2026 August - 16 articles
Raman spectroscopy is a widely used analytical technique; however, the choice of container material can significantly affect repeatability due to noise and unwanted Raman bands. This paper describes the interaction of excitation radiation with the sa...
Semantic segmentation of large-scale 3D point clouds is a fundamental task in robotic perception, semantic mapping, and urban scene understanding. Existing methods mainly rely on geometric information, which limits their ability to distinguish semant...
Nonreciprocal optical devices are key components of integrated photonics and quantum information processing. However, achieving dynamically reconfigurable nonreciprocal transport without magnetic materials or structural asymmetry remains challenging....
Extreme noise severely degrades image quality in photon-limited imaging systems and challenges existing denoising methods. Classical total variation (TV) models rely on fixed local gradients and often introduce cross-edge smoothing, while deep learni...
We introduce a workflow to identify oligomeric structures that are recorded with single-molecule localization microscopy (SMLM) under cryogenic conditions. Typically, these oligomers are assumed to consist of protomers arranged as equilateral two-dim...
Within the framework of geometric optics, we obtain an analytical description of light propagation in media with a transverse variation in the refractive index. For a plane wave normally incident on a medium with a smooth monotonic step-like refracti...
The problem of direct inverse optimization of multi-output wavelength division multiplexers (WDMs) on silicon is that these WDMS often exhibit inter-channel crosstalk, making reliable designs difficult to achieve. A cascaded WDM design on a silicon p...
Recent developments in optoelectronics have led to the incorporation of metallic nanostructures into semiconductors and other active materials for tailoring optical confinement, carrier generation, energy transfer, and light emission. This review dis...
Micro-Raman line scans acquired across a cleaved silicon edge reveal a reproducible intensity maximum located away from the geometric boundary. Measurements obtained with objectives producing different effective spot sizes show that the peak position...
Addressing unstable stratified oceanic turbulence, this paper develops a composite stratified oceanic turbulent phase screen model using power spectrum inversion, which fully accounts for the coupled effects of turbulence diffusion, absorption, and s...
This study investigates the effects of post-annealing on the properties of thermally evaporated antimony selenide (Sb2Se3) thin films. The prepared samples were annealed at different temperatures of 150, 200, 250 and 300 °C for half an hour. Diff...
This paper proposes a high-sensitivity and sensitivity-tunable vibration sensing system based on a switchable loop length optoelectronic oscillator (OEO). Carrier-sideband separation is realized by using an acousto-optic modulator (AOM), and the reso...
In the present work, we propose a simple analytical algorithm for unobscured two-mirror telescope designs. It is based on fitting of the closest aberration-free surface for each field position and allows for computation of the wave aberration distrib...
This study investigates the feasibility of using an etched addressed fiber Bragg structure (EAFBS) as the sensing element in a microwave-photonic system for local pH monitoring. A theoretical model is developed that incorporates transmission-spectrum...
We investigate the localization transition in a one-dimensional extended Aubry–André–Harper (AAH) model, emphasizing its implementation as a quantum simulator in ultracold atomic optical lattices. In the single-particle case, quasi...
Video Compressive Imaging (VCI) enables low-dimensional detectors to capture high-dimensional data through incoherent encoding. However, traditional pseudo-random coding often exhibits structural sampling that leads to detail loss. While adjusting th...
