Antoine, Franck Bertorelle, Emmanuel Benichou, Philippe Dugourd, Rodolphe Antoine, Pierre-Francois Brevet, Cid B. de Araujo
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Chemistry, Physical
Renata Costa, Carlos M. Pereira, A. Fernando Silva, Pierre-Francois Brevet, Emmanuel Benichou
JOURNAL OF PHYSICAL CHEMISTRY B
(2020)
Article
Optics
Lucile Sanchez, Aurelie Bruyere, Oriane Bonhomme, Emmanuel Benichou, Pierre-Francois Brevet
Article
Chemistry, Physical
Krzysztof Nadolski, Emmanuel Benichou, Nina Tarnowicz-Staniak, Andrzej Zak, Christian Jonin, Katarzyna Matczyszyn, Pierre-Francois Brevet
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Materials Science, Multidisciplinary
Oswaldo Sanchez-Dena, Zacharie Behel, Estelle Salmon, Emmanuel Benichou, Jorge-Alejandro Reyes-Esqueda, Pierre-Francois Brevet, Christian Jonin
Article
Chemistry, Physical
Antonin Pardon, Oriane Bonhomme, Clotilde Gaillard, Pierre-Francois Brevet, Emmanuel Benichou
Summary: The homologous series of ionic liquids [CnC(1)im][NTf2] with different alkyl chain lengths was studied using polarization-resolved second harmonic scattering (SHS). The analysis revealed an octupolar contribution dominating the SHS response, with orientational correlations observed on the nanometer scale even for the shortest alkyl chain length. There was a sharp transition in correlation range between ionic liquids with n = 4 and n = 6, indicating the dominant role of the alkyl chains.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Multidisciplinary Sciences
Guillaume Revillod, Julien Duboisset, Isabelle Russier-Antoine, Emmanuel Benichou, Christian Jonin, Pierre-Francois Brevet
Summary: A general model has been developed to describe the polarization-resolved second harmonic scattering (SHS) response from a liquid solution of molecular aggregates, considering both coherent and incoherent contributions based on the spatial order of the molecules. The model shows that the SHS response can differentiate between centrosymmetric and non-centrosymmetric spatial arrangements of the nonlinear dipoles, providing insights into the spatial arrangements of dyes in aggregates despite their small nanoscale dimensions.
Article
Chemistry, Physical
O. Bonhomme, L. Sanchez, E. Benichou, P. F. Brevet
Summary: Processes involving a reduced number of molecules in solution are difficult to characterize, but can be investigated using SHS to study surfactant micellization before reaching the critical micellar concentration. The experimental results are explained by a simple model based on chemical equilibria between monomers and micelles, and polarization resolved experiments reveal long-range molecular orientation correlation.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Article
Chemistry, Physical
Guillaume Le Breton, Oriane Bonhomme, Emmanuel Benichou, Claire Loison
Summary: Second harmonic scattering (SHS) is a preferred method for investigating the molecular structure of liquids. However, quantitatively interpreting the scattering due to solvents remains difficult. In this study, a quantum mechanics/molecular mechanics (QM/MM) approach was used to model the polarization-resolved SHS intensity of liquid water and quantify different contributions to the signal. It was found that fluctuations and correlations in molecular hyperpolarizability play a significant role in determining the scattering intensities.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Physical
Guillaume Le Breton, Oriane Bonhomme, Emmanuel Benichou, Claire Loison
Summary: In this study, electronic gamma(2 omega, omega, omega,0) and beta(2 omega, omega, omega) for water molecules in liquid water are computed using QM/MM calculations. The average value of gamma(2 omega, omega, omega,0) is smaller in the liquid phase compared to the gas phase, with a relatively small standard deviation among molecules. The study demonstrates that the average bulk second hyperpolarizability gamma(2 omega, omega, omega,0) can be used to describe the electrostatic effects of the distant neighborhood on the first hyperpolarizability beta(2 omega, omega, omega).
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Guillaume Le Breton, Oriane Bonhomme, Pierre-Francois Brevet, Emmanuel Benichou, Claire Loison
Summary: Surface Second-Harmonic Generation (S-SHG) experiments offer a unique method to probe interfaces, with the interpretation of S-SHG intensities at the molecular level being a key issue. Research shows that the first hyperpolarizability of water molecules is highly sensitive to their environment, varying with distance relative to the interface.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Proceedings Paper
Nanoscience & Nanotechnology
Anthony Maurice, Zacharie Behel, Isabelle Russier-Antoine, Emmanuel Benichou, Christian Jonin, Pierre-Francois Brevet
SYNTHESIS AND PHOTONICS OF NANOSCALE MATERIALS XVII
(2020)
Proceedings Paper
Optics
Mathieu Caillau, Celine Chevalier, Pierre Cremillieu, Thierry Delair, Olivier Soppera, Benjamin Leuschel, Cedric Ray, Christophe Moulin, Christian Jonin, Emmanuel Benichou, Pierre-Francois Brevet, Christelle Yeromonahos, Emmanuelle Laurenceau, Yann Chevolot, Jean-Louis Leclercq
OPTICAL MICROLITHOGRAPHY XXXI
(2018)