Article
Nanoscience & Nanotechnology
Marie S. Rider, Rakesh Arul, Jeremy J. Baumberg, William L. Barnes
Summary: The strong coupling between molecules and surface plasmons allows for long-range molecular energy transfer, with gratings playing a crucial role in breaking the translational invariance of the system and facilitating the coupling between molecules and surface plasmons.
Article
Optics
Hugo Bruhier, Isabelle Verrier, Thiaka Gueye, Christelle Varenne, Amadou Ndiaye, Olivier Parriaux, Colette Veillas, Stephanie Reynaud, Jerome Brunet, Yves Jourlin
Summary: This study deeply analyzes the influence of the roughness of shallow or deep metallic diffraction gratings on the propagation of surface plasmon mode along the metallic-air interface. It is found that the scattering losses lead to a spectral or angular broadening of the surface plasmon resonance (SPR) and a shift of the resonance wavelength and coupling angle. These effects need to be overcome when using such structures, especially deep ones, as SPR-based sensors.
Article
Optics
Hugo Bruhier, Julie Dutems, Emilie Laffont, Nicolas Crespo-Monteiro, Isabelle Verrier, Olivier Parriaux, Pierre Berini, Yves Jourlin
Summary: A deep metal grating allows for simultaneous excitation of two counterpropagating surface plasmon modes using diffraction orders. The resulting angular reflection spectra exhibit three interleaved zeros and maxima. This new surface plasmon resonance sensing scheme shows high sensitivity and a limit of detection of 2 x 10-7 refractive index unit (RIU) was achieved.
Article
Physics, Multidisciplinary
Seyed Mohsen Mohebbi Nodez, Masoud Jabbari, Ghahraman Solookinejad
Summary: In order to enhance the absorption in the near-infrared region, a new technique using multiple gratings on the backside of the cell has been presented in this paper. The gratings on the backside lead to absorption enhancement by exciting localized surface plasmons and light scattering. By accurately determining the dimensions of the gratings, the resonance wavelength of surface plasmons can be adjusted. Multiple gratings increase the absorption in the near-infrared region near three folds, and the highest average absorption of 68.46% has been achieved using five gratings.
Article
Engineering, Electrical & Electronic
Yuying Wang, Aibibula Abudula, Zhijun Sun
Summary: The proposed digital multiplexing rectangular metal gratings exhibit excellent plasmonic resonance properties, suitable for various structure and material systems, and can generate performance-optimized multiplexed gratings through OR-operation.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Optics
Aibibula Abudula, Zhijun Sun
Summary: Utilizing multiplexed gratings in a plasmonic waveguide structure enables the realization of multiple independent resonance modes, offering advantages in controlling and enhancing light-matter interactions. By adjusting the structure parameters of the gratings, the resonance positions and intensities can be independently tuned, allowing for the fabrication of arbitrarily adjustable doublet or triplet resonance modes in experimental demonstrations.
OPTICS COMMUNICATIONS
(2022)
Article
Physics, Applied
Aibibula Abudula, Zhijun Sun
Summary: This report presents a metallic grating-incorporated Fabry-Perot cavity structure that exhibits asymmetric optical transmission (AOT) regardless of transmission modes. The asymmetric transmission is mainly attributed to the asymmetric coupling and decoupling of resonant surface plasmons (SPs) on both sides of the metallic grating with asymmetric media of different refractive indices. Additionally, by coupling the SP mode with the anti-resonance mode of the F-P cavity in orthogonal directions, the transmission characteristics of the structure for asymmetric transmission are further optimized, leading to a high contrast AOT achieved by locating the SP resonance position at the center of the anti-resonance band of the F-P cavity.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Jie Han, Yuehong Xu, Huifang Zhang, Yuanhao Lang, Xiaohan Jiang, Xieyu Chen, Xi Feng, Li Niu, Yanfeng Li, Xueqian Zhang, Quan Xu, Quan Li, Jiaguang Han, Weili Zhang
Summary: A new directional coupling strategy for controlling surface plasmons (SPs) by utilizing interference effects between different resonance responses of slit resonators is introduced. The strategy demonstrates versatile design capability and flexibility in various polarized incidence situations. This approach paves the way for practical on-chip applications in developing innovative and on-demand plasmonic devices.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Optics
Yunqing Jiang, Hongqing LI, Xiaoqiang Zhang, Fan Zhang, Yong Xu, Yongguang Xiao, Fengguang Liu, Anting Wang, Qiwen Zhan, Weisheng Zhao
Summary: The Tamm plasmon coupling (TPC) between spin THz thin films and photonic crystal structures is achieved, resulting in enhanced THz radiation. Simulation results show that the absorptance of spin THz thin films with TPC can be increased from 36.8% to 94.3%. Experimental results demonstrate a 264% enhancement in THz radiation. This approach offers possibilities for ultrafast THz optospintronics and other similar devices.
PHOTONICS RESEARCH
(2023)
Article
Physics, Applied
Fangyuan Liu, Tuyu Yin, Yu Liu, Iqbal Naeem, Dan Guo, Libin Cui, Tianrui Zhai
Summary: In this work, multiple-beam colloidal quantum dot lasers are achieved in a double waveguide-grating (W-G-W) microcavity using interference lithography. The low-threshold multiple-beam laser output with emission peaks at 664.6 and 645.2 nm is realized under optical pumping. The presence of quasi-propagation modes provides a method for designing compact laser sources.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Zhengchen Liang, Dong Wang, Mario Ziegler, Uwe Hubner, Peng Xie, Qi Ding, Hong Zhang, Wei Wang
Summary: This study demonstrates the design and fabrication of a 2D periodic multilayer metal-dielectric-metal (MDM) nanostructure to achieve a tunable superradiant mode in the visible range, showing a broad superradiance by controlling spectral three-mode overlap. The research reveals the significant reduction of polariton lifetimes down to 4 fs through Rabi phases and incoherent coupling between subsystems.
LASER & PHOTONICS REVIEWS
(2022)
Article
Optics
Qiuxiang Zhu, Weichu Xiao, Wenguo Li, Lincheng Zhang, Yaqi Deng, Xuejun Zhang, Zhengbo Jian, Xiuxiu Dong
Summary: Investigating the coupling mechanism between surface plasmons and excitons is crucial for achieving efficient and stable excitonic optoelectronic devices. By sputtering Au nanoparticles on CdS microbelts, the energy coupling effect mediated by surface plasmons was explored, leading to enhanced excitonic emission intensity and red-shift of peaks in Fabry-Perot resonant lasing spectra. The temperature-dependent photoluminescence analysis indicated that the optical phenomenon may be attributed to the exciton-phonon coupling.
Article
Optics
L. Avalos, A. K. Gonzalez-Alcalde, E. Chaikina, E. E. Garcia-Guerrero, A. A. Maradudin, E. R. Mendez
Summary: The study investigates the optical properties of metallic lamellar gratings with sub-wavelength period as a function of groove depth and width. Anomalies are observed under p-polarized illumination due to the excitation of surface plasmon polaritons (SPPs) and their interaction with plasmonic and photonic modes. The propagation constant of SPPs is affected by the presence of corrugations, with new resonances appearing for grooves deeper than half a wavelength.
OPTICS COMMUNICATIONS
(2021)
Article
Optics
Da-Jie Yang, Song-Jin Im, Hai-Wen Huang, Chol-Song Ri, Kum-Dong Kim, Kil-Song Song, Ji-Cai Liu, Qu-Quan Wang
Summary: This paper reveals the effects of structured light carrying orbital angular momentum (OAM) on surface plasmons, showing anomalous plasmon excitations and couplings under OAM beams. The excitation of single particles is determined by both photon spin angular momentum (SAM) and OAM, and is influenced by particle locations. Fano resonance is observed in a nanorod dimer, with one rod aligned along light propagation direction as the bright mode and the other aligned along global polarization direction as the dark mode.
PHOTONICS RESEARCH
(2023)
Article
Optics
Yousef Alattar, Guy Kember, Michael Cada
Summary: The study develops an original asymptotic method to find closed-form approximations to the symmetric thin-film three- and multi-layer plasmonic dispersion equations, revealing complementary physics underlying the properties of different devices. Analysis of multi-layer devices shows a remarkable departure from the physics governing MIM and IMI features.
