Diffraction grating
View article: Experimental demonstration of optical energy transfer between the 0th and -1st orders diffracted by an all-dielectric resonant waveguide grating
Experimental demonstration of optical energy transfer between the 0th and -1st orders diffracted by an all-dielectric resonant waveguide grating Open
The energy transfer between the reflected 0th and -1st orders diffracted by a grating in the vicinity of the Littrow angle is experimentally demonstrated for the first time with an all-dielectric resonant waveguide grating under TE polariz…
View article: VISUALIZANDO A DIFRATOMETRIA
VISUALIZANDO A DIFRATOMETRIA Open
VISUALIZING THE DIFFRACTOMETRY. This classroom-oriented study goes beyond simple visualization by directly comparing laser diffractometry and light microscopy measurements to quantify micron-scale spacings in commercial CDs/DVDs (compact d…
View article: Data-Driven Inverse Design of Hybrid Waveguide Gratings Using Reflection Spectra via Tandem Networks and Conditional VAEs
Data-Driven Inverse Design of Hybrid Waveguide Gratings Using Reflection Spectra via Tandem Networks and Conditional VAEs Open
This study presents a data-driven inverse design approach for one-dimensional hybrid waveguide gratings using full reflection spectra across the visible range and a complete span of incident angles. Traditionally, designing such structures…
View article: The Influence and Compensation of Process on Measurement Accuracy in Digital Grating Focusing and Leveling Sensors
The Influence and Compensation of Process on Measurement Accuracy in Digital Grating Focusing and Leveling Sensors Open
The digital grating focusing and leveling sensor is a kind of wafer height sensor for focus control in a lithography tool by measuring the displacement of an optical grating image reflected from the wafer surface. The process pattern on th…
View article: Design and fabrication of liquid crystal optical phased arrays with wide deflection angle
Design and fabrication of liquid crystal optical phased arrays with wide deflection angle Open
Liquid crystal optical phased array (LCOPA) is a beam deflection technology based on devices such as liquid crystal spatial light modulators and liquid crystal polarization gratings to achieve precise angular control. Compared with mechani…
View article: AI-Designed Gratings for Ion Trap Integration
AI-Designed Gratings for Ion Trap Integration Open
Artificial Intelligence (AI) software based on transformer model is developed to automatically design gratings for possible integrations in ion traps to perform optical addressing on ions. From the user-defined (x,z) coordinates and full-w…
View article: Spatially Resolved Plasma Diagnostics of the Supernova Remnant DEM L71 using the Reflection Grating Spectrometer
Spatially Resolved Plasma Diagnostics of the Supernova Remnant DEM L71 using the Reflection Grating Spectrometer Open
We present a spatially resolved high-resolution X-ray spectroscopy of the supernova remnant DEM L71 using the Reflection Grating Spectrometer (RGS) aboard XMM-Newton. Because of the large dispersion angle of the RGS, we are able to resolve…
View article: Nonlinearity and Dispersion Controlled All-Fiber High-Energy Femtosecond Chirped Pulse Amplification System with Peak Power More than 0.5 GW
Nonlinearity and Dispersion Controlled All-Fiber High-Energy Femtosecond Chirped Pulse Amplification System with Peak Power More than 0.5 GW Open
A monolithic all-fiber high-energy chirped pulse amplification (CPA) system with a managed large dispersion is demonstrated. To lower the system’s nonlinearity, two temperature-tuning cascaded chirped fiber Bragg gratings (CFBGs) with a la…
View article: Pulsed Raman Lasing in Diode-Pumped Multimode Graded-Index Fiber with Tuned Femtosecond-Laser-Inscribed Bragg Grating
Pulsed Raman Lasing in Diode-Pumped Multimode Graded-Index Fiber with Tuned Femtosecond-Laser-Inscribed Bragg Grating Open
Raman lasers based on multimode graded-index (GRIN) fibers directly pumped by laser diodes are the object of intensive research, promising to produce high-power, high-quality beams at new wavelengths. In this paper, we demonstrate a pulsed…
View article: Single-cycle contact-interference hybrid lithography for scalable fabrication of arrayed quadrant micro-polarizer structures
Single-cycle contact-interference hybrid lithography for scalable fabrication of arrayed quadrant micro-polarizer structures Open
Advantages of polarization imaging in remote sensing applications can be readily obtained by applying 5
subwavelength metal grating arrays in standard optical imaging systems. However, efficient fabrication of these 6
arrays remain…
View article: Simulation and Preparation of Two-Dimensional Polymer-Dispersed Liquid Crystal Gratings via Holographic Multi-Beam Interference
Simulation and Preparation of Two-Dimensional Polymer-Dispersed Liquid Crystal Gratings via Holographic Multi-Beam Interference Open
Polymer-dispersed liquid crystal (PDLC) gratings, as an emerging optical material, offer significant advantages such as low fabrication cost, suitability for large-area processing, and rapid electro-optic response. They show great potentia…
View article: 2D-RIXS: Resonant inelastic x-ray scattering microscopy with high energy and spatial resolutions
2D-RIXS: Resonant inelastic x-ray scattering microscopy with high energy and spatial resolutions Open
A two-dimensional resonant inelastic x-ray scattering (2D-RIXS) microscopy system has been developed at the beamline BL02U of NanoTerasu. The instrument combines a Wolter type-I mirror for spatial imaging with a varied-line-spacing grating…
View article: 2D-RIXS: Resonant inelastic x-ray scattering microscopy with high energy and spatial resolutions
2D-RIXS: Resonant inelastic x-ray scattering microscopy with high energy and spatial resolutions Open
A two-dimensional resonant inelastic x-ray scattering (2D-RIXS) microscopy system has been developed at the beamline BL02U of NanoTerasu. The instrument combines a Wolter type-I mirror for spatial imaging with a varied-line-spacing grating…
View article: Manipulation of the orbital angular momentum of soft x-ray beams by consecutive diffractive optics
Manipulation of the orbital angular momentum of soft x-ray beams by consecutive diffractive optics Open
Production and manipulation of orbital angular momentum (OAM) of coherent soft x-ray beams is demonstrated utilizing consecutive diffractive optics. OAM addition is observed upon passing the beam through consecutive fork gratings. The OAM …
View article: Energy stability of supercontinuum via femtosecond filamentation in sapphire
Energy stability of supercontinuum via femtosecond filamentation in sapphire Open
View article: Manipulation of the orbital angular momentum of soft x-ray beams by consecutive diffractive optics
Manipulation of the orbital angular momentum of soft x-ray beams by consecutive diffractive optics Open
Production and manipulation of orbital angular momentum (OAM) of coherent soft x-ray beams is demonstrated utilizing consecutive diffractive optics. OAM addition is observed upon passing the beam through consecutive fork gratings. The OAM …
View article: Wavelengths and Energy Levels of Neutral Manganese (Mn I) Determined Using High-Resolution Fourier Transform and Grating Spectroscopy
Wavelengths and Energy Levels of Neutral Manganese (Mn I) Determined Using High-Resolution Fourier Transform and Grating Spectroscopy Open
An extensive analysis of the spectrum of neutral manganese has been performed using spectra of manganese-neon and manganese-argon hollow cathode discharges measured using high resolution Fourier transform (FT) and grating spectroscopy over…
View article: Note on “Pioneering study on Poly(trimethylene terephthalate) grating assembly: Architecture and formation mechanism probed using X-ray microbeam” by E.M. Woo and co-authors (Polymer 2025, Vol. 330, 128512)
Note on “Pioneering study on Poly(trimethylene terephthalate) grating assembly: Architecture and formation mechanism probed using X-ray microbeam” by E.M. Woo and co-authors (Polymer 2025, Vol. 330, 128512) Open
View article: Wavelengths and Energy Levels of Neutral Manganese (Mn I) Determined Using High-Resolution Fourier Transform and Grating Spectroscopy
Wavelengths and Energy Levels of Neutral Manganese (Mn I) Determined Using High-Resolution Fourier Transform and Grating Spectroscopy Open
An extensive analysis of the spectrum of neutral manganese has been performed using spectra of manganese-neon and manganese-argon hollow cathode discharges measured using high resolution Fourier transform (FT) and grating spectroscopy over…
View article: Unraveling mode-mode interaction drives spectral performance in multi-mode photonic molecules
Unraveling mode-mode interaction drives spectral performance in multi-mode photonic molecules Open
View article: An Overview on UV Spectroscopy with Applications
An Overview on UV Spectroscopy with Applications Open
Ultraviolet (UV) spectroscopy is a vital analytical technique used across chemistry, pharmaceuticals, and biological sciences for qualitative and quantitative analysis. It is based on the absorption of ultraviolet light (200–400 nm) by mol…
View article: An Overview on UV Spectroscopy with Applications
An Overview on UV Spectroscopy with Applications Open
Ultraviolet (UV) spectroscopy is a vital analytical technique used across chemistry, pharmaceuticals, and biological sciences for qualitative and quantitative analysis. It is based on the absorption of ultraviolet light (200–400 nm) by mol…
View article: Symmetry-Guided Scattering Engineering in Modular Gain–Loss Photonic Crystals
Symmetry-Guided Scattering Engineering in Modular Gain–Loss Photonic Crystals Open
View article: High-Resolution Confocal Raman Microscopy Spectrometer Design Based on Echelle Gratings
High-Resolution Confocal Raman Microscopy Spectrometer Design Based on Echelle Gratings Open
To address the inherent challenge of balancing broad spectral coverage with high resolution in conventional Raman spectrometers, this paper presents a cross-dispersed confocal Raman spectrometer based on an echelle grating. First, a compou…
View article: Integrated High Rejection Ratio Pump Filter Using an Optimized Waveguide Bragg Grating
Integrated High Rejection Ratio Pump Filter Using an Optimized Waveguide Bragg Grating Open
View article: Research on energy compensation characteristics of beam deflection structure based on liquid crystal polarization grating
Research on energy compensation characteristics of beam deflection structure based on liquid crystal polarization grating Open
Growing demand for beam deflection technologies featuring wide angular range and high diffraction efficiency necessitates a quantitative analysis of the energy compensation mechanisms of the 2D beam deflection structure that account for az…
View article: Direct Fabrication of Inclined-Sidewall Microgrooves with Shaped Flat-Top Beams
Direct Fabrication of Inclined-Sidewall Microgrooves with Shaped Flat-Top Beams Open
Microgrooves have demonstrated significant application value across various fields. As a key processing technology, femtosecond laser processing exhibits notable advantages due to its high precision and minimal thermal impact. This study p…
View article: Polarization‐Encoded Transmission Enabled by PtSe <sub>2</sub> /Si PIN Photodetectors with Circular Groove Light‐Trapping Architecture
Polarization‐Encoded Transmission Enabled by PtSe <sub>2</sub> /Si PIN Photodetectors with Circular Groove Light‐Trapping Architecture Open
2D PtSe 2 shows promise for extending Si photodetection to the short‐wave infrared (SWIR) but faces integration challenges. A high‐performance PtSe 2 /I‐Si/N + ‐Si PIN photodetector on Si circular groove light‐trapping structures is demons…
View article: Compact Hybrid-integrated Multi-port Multi-wavelength Laser Source Based on High-power DFB Laser Array for Optical I/O Technology
Compact Hybrid-integrated Multi-port Multi-wavelength Laser Source Based on High-power DFB Laser Array for Optical I/O Technology Open
View article: Self‑imaging grating couplers for silicon photonics
Self‑imaging grating couplers for silicon photonics Open
Fiber–to–chip coupling often limits the practical performance of photonic integrated devices. In selecting a coupling strategy, designers balance coupling efficiency, optical bandwidth, fiber‑array compatibility, polarization‑dependent los…