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Optics at Surfaces
Contents
Optics at Surfaces
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35 Article(s)
Control amplitude and phase of light by plasmonic meta-hologram with T-shaped nano-cavity
Wei Song, Shanguang Zheng, Yanan Fu, Changjun Min, Yuquan Zhang, Zhenwei Xie, and Xiaocong Yuan
Controlling both amplitude and phase of light in the subwavelength scale is a challenge for traditional optical devices. Here, we propose and numerically investigate a novel plasmonic meta-hologram, demonstrating broadband manipulation of both phase and amplitude in the subwavelength scale. In the meta-hologram, phase modulation is achieved by the detour phase distribution of unit cells, and amplitude is continuously modulated by a T-shaped nano-cavity with tunable plasmonic resonance. Compared to phase-only holograms, such a meta-hologram could reconstruct three-dimensional (3D) images with higher signal-to-noise ratio and better image quality, thus offering great potential in applications such as 3D displays, optical communications, and beam shaping.
Controlling both amplitude and phase of light in the subwavelength scale is a challenge for traditional optical devices. Here, we propose and numerically investigate a novel plasmonic meta-hologram, demonstrating broadband manipulation of both phase and amplitude in the subwavelength scale. In the meta-hologram, phase modulation is achieved by the detour phase distribution of unit cells, and amplitude is continuously modulated by a T-shaped nano-cavity with tunable plasmonic resonance. Compared to phase-only holograms, such a meta-hologram could reconstruct three-dimensional (3D) images with higher signal-to-noise ratio and better image quality, thus offering great potential in applications such as 3D displays, optical communications, and beam shaping.
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Chinese Optics Letters
Publication Date: Jun. 10, 2019
Vol. 17, Issue 6, 062402 (2019)
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Detecting molecular vibrational modes of side chains and endpoints in nanoscale proteins with graphene plasmon
Chenchen Wu, Ning Liu, Hai Hu, Xiangdong Guo, Baoxin Liao, Jiaming Liu, Liming Wang, Chunying Chen, Xiaoxia Yang, and Qing Dai
Monitoring the chemical and structural changes in protein side chains and endpoints by infrared (IR) spectroscopy is important for studying the chemical reaction and physical adsorption process of proteins. However, the detection of side chains and endpoints in nanoscale proteins is still challenging due to its weak IR response. Here, by designing a double layered graphene plasmon sensor on MgF2/Si substrate in the IR fingerprint region, we detect the vibrational modes in side chains and endpoints (1397 cm 1 and 1458 cm 1) of monolayer protein. The sensor could be applied on biochemistry to investigate the physical and chemical reaction of biomolecules.
Monitoring the chemical and structural changes in protein side chains and endpoints by infrared (IR) spectroscopy is important for studying the chemical reaction and physical adsorption process of proteins. However, the detection of side chains and endpoints in nanoscale proteins is still challenging due to its weak IR response. Here, by designing a double layered graphene plasmon sensor on MgF2/Si substrate in the IR fingerprint region, we detect the vibrational modes in side chains and endpoints (1397 cm 1 and 1458 cm 1) of monolayer protein. The sensor could be applied on biochemistry to investigate the physical and chemical reaction of biomolecules.
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Chinese Optics Letters
Publication Date: Jun. 10, 2019
Vol. 17, Issue 6, 062401 (2019)
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Parametric resonances in nonlinear plasmonics [Invited]
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On the Cover
Shima Fardad, Eric Schweisberger, and Alessandro Salandrino
In the context of nonlinear plasmonics, we review the recently introduced concept of plasmonic parametric resonance (PPR) and discuss potential applications of such phenomena. PPR arises from the temporal modulation of one or more of the parameters governing the dynamics of a plasmonic system and can lead to the amplification of high-order sub-radiant plasmonic modes. The theory of PPR is reviewed, possible schemes of implementation are proposed, and applications in optical limiting are discussed.
In the context of nonlinear plasmonics, we review the recently introduced concept of plasmonic parametric resonance (PPR) and discuss potential applications of such phenomena. PPR arises from the temporal modulation of one or more of the parameters governing the dynamics of a plasmonic system and can lead to the amplification of high-order sub-radiant plasmonic modes. The theory of PPR is reviewed, possible schemes of implementation are proposed, and applications in optical limiting are discussed.
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Chinese Optics Letters
Publication Date: Dec. 05, 2019
Vol. 17, Issue 12, 122402 (2019)
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Broadband mid-IR antireflective Reuleaux-triangle-shaped hole array on germanium
Haijuan Cheng, Miao Dong, Qinwen Tan, Linghai Meng, Yi Cai, Jie Jiang, Weisheng Yang, Haizheng Zhong, and Lingxue Wang
A gradient-index Reuleaux-triangle-shaped hole array was fabricated on germanium (Ge) by nanoimprint lithography and inductively coupled plasma processing as a broadband mid-infrared (IR) antireflective surface. The interaction between the {111} planes of cubic crystalline Ge and a circular mold successfully produced an orderly and periodically distributed Reuleaux-triangle-shaped hole array. As a result, the average transmittance increased 15.67% over the waveband at 3–12 μm and remained stable at the incidence angle of up to 60°. The vertices of the Reuleaux triangle showed local enhancement of the electric field intensities due to interference of the incident and reflected radiation fields. It was also found that nonuniform hole depths acted to modulate the transmittance over the 3–12 μm waveband.
A gradient-index Reuleaux-triangle-shaped hole array was fabricated on germanium (Ge) by nanoimprint lithography and inductively coupled plasma processing as a broadband mid-infrared (IR) antireflective surface. The interaction between the {111} planes of cubic crystalline Ge and a circular mold successfully produced an orderly and periodically distributed Reuleaux-triangle-shaped hole array. As a result, the average transmittance increased 15.67% over the waveband at 3–12 μm and remained stable at the incidence angle of up to 60°. The vertices of the Reuleaux triangle showed local enhancement of the electric field intensities due to interference of the incident and reflected radiation fields. It was also found that nonuniform hole depths acted to modulate the transmittance over the 3–12 μm waveband.
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Chinese Optics Letters
Publication Date: Dec. 10, 2019
Vol. 17, Issue 12, 122401 (2019)
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Optical rectification in surface layers of germanium
Li Zhang, Fangye Li, Shuai Wang, Qi Wang, Kairan Luan, Xi Chen, Xiuhuan Liu, Lingying Qiu, Zhanguo Chen, Jihong Zhao, Lixin Hou, Yanjun Gao, and Gang Jia
In this Letter, we have demonstrated significant electric field induced (EFI) optical rectification (OR) effects existing in the surface layers of germanium (Ge) and measured the distributions of EFI OR signals along the normal directions of surface layers of Ge samples. Based on the experimental results, the ratios of the two effective second-order susceptibility components χzzz(2eff)/χzxx(2eff) for Ge(001), Ge(110), and Ge(111) surface layers can be estimated to be about 0.92, 0.91, and 1.07, respectively. The results indicate that the EFI OR can be used for analyzing the properties on surface layers of Ge, which has potential applications in Ge photonics and optoelectronics.
In this Letter, we have demonstrated significant electric field induced (EFI) optical rectification (OR) effects existing in the surface layers of germanium (Ge) and measured the distributions of EFI OR signals along the normal directions of surface layers of Ge samples. Based on the experimental results, the ratios of the two effective second-order susceptibility components χzzz(2eff)/χzxx(2eff) for Ge(001), Ge(110), and Ge(111) surface layers can be estimated to be about 0.92, 0.91, and 1.07, respectively. The results indicate that the EFI OR can be used for analyzing the properties on surface layers of Ge, which has potential applications in Ge photonics and optoelectronics.
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Chinese Optics Letters
Publication Date: Oct. 10, 2018
Vol. 16, Issue 10, 102401 (2018)
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Multiple directional enhanced light source through a periodic metal grating structure
Le Yu, Xiao Xiong, Di Liu, Lantian Feng, Ming Li, Linjun Wang, Guoping Guo, Guangcan Guo, and Xifeng Ren
Higher emission rates and controllable emission direction are big concerns when it comes to finding a good single photon source. Recently, surface plasmons are introduced to this application, as they can manipulate and enhance the luminescence of single emitters. Here, we experimentally achieve a wide-area multiple directional enhanced light source through periodic metal grating structures. The surface-plasmon-coupled emission can have multiple precisely emission angles by just changing the period of the grating. Our result indicates that metal plasmonic grating can be used as a productive quantum device for unidirectional quantum light sources in quantum optics.
Higher emission rates and controllable emission direction are big concerns when it comes to finding a good single photon source. Recently, surface plasmons are introduced to this application, as they can manipulate and enhance the luminescence of single emitters. Here, we experimentally achieve a wide-area multiple directional enhanced light source through periodic metal grating structures. The surface-plasmon-coupled emission can have multiple precisely emission angles by just changing the period of the grating. Our result indicates that metal plasmonic grating can be used as a productive quantum device for unidirectional quantum light sources in quantum optics.
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Chinese Optics Letters
Publication Date: Aug. 10, 2017
Vol. 15, Issue 8, 082401 (2017)
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Optical rectification and Pockels effect as a method to detect the properties of Si surfaces
Qi Wang, Li Zhang, Xin Wang, Haiyan Quan, Zhanguo Chen, Jihong Zhao, Xiuhuan Liu, Lixin Hou, Yanjun Gao, Gang Jia, and Shaowu Chen
The depth profile of electric-field-induced (EFI) optical rectification (OR) and EFI Pockels effect (PE) in a Si(110) crystal are investigated. The results show that EFI OR and PE signals are very sensitive to the electric field strength in the surface layers of the Si crystal. Theoretical formulas that include the electric field parameters and the widths of the space-charge region are presented and agreed very well with the experimental results. The experiments and simulations indicate that EFI OR and PE are potential methods for researching the surface/interface properties along the depth direction in centrosymmetric crystals such as Si.
The depth profile of electric-field-induced (EFI) optical rectification (OR) and EFI Pockels effect (PE) in a Si(110) crystal are investigated. The results show that EFI OR and PE signals are very sensitive to the electric field strength in the surface layers of the Si crystal. Theoretical formulas that include the electric field parameters and the widths of the space-charge region are presented and agreed very well with the experimental results. The experiments and simulations indicate that EFI OR and PE are potential methods for researching the surface/interface properties along the depth direction in centrosymmetric crystals such as Si.
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Chinese Optics Letters
Publication Date: Jun. 10, 2017
Vol. 15, Issue 6, 062401 (2017)
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Observing the spin Hall effect of pseudothermal light through weak measurement
Bin Cao, Dong Wei, Pei Zhang, Hong Gao, and Fuli Li
The spin Hall effect of light (SHEL) can be observed by the dark strip resulting from weak measurement. We find that the SHEL of a partially coherent beam (PCB) has a similar phenomenon as well. However, the dark strip in the SHEL of a PCB cannot be explained by considering the beam as an assemblance of coherent speckles. Also, the dark strip in a PCB is not purely dark. By analyzing the autocorrelation, we show that the SHEL of a PCB is the result of overlapping coherent speckles’ SHEL. We further prove our conclusion by adjusting convergence and incident angles. Finally, we develop a qualitative theory to clarify the SHEL of a PCB.
The spin Hall effect of light (SHEL) can be observed by the dark strip resulting from weak measurement. We find that the SHEL of a partially coherent beam (PCB) has a similar phenomenon as well. However, the dark strip in the SHEL of a PCB cannot be explained by considering the beam as an assemblance of coherent speckles. Also, the dark strip in a PCB is not purely dark. By analyzing the autocorrelation, we show that the SHEL of a PCB is the result of overlapping coherent speckles’ SHEL. We further prove our conclusion by adjusting convergence and incident angles. Finally, we develop a qualitative theory to clarify the SHEL of a PCB.
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Chinese Optics Letters
Publication Date: Feb. 10, 2017
Vol. 15, Issue 2, 022401 (2017)
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Propagation properties of the terahertz waveguide using a metallic nanoslit narrower than skin depth
Jie Yang, Gongwei Lin, Yueping Niu, Yihong Qi, Fengxue Zhou, and Shangqing Gong
A terahertz (THz) waveguide using a metallic nanoslit whose width is much smaller than the skin depth is analytically investigated. By taking some important physical properties into account, we derive a simple, yet accurate, expression for the effective index. We also study the changes in modal field and the attenuation coefficient in the whole THz region, and find some interesting physical properties. Finally, we verify that these theoretical analyses coincide with the rigorous numerical simulations. This research can be useful for various applications of THz waveguides made of metallic nanoslits.
A terahertz (THz) waveguide using a metallic nanoslit whose width is much smaller than the skin depth is analytically investigated. By taking some important physical properties into account, we derive a simple, yet accurate, expression for the effective index. We also study the changes in modal field and the attenuation coefficient in the whole THz region, and find some interesting physical properties. Finally, we verify that these theoretical analyses coincide with the rigorous numerical simulations. This research can be useful for various applications of THz waveguides made of metallic nanoslits.
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Chinese Optics Letters
Publication Date: Jul. 10, 2016
Vol. 14, Issue 7, 072401 (2016)
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Influence of surface roughness on surface plasmon resonance phenomenon of gold film
Zhitao Yang, Changjian Liu, Yachen Gao, Jiyu Wang, and Wenlong Yang
We experimentally investigate the effects of the surface roughness of gold thin films on the properties of surface plasmon resonance. By annealing at different temperatures, film samples with different surface morphologies are obtained. Specifically, due to the diffusion of the gold atoms towards the films’ surface, the surface root-mean-square roughness decreases with the increasing annealing temperature. Then, we measure the surface plasmon resonance of the samples. The results show that the resonance angle of the surface plasmon resonance is sensitive to the root-mean-square roughness, and it gradually decreases by reducing the surface root-mean-square roughness.
We experimentally investigate the effects of the surface roughness of gold thin films on the properties of surface plasmon resonance. By annealing at different temperatures, film samples with different surface morphologies are obtained. Specifically, due to the diffusion of the gold atoms towards the films’ surface, the surface root-mean-square roughness decreases with the increasing annealing temperature. Then, we measure the surface plasmon resonance of the samples. The results show that the resonance angle of the surface plasmon resonance is sensitive to the root-mean-square roughness, and it gradually decreases by reducing the surface root-mean-square roughness.
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Chinese Optics Letters
Publication Date: Apr. 10, 2016
Vol. 14, Issue 4, 042401 (2016)
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Topics
3d holographic display
3d imaging and display
Applications
Atmospheric and oceanic optics
Atmospheric, Oceanic, Space, and Environmental Optics
Atomic and Molecular Optics
Atomic and Molecular Physics
Auto-stereography and virtual reality
Biomedical Optics
Biophotonics
Coatings for solar cell
Coherence and statistical optics
COHERENCE OPTICS AND STATISTICAL OPTICS
Computer generated hologram
Computer-generated holography
Deposition and process control
Design and analysis
Detectors
Diffraction and Gratings
Diffraction, Gratings, and Holography
Digital Holography
Duv/euv coatings
Editorial
Fiber Optics and Optical Communications
Fourier optics and optical signal processing
Fourier Optics and Signal Processing
General
Geometric Optics
Geometrical optics
Holographic reconstruction, display,and projection
Holography
Image processing
Image Processing and Machine Vision
Imaging Systems
Imaging Systems and Image Processing
Infrared and Terahertz Photonics
Instrumentation, measurement, and metrology
Instrumentation, Measurement, and Optical Sensing
Integral imaging
Integrate optics
Integrated Optics
Lasers and Laser Optics
Lasers, Optical Amplifiers, and Laser Optics
Letters
Light-matter Interaction
Machine Vision
Materials
Measurement
Medical and biological imaging
Medical optics and biotechnology
Metamaterials, plasmon polaritons, and waveguides in terahertz region
Microscopy
Microwave Photonics
Multiphoton processes
Nanophotonics
Nanophotonics, Metamaterials, and Plasmonics
Nolinear optics
Nonlinear Optics
optical computing
OPTICAL DATA STORAGE
Optical Design and Fabrication
optical design and fabrications
Optical devices
Optical divces
Optical Materials
Optical Sensing, Measurements, and Metrology
Optical trapping
Optics at Surfaces
Optics in Computing
Optics in Computing and Optical Data Storage
Optics in Interdisciplinary Research
Optoelectronics
Other Areas of Optics
Physical Optics
Plasmonics and Metamaterials
Quantum optics
Quantum Optics and Quantum Information
remote sensing
Remote Sensing and Sensors
Research Articles
Reviews
Scattering
Solar Energy and Photovoltaics
Sources and mechanisms of terahertz radiation
Special Issue on 20th Anniversary of Wuhan National Laboratory for Optoelectronics (WNLO)
Special Issue on 70th anniversary of National University of Defense Technology
Special Issue on Lithium Niobate Based Photonic Devices
Special Issue on Lithium Noibate Based Photonic Devices
Special Issue on Metal Halide Perovskite and Their Applications
Special Issue on OISE Major Jointly Established by Tianjin University and Nankai University
Special Issue on Optical Metasurfaces: Fundamentals and Applications
Special Issue on Spatiotemporal Optical Fields and Time-Varying Optical Materials
Special Issue on the 20th Anniversary of Wuhan National Laboratory for Optoelectronics (WNLO)
Spectroscopy
Spectroscopy, imaging, and sensing using terahertz radiation
Thin films
Thin Films and Optics at Surfaces
Ultrafast Optics
Ultrafast Optics and Attosecond/High-field Physics
Ultrafast Optics: fundamentals and applications
Underwater Wireless Optical Communication
vision and color
Vision, color, and visual
Vision, Color, and Visual Optics
Visual Optics and Displays
X-ray Optics