87 papers
This paper outlines recent enhancements to the VOXES Von Hamos spectrometer, including the integration of an energy-dispersive detection line, a liquid-sample holder, and a Y-shaped support for transmission geometry, which collectively expand its capabilities for high-resolution, automated laboratory XES and XAS studies.
This paper establishes a per-pixel optogeometric throughput factor, , to explicitly map scene radiance to incident photon counts at the detector level, thereby defining the fundamental shot-noise-limited signal-to-noise ratio bounds for individual pixels based on optical geometry.
This paper proposes a data-driven "structured generalized sliced Wasserstein distance" method using randomized neural networks to directly analyze two-dimensional polarized images from Gas Pixel Detectors, successfully determining X-ray polarization and incident angles while demonstrating high consistency with traditional statistical models.
This paper experimentally demonstrates a novel on-axis laser ranging interferometer architecture for future gravity missions, achieving nanometer-accuracy inter-spacecraft measurements with high pointing stability and minimal polarization-induced noise through active beam steering and tilt-to-length coupling mitigation.
This paper presents a diamond-based metal-insulator-metal campanile probe that adiabatically compresses mid-infrared light into sub-wavelength volumes, enabling high-efficiency, high-resolution mapping of locally driven photocurrents in graphene and offering a robust platform for exploring low-energy carrier dynamics in atomically thin materials.
This paper presents a capacitively coupled GaAs p-i-n/substrate photodetector featuring a novel multi-step annealing process for Cr/Au ohmic contacts on lightly doped n-GaAs and a leakage-reducing biasing scheme, demonstrating the ability to detect high-energy X-ray pulses with approximately 10^6 electrons per pulse as a precursor to 3D SAM APD detectors.
This paper introduces an all-optical imaging modality that achieves 100-attosecond temporal and 200-nanometer spatial resolution to directly visualize the spatiotemporal evolution and vector electric field lines of light within a widefield transmission microscope, enabling the observation of ultrafast scattering dynamics and pulse broadening in MoTe2 that are inaccessible via standard simulations.