Chen-Ting Liao
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View article: Self-Assembled Magnetic Nanoparticle Layers: Structural Control for Reconfigurable Magnetism and Functional Applications
Self-Assembled Magnetic Nanoparticle Layers: Structural Control for Reconfigurable Magnetism and Functional Applications Open
We advance soft X-ray vector ptychographic tomography to map the 3D magnetization field in self-assembled superparamagnetic nanoparticles at a liquid–liquid interface, revealing how layered structures influence magnetic ordering. We observ…
View article: Transverse orbital angular momentum and polarization entangled spatiotemporal structured light
Transverse orbital angular momentum and polarization entangled spatiotemporal structured light Open
Intra-system entanglement occurs between non-separable modes within the same system. For optical systems, the various degrees of freedom of light represent different modes, and the potential use of light to create higher dimensional classi…
View article: Bias‐Managed Photodetection Within Drain Interconnected Semi‐Gate Diode
Bias‐Managed Photodetection Within Drain Interconnected Semi‐Gate Diode Open
Image processing has become a quintessential data‐intensive computational task, and leveraging sensors with real‐time image processing has been focused for the development of photodetectors. However, managing responsivity normally needs an…
View article: Transverse orbital angular momentum and polarization entangled spatiotemporal structured light
Transverse orbital angular momentum and polarization entangled spatiotemporal structured light Open
Intra-system entanglement occurs between non-separable modes within the same system. For optical systems, the various degrees of freedom of light represent different modes, and the potential use of light to create higher dimensional classi…
View article: Extreme-ultraviolet spatiotemporal vortices via high harmonic generation
Extreme-ultraviolet spatiotemporal vortices via high harmonic generation Open
Spatiotemporal optical vortices (STOV) are space-time structured light pulses with a unique topology that couples spatial and temporal domains and carry transverse orbital angular momentum (OAM). Up to now, their generation has been limite…
View article: High-topological charge extreme-ultraviolet spatiotemporal vortices via high harmonic generation
High-topological charge extreme-ultraviolet spatiotemporal vortices via high harmonic generation Open
Spatiotemporal optical vortices (STOV) are structured light pulses with a unique topology that couples the spatial and temporal domains. Up to now, their generation has been limited to low-order topological charges in the visible and infra…
View article: Visualizing Magnetic Order in Self-Assembly of Superparamagnetic Nanoparticles
Visualizing Magnetic Order in Self-Assembly of Superparamagnetic Nanoparticles Open
We use soft x-ray vector-ptychographic tomography to determine the three-dimensional magnetization field in superparamagnetic nanoparticles self-assembled at the liquid-liquid interface and reveal the magnetic order induced by layered stru…
View article: Roadmap on spatiotemporal light fields
Roadmap on spatiotemporal light fields Open
Spatiotemporal sculpturing of light pulse with ultimately sophisticated structures represents a major goal of the everlasting pursue of ultra-fast information transmission and processing as well as ultra-intense energy concentration and ex…
View article: Roadmap on spatiotemporal light fields
Roadmap on spatiotemporal light fields Open
Spatiotemporal sculpturing of light pulse with ultimately sophisticated structures represents the holy grail of the human everlasting pursue of ultrafast information transmission and processing as well as ultra-intense energy concentration…
View article: Single-Frame Characterization of Ultrafast Pulses with Spatiotemporal Orbital Angular Momentum
Single-Frame Characterization of Ultrafast Pulses with Spatiotemporal Orbital Angular Momentum Open
Light that carries spatiotemporal orbital angular momentum (ST-OAM) makes possible new types of optical vortices arising from transverse OAM. ST-OAM pulses exhibit novel properties during propagation, transmission, refraction, diffraction,…
View article: Single-frame characterization of ultrafast pulses with spatiotemporal orbital angular momentum
Single-frame characterization of ultrafast pulses with spatiotemporal orbital angular momentum Open
Light carrying spatiotemporal orbital angular momentum (ST-OAM) makes possible new types of optical vortices arising from transverse OAM. ST-OAM pulses exhibit novel properties during propagation, transmission, refraction, diffraction, and…
View article: Creation and observation of topological magnetic monopoles and their interactions in a ferromagnetic meta-lattice
Creation and observation of topological magnetic monopoles and their interactions in a ferromagnetic meta-lattice Open
Topological magnetic monopoles, also known as hedgehogs or Bloch points, are three-dimensional (3D) nonlocal spin textures that are robust to thermal and quantum fluctuations due to their topology 1-4 . Understanding their properties is of…
View article: Direct observation of 3D topological spin textures and their interactions using soft x-ray vector ptychography
Direct observation of 3D topological spin textures and their interactions using soft x-ray vector ptychography Open
Magnetic topological defects are energetically stable spin configurations characterized by symmetry breaking. Vortices and skyrmions are two well-known examples of 2D spin textures that have been actively studied for both fundamental inter…
View article: Nondestructive, high-resolution, chemically specific 3D nanostructure characterization using phase-sensitive EUV imaging reflectometry
Nondestructive, high-resolution, chemically specific 3D nanostructure characterization using phase-sensitive EUV imaging reflectometry Open
A new imaging technique enables nondestructive, 3D characterization of nanostructures, their composition, and interfaces.
View article: Measurement and control of optical nonlinearities in dispersive dielectric multilayers
Measurement and control of optical nonlinearities in dispersive dielectric multilayers Open
Dispersive dielectric multilayer mirrors, high-dispersion chirped mirrors in particular, are widely used in modern ultrafast optics to manipulate spectral chirps of ultrashort laser pulses. Dispersive mirrors are routinely designed for dis…
View article: Coherent Fourier scatterometry using orbital angular momentum beams for defect detection
Coherent Fourier scatterometry using orbital angular momentum beams for defect detection Open
Defect inspection on lithographic substrates, masks, reticles, and wafers is an important quality assurance process in semiconductor manufacturing. Coherent Fourier scatterometry (CFS) using laser beams with a Gaussian spatial profile is t…
View article: Second-harmonic generation and the conservation of spatiotemporal orbital angular momentum of light
Second-harmonic generation and the conservation of spatiotemporal orbital angular momentum of light Open
Light with spatiotemporal orbital angular momentum (ST-OAM) is a recently discovered type of structured electromagnetic field with characteristic space-time spiral phase structure and transverse OAM. In this work, we present the first gene…
View article: Attosecond light science and its application for probing quantum materials
Attosecond light science and its application for probing quantum materials Open
In this paper, we review the development and application of coherent short wavelength light sources implemented using the high harmonic generation (HHG) process. The physics underlying HHG brought quantum physics into the domain of attosec…
View article: Multimodal x-ray and electron microscopy of the Allende meteorite
Multimodal x-ray and electron microscopy of the Allende meteorite Open
Multimodal x-ray and electron microscopy are developed to provide structural, elemental and chemical insights into heterogeneous systems.
View article: SQUARREL: Scattering Quotient Analysis to Retrieve the Ratio of Elements in X-ray Ptychography
SQUARREL: Scattering Quotient Analysis to Retrieve the Ratio of Elements in X-ray Ptychography Open
Coherent X-ray and extreme ultraviolet (EUV) beams can visualize and characterize the structure and functions of material, from tens of microns down to nanometer scales [1,2].Recent exciting advances from facility-scale synchrotron-based X…
View article: Generation of extreme-ultraviolet beams with time-varying orbital angular momentum
Generation of extreme-ultraviolet beams with time-varying orbital angular momentum Open
Pulses with a twist and torque Structured light beams can serve as vortex beams carrying optical angular momentum and have been used to enhance optical communications and imaging. Rego et al. generated dynamic vortex pulses by interfering …
View article: Ptychographic amplitude and phase reconstruction of bichromatic vortex beams
Ptychographic amplitude and phase reconstruction of bichromatic vortex beams Open
We experimentally demonstrate that ptychographic coherent diffractive imaging can be used to simultaneously characterize the amplitude and phase of bichromatic orbital angular momenta-shaped vortex beams, which consist of a fundamental fie…
View article: Controlling attosecond transient absorption with tunable, non-commensurate light fields
Controlling attosecond transient absorption with tunable, non-commensurate light fields Open
We demonstrate a transient absorption scheme that uses a fixed-spectrum attosecond pulse train in conjunction with a tunable probe laser to access a wide range of nonlinear light-atom interactions. We exhibit control over the time-dependen…
View article: Probing autoionizing states of molecular oxygen with XUV transient absorption: Electronic-symmetry-dependent line shapes and laser-induced modifications
Probing autoionizing states of molecular oxygen with XUV transient absorption: Electronic-symmetry-dependent line shapes and laser-induced modifications Open
We used extreme ultraviolet (XUV) transient absorption spectroscopy to study the autoionizing Rydberg states of oxygen in an electronically- and vibrationally-resolved fashion. XUVpulse initiates molecular polarization and near-infrared pu…