999 Result(s)
within
He** Lin
Physics
English
Optics, Lasers, Photonics, Optical Devices
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Article
2D photonic-crystal-type surface relief grating for light with an azimuth angle
With the development of virtual reality, the projection design of the head-mounted display (HMD) requires improvement as well. The surface relief grating (SRG) is one of the popular diffraction elements to ach...
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Article
Open AccessSuper-resolution diffractive neural network for all-optical direction of arrival estimation beyond diffraction limits
Wireless sensing of the wave propagation direction from radio sources lays the foundation for communication, radar, navigation, etc. However, the existing signal processing paradigm for the direction of arriva...
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Article
Application of visible light polarization imaging in normal temperature measurement
An approach to measure the temperature of objects in a common range (30 ~ 150 °C) using visible light polarization imaging and Convolutional Neural Networks (CNN) is proposed. Objects at different temperatures...
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Article
Open AccessTime-of-flight resolved stimulated Raman scattering microscopy using counter-propagating ultraslow Bessel light bullets generation
We present a novel time-of-flight resolved Bessel light bullet-enabled stimulated Raman scattering (B2-SRS) microscopy for deeper tissue 3D chemical imaging with high resolution without a need for mechanical z-sc...
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Article
Open AccessEmerging probing perspective of two-dimensional materials physics: terahertz emission spectroscopy
Terahertz (THz) emission spectroscopy (TES) has emerged as a highly effective and versatile technique for investigating the photoelectric properties of diverse materials and nonlinear physical processes in the...
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Investigating frequency locking in Yb:YAG linearly polarized lasers with different pum** coupling ratios
This paper explores the production of linearly polarized laser output in a diode-pumped Yb:YAG laser at various pum** coupling ratios. To investigate the polarization mode locking mechanism with various pump...
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Article
Open AccessThe research on the effect of dynamic tilt variation on the phase of cold atomic gravimeter
In recent years, absolute gravity comparison experiments between cold atomic gravimeter and traditional gravimeter have been carried out by combining cold atomic gravimeter with stable platform. Due to the wor...
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Broadband, polarization-insensitive and temperature-independent metamaterial absorber based on graphene hybrid water in terahertz domain
Water and graphene have been used separately to effectively broaden absorption bandwidth in the design of metamaterial absorbers (MAs). In this paper, a broad terahertz MA is presented, in which water and grap...
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Article
Terahertz beam reconfigurable phase gradient metasurface of VO2 based on different metal–insulator transition temperatures
In this letter, by using vanadium dioxide (VO2) with metal–insulator transition (MIT) temperatures of 60 ℃ and 72 ℃, respectively, and analyzing the effects of the two states of VO2 before (insulator state) and a...
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Article
The optical solitons for the three-component Dirac–Manakov system via the Darboux transformation
The optical solitons represent a fascinating intersection of nonlinear physics and optical technology. In this study, we examine the three-component Dirac–Manakov system through the application of a unified Da...
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Article
Multimodal demodulation algorithm for fiber optic MEMS fabry perot sensors
This paper addresses the issue of low demodulation accuracy in interferometric signals caused by significant errors in direct peak finding and positioning during multi-peak demodulation of fiber-optic MEMS Fab...
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Article
All-optical logic gates with multi-functionalities based on photonic crystals
In this paper, we have designed and simulated all-optical logic gates with multi-functionalities based on two-dimensional photonic crystals. All-optical logic gates such as AND, OR, XOR, NOR and NAND are desig...
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Article
Open AccessVisible Light-Illuminated Gold Nanohole Arrays With Tunable On-Chip Plasmonic Sensing Properties
Since the discovery of the extraordinary optical transmission phenomenon, nanohole arrays have attracted much attention and been widely applied in sensing. However, their typical fabrication process, utilizing...
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Article
Ultra-wideband radar cross-section reduction achieved by means of diffusion and absorption
In this work, an ultra-wideband absorptive coding metasurface (ACM) is proposed for radar cross-section (RCS) reduction. The ACM is composed of two types of lossy coding elements arranged in an appropriate man...
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Article
The frequency degeneracy range of transverse mode in an off-axis end-pumped solid-state lasers
In this work, the degenerate phenomena of transverse mode’s frequency in an off-axis end-pumped solid-state lasers was researched based on a semi-confocal cavity. When the off-axis distance was 0.05 mm, the be...
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Article
An electrically controlled tunable photonic crystal filter based on thin-film lithium niobate
In this paper, we present an electrically controlled tunable narrowband filter based on a thin-film lithium niobate two-dimensional (2D) photonic crystal. The filter incorporates a photonic crystal microcavity...
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Article
Broadband fiber laser with selective and stable narrow linewidth wavelength over 68 nm selectable bandwidth
In this paper, a stabilized and wavelength-selective erbium-doped fiber (EDF) laser architecture with single-longitudinal-mode, high optical signal to noise ratio (OSNR), stability, wide tunability and narrowe...
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Article
Beyond the surface: mathematical insights into water waves and quantum fields
This paper examines the complex characteristics of the modified Benjamin–Bona–Mahony equation ( \(\text {m}{\mathcal {BBM}}\) ...
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Open AccessReview of Fiber-Optic Localized Surface Plasmon Resonance Sensors: Geometries, Fabrication Technologies, and Bio-Applications
Localized surface plasmon resonance (LSPR) biosensors, which enable nanoscale confinement and manipulation of light, offer the enhanced sensitivity and electromagnetic energy localization. The integration of L...
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Open AccessHigh-power, electrically-driven continuous-wave 1.55-μm Si-based multi-quantum well lasers with a wide operating temperature range grown on wafer-scale InP-on-Si (100) heterogeneous substrate
A reliable, efficient and electrically-pumped Si-based laser is considered as the main challenge to achieve the integration of all key building blocks with silicon photonics. Despite the impressive advances th...
