Article
Chemistry, Multidisciplinary
Yin Liu, Sze Cheung Lau, Wen-Hui Cheng, Amalya Johnson, Qitong Li, Emma Simmerman, Ouri Karni, Jack Hu, Fang Liu, Mark L. Brongersma, Tony F. Heinz, Jennifer A. Dionne
Summary: In this study, integration of MoS2 monolayers with a chiral silicon disk array metasurface is used to enhance and control the absorption and emission of excitons in two-dimensional transition metal dichalcogenides. The metasurface coupling enhances the intensity and shortens the lifetime of excitons, trions, and defect bound excitons, and also modifies their spectral shape. Furthermore, the degree of polarization of exciton and trion emission from the valley is symmetrically enhanced at 100 K, resulting from the metasurface-enhanced chiral absorption and the metasurface-enhanced exciton emission from the Purcell effect. The combination of Si-compatible photonic design and large-scale integration of 2D materials in this work is a crucial step towards on-chip valleytronic applications at room temperature.
Article
Optics
Zhiwei Cui, Wanqi Ma, Shuaishuai Ren, Wenjuan Zhao
Summary: In this study, the researchers propose a method to control the chirality of twisted light using the tunable optical properties of graphene. They develop a theoretical model to investigate the chirality of twisted light reflected from a graphene-substrate interface. The results show that the chirality of twisted light can be flexibly tuned by adjusting the incident angle and the properties of the graphene and substrate materials. This tunable optical chirality has potential applications in various fields including chiral molecular recognition and micromanipulation.
OPTICS COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Tianxu Jia, Bingjue Li, Zhaorui Zhang, Bing Gu, Guanghao Rui
Summary: This work demonstrates the generation of superchiral field in free space through multibeam superposition and shows that even achiral light fields can obtain optical chirality through superposition. Circularly polarized light fields can most effectively enhance the optical chirality density in the interference field. The technique is also suitable for combining optical tweezers and CD spectroscopy.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Xiaoyong Yue, Si Li, Hengwei Lin, Chuanlai Xu, Liguang Xu
Summary: In this study, AgxCdyS-AgCd nanoparticles with specific heterojunctions were constructed and stabilized with chiral ligands. These nanoparticles showed excellent enantioselective catalytic ability and provided a versatile way to construct enantioselective inorganic catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Kayn A. Forbes, Dale Green
Summary: In this study, we highlight the enantioselective optical gradient forces in 3D structured optical vortex tweezing systems. One force is due to circular polarization of light, while surprisingly, the other force is independent of input polarization and can even occur for unpolarized light. This chiral sorting mechanism selectively traps chiral particles into distinct rings in the transverse plane using conservative radial forces.
OPTICS COMMUNICATIONS
(2022)
Article
Optics
Xiao Liu, Zelin Ma, Aku Antikainen, Siddharth Ramachandran
Summary: This article introduces the characteristics and applications of stimulated Raman scattering. It is a nonlinear phenomenon that occurs in virtually every material, making it suitable for optical amplification and lasers. However, it can also cause noise and parasitic emission in fiber-based quantum sources and fiber lasers. The authors discover that by controlling the topological charge of light, the spectral shape and intensity of Raman scattering can be adjusted, which is valuable in various applications.
Article
Chemistry, Multidisciplinary
Taeko Matsukata, F. Javier Garcia de Abajo, Takumi Sannomiya
Summary: Research on exciting nanospheres to generate circularly polarized light emission along arbitrary directions further demonstrates the feasibility of using free-electron-induced light emission in applications such as quantum communication and encryption.
Article
Chemistry, Multidisciplinary
Guocheng Deng, Sami Malola, Peng Yuan, Xianhu Liu, Boon K. Teo, Hannu Hakkinen, Nanfeng Zheng
Summary: Surface ligands play critical roles in determining the surface properties of metal clusters. Modulating the properties and controlling the surface structure of clusters through surface-capping-agent displacement is challenging. This work provides a new insight into modulation of the optical properties of metal clusters and atomically precise homochiral clusters for specific applications are obtained.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Review
Medicine, Research & Experimental
Yining Shao, Guilin Yang, Jiaying Lin, Xiaofeng Fan, Yue Guo, Wentao Zhu, Ying Cai, Huiyu Huang, Die Hu, Wei Pang, Yanjun Liu, Yiwen Li, Jiaji Cheng, Xiaoqian Xu
Summary: The rapid development of chiral inorganic nanostructures has expanded to sophisticated assemblies made by organics, metals, semiconductors, and hybrids, with potential applications in various biomedical fields.
Article
Optics
Jiho Hong, Jorik Van De Groep, Nayeun Lee, Soo Jin Kim, Philippe Lalanne, Pieter G. Kik, Mark L. Brongersma
Summary: Modern sensing and imaging applications require accurate measurements of light wave properties such as intensity, wavelength, directionality, and polarization. This study demonstrates the use of engineered optical resonances in nanostructures to achieve selective detection of circularly polarized light. By patterning a thin silicon layer into a dislocated nanowire-array, it is possible to detect circularly polarized light with high efficiency. The presence of periodic dislocations enables selective excitation of nonlocal, guided-mode resonances for one handedness of light.
Article
Chemistry, Multidisciplinary
Ufuk Kilic, Matthew Hilfiker, Alexander Ruder, Rene Feder, Eva Schubert, Mathias Schubert, Christos Argyropoulos
Summary: This article demonstrates how nanohelical metamaterials can achieve spectrally tunable, extremely large, and broadband chiroptical response, addressing the challenges in controlling and enhancing chiral light-matter interactions.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Bingyu Liu, Pengyao Xing
Summary: The folding phenomenon refers to the formation of a specific conformation in biomacromolecules, which is closely related to their intramolecular interactions. Foldamers, oligomeric folded molecules, have potential applications in pharmaceuticals and catalysis, including the transfer and amplification of chirality. Using foldamer models helps to deepen the understanding of the structure-function correlation in biomacromolecules and expand the molecular toolbox in chiroptical and asymmetrical chemistry.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Polymer Science
Jun Su Kang, Namhee Kim, Taehyung Kim, Myungeun Seo, Byeong-Su Kim
Summary: This review discusses the introduction of asymmetry into a supramolecular system via external chiral stimuli and the mechanisms of photon-to-matter chirality transfer at the supramolecular level. It also covers asymmetric photochemical reactions and the creation of a chiral bias upon CPL irradiation.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Gyu Jin Choi, Jeong Won Ryu, Ji-Young Jeong, Tae-Jin Je, Dong Ki Yoon, Jin Seog Gwag
Summary: The study shows that combining an organic light-emitting display (OLED) device with an advanced optical film can achieve highly enhanced light extraction and low ambient light reflection without the need for a polarizer. The optical efficiency of the OLED device with the proposed film has been significantly improved compared to a polarizer-based OLED device, with external light reflection reduced to approximately 10%. Experimental data confirms that the film for enhancing optical efficiency (FEOE) improves the overall optical efficiency of OLED devices, making FEOE-based OLEDs of significant interest in materials science and display devices.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Multidisciplinary Sciences
Hao Xu, Jinglong Lin, Dongxiao Zhang, Fanyang Mo
Summary: The enantioseparation of chiral molecules is challenging in experimental chemistry. This study proposes a research framework using machine learning techniques to predict retention times of enantiomers and facilitate chromatographic enantioseparation. A deep learning model is constructed, incorporating domain knowledge of chromatography to achieve multi-column prediction and improve the efficiency of experimenters in scientific discovery acceleration.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Bo Zhao, Valeria Rodriguez-Fajardo, Xiao-Bo Hu, Raul Hernandez-Aranda, Benjamin Perez-Garcia, Carmelo Rosales-Guzman
Summary: Complex vector light fields have drawn attention recently due to their non-homogeneous transverse polarisation distributions and non-separable coupling between spatial and polarisation degrees of freedom. A new family of vector beams has been introduced with the ability to freely accelerate along parabolic trajectories and transverse polarisation distribution containing polarisation states with same orientation but different ellipticity. These novel vector beams may have applications in fields such as optical manipulation, microscopy or laser material processing.
Article
Multidisciplinary Sciences
Sebastian Toepfer, Marta Gilaberte Basset, Jorge Fuenzalida, Fabian Steinlechner, Juan P. Torres, Markus Grafe
Summary: Holography uses interference of a light field to reconstruct the spatial shape of an object, but traditional methods are limited by detection constraints outside the visible range. By implementing phase-shifting holography with nonclassical states of light and quantum interference between two-photon probability amplitudes, it is possible to overcome these limitations and retrieve the spatial shape of transmitted/reflected photons from the object.
Article
Optics
Arturo Villegas, Mario A. Quiroz-Juarez, Alfred B. U'Ren, Juan P. Torres, Roberto de J. Leon-Montiel
Summary: In this study, we propose and demonstrate a smart laser-diffraction analysis technique for identifying particle mixtures. By using model particles, we accurately retrieve information about two-component heterogeneous mixtures with high accuracy. The method simplifies implementation and paves the way for the development of novel smart identification technologies.
Correction
Optics
Isaac Nape, Keshaan Singh, Asher Klug, Wagner Buono, Carmelo Rosales-Guzman, Amy McWilliam, Sonja Franke-Arnold, Ane Kritzinger, Patricia Forbes, Angela Dudley, Andrew Forbes
Article
Optics
Isaac Nape, Keshaan Singh, Asher Klug, Wagner Buono, Carmelo Rosales-Guzman, Amy McWilliam, Sonja Franke-Arnold, Ane Kritzinger, Patricia Forbes, Angela Dudley, Andrew Forbes
Summary: Structured light is robust against disturbances in optical systems and remains immune to polarization inhomogeneity even in non-ideal conditions. This property allows for versatile applications in imaging and optical communication across noisy channels.
Article
Physics, Multidisciplinary
Andrea Aiello, Xiao-Bo Hu, Valeria Rodriguez-Fajardo, Andrew Forbes, Raul Hernandez-Aranda, Benjamin Perez-Garcia, Carmelo Rosales-Guzman
Summary: This study introduces a new measure for quantifying the inhomogeneity of the polarization structure in non-separable structured light. It demonstrates how the new measure correctly accounts for the path-like separability of scalar beams, which can have varying degrees of disjointness.
NEW JOURNAL OF PHYSICS
(2022)
Article
Optics
Benjamin Perez-Garcial, Francisco Mecillas-Hernandez, Carmelo Rosales-Guzman
Summary: Complex vector modes of light, which are non-separable in both spatial and polarization degrees of freedom, are revolutionizing various research fields. Generating techniques for these modes have evolved dramatically, with computer-controlled devices such as digital micromirror devices becoming popular due to their low cost, polarization insensitivity, and high-refresh rates. In this manuscript, a novel technique utilizing a common-path interferometer is proposed, which achieves high stability. The experimental demonstrations include generating arbitrary vector modes on a higher-order Poincare sphere, generating vector modes in different coordinate systems, and generating various vector modes simultaneously. This technique has potential applications in optical manipulations, optical communications, optical metrology, and other fields.
Article
Multidisciplinary Sciences
Xiao-Bo Hu, Bo Zhao, Rui-Pin Chen, Carmelo Rosales-Guzman
Summary: Complex vector modes are optical states that are nonseparable in their spatial and polarization degrees of freedom, and exhibit unexpected propagation behaviors. This study introduces a novel class of vector modes with the ability to experience abrupt autofocusing behavior, and demonstrates their properties, including intermodal phase rotation, through experimental generation of circular Airy Gaussian vortex (CAGV) beams. The fascinating properties of these modes are expected to drive the development of new applications associated with autofocusing behavior and polarization distribution.
SCIENTIFIC REPORTS
(2022)
Article
Optics
E. Otte, V. Bobkova, S. Trinschek, C. Rosales-Guzman, C. Denz
Summary: In this study, a novel technique for determining the OAM spectrum of light in a single measurement shot is proposed, specifically applicable to distorted light fields. By interfering the perturbed light field with a reference field, the accurate OAM spectrum is determined in an all-digital way.
Editorial Material
Physics, Multidisciplinary
Shiyao Fu, Hailu Luo, Carmelo Rosales-Guzman
FRONTIERS IN PHYSICS
(2023)
Article
Optics
Chun-Yu Li, Si-Jia Liu, Bing-Shi Yu, Hai-Jun Wu, Carmelo Rosales-Guzman, Yijie Shen, Peng Chen, Zhi-Han Zhu, Yan-Qing Lu
Summary: Reciprocal spin-orbit coupling with flat optics has the potential to shape and control structured light. Current devices only modulate wavefronts without amplitude control. To address this issue, structured geometric phase gratings are introduced, allowing control of complex amplitudes for orthogonal circular polarizations. This unlocks full-field control of paraxial structured light via flat optics.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Xiao-Bo Hu, Bo Zhao, Rui-Pin Chen, Carmelo Rosales-Guzman
Summary: This Letter presents a longitudinal spin-orbit separation of complex vector modes by manipulating the intrinsic parameters of circular Airy Gaussian vortex vector (CAGVV) modes. Numerical simulations and experimental results demonstrate the adjustable spin-orbit separation along the propagation direction. This finding has significant relevance in applications such as optical tweezers for manipulating particles at different planes.
Article
Optics
Fernando Torres-Leal, Hugo A. Moreno-Rodriguez, Juan P. Rubio-Perez, Raul I. Hernandez-Aranda, Carmelo Rosales-Guzman, Benjamin Perez-Garcia
Summary: This study presents a low-cost method for generating structured light fields and demonstrates its potential in generating different modes of light beams and solving the phase retrieval problem.
Article
Optics
Edgar Medina-Segura, Leonardo Miranda-Culin, Valeria Rodriguez-Fajardo, Benjamin Perez-Garcia, Carmelo Rosales-Guzman
Summary: In this work, a new family of vector beams called helico-conical vector beams (HCVBs) is proposed and experimentally demonstrated. The spatial degree of freedom of the beams is encoded in the helico-conical optical beams. The study finds that the transverse polarization distribution of the beams evolves from nonhomogeneous to quasihomogeneous during propagation. The Hellinger distance metric is used to quantitatively verify this behavior. HCVBs are the second family of vector beams to exhibit this behavior, which opens up possibilities for applications in optical tweezing or information encryption.
Article
Optics
Arturo Rojas-Santana, Gerard J. Machado, Maria V. Chekhova, Dorilian Lopez-Mago, Juan P. Torres
Summary: This study analyzes and compares the output signals obtained in three different configurations of optical coherence tomography (OCT) in order to evaluate the performance of different configurations in extracting information about the sample. The configurations include standard OCT and two types of OCT schemes based on nonlinear interferometers, with the optical sectioning of the sample achieved by measuring the output signal spectrum.
