Correcting wavefront distortion caused by atmospheric turbulence is crucial for atmospheric optics. To evaluate correction systems, a real and fast atmospheric turbulence time-evolving model is needed. We proposed a model for a ti

In this paper, a novel compensation technique is presented for mitigating dispersion in fiber optic microwave frequency transfer systems. By introducing an additional carrier light into the transmission link, the system effectivel

Amplified spontaneous emission (ASE) is the most natural optical carrier for covertly conveying messages in the photonic layer and simultaneously serves as a typical optical carrier in optical sensors. Here, an innovative scheme f

Integrating mobile nodes into wireless light communication networks requires overcoming the challenges of light alignment. Here, we use white and blue lights to establish an all-light communication network with mobile light commun

In this Letter, we provide a novel maximum a posteriori probability detection-based decision-directed carrier phase estimation (MAP-DDCPE) algorithm. The introduced probability-aware maximum a posteriori probability (MAP) detectio

Phase unwrapping is a crucial process in the field of optical measurement, and the effectiveness of unwrapping directly affects the accuracy of final results. This study proposes a multi-level grid method that can efficiently achi

Brain imaging techniques provide in vivo insight into structural and functional phenotypes that are physiologically and clinically relevant. However, most existing brain imaging techniques suffer from balancing trade-offs among th

Considering practical unknown magnetic detection, fast magnetic field search and locking scheme is needed in atomic magnetometers. Here, based on the in-phase response of atomic polarization rotation, we provide an iterative searc

Long-distance surface profiling requires a high level of vibration resistance. Here, we propose a heterodyne interferometry scheme that uses two acousto-optic modulators (AOMs) to achieve precise and high-speed heterodyne phase-sh

Accurately perceiving the multidimensional geometric information of complex equipment is crucial for improving product quality and production efficiency. We propose a multichannel time-domain wavelength division multiplexing frequ

It is meaningful to develop a high-performance optic bending sensor characterized by effective direction judgment, compact length, and high sensitivity. In this Letter, a compact Mach–Zehnder interferometer (MZI) fiber sensor for

Fabrication imperfections must be considered during the configuration of programmable photonic integrated circuits (PPICs). Therefore, characterization of imperfections is crucial but challenging, especially for PPICs based on rec

A high-energy and high-efficiency 2 µm nanosecond optical parametric oscillator (OPO) with excellent energy stability is reported. The cavity adopts a plane–plane configuration with two potassium titanyl phosphate (KTP) crystals i

Bound states in the continuum (BICs) have gained significant attention in recent years for enhancing light–matter interaction. Here, we numerically and experimentally demonstrate quasi-BICs in a terahertz photonic crystal (PhC) sl

In this paper, a new strategy is proposed based on arbitrary selection of perturbation in a dielectric metasurface to achieve multiple quasi-bound states in the continuum (BICs) with identical modes under dual polarizations. Three

Dual-polarized reconfigurable intelligent surfaces (RISs) increasingly play significant roles in reshaping wireless transmission environments. In this Letter, we propose a design method for dual-polarized RIS elements. This propos

We design a terahertz (THz) biosensor supported by quasi-bound states in the continuum (QBICs) for lung cancer cell sensing. By destroying the in-plane symmetry of the bound state in the continuum (BIC), a QBIC with a high Q-facto

Lenses with desired depth of focus have crucial applications in imaging systems. However, there is little theoretical guidance to extend the depth of focus beyond numerical optimization. The on-demand construction of the Jones mat

Comparing the coupling strength with both the mean and the product of the square roots of the respective damping rates for the bright and dark modes is a crucial metric in the study of plasmon-induced transparency (PIT). The flip

Recently, in the field of nonlinear optics of the terahertz frequency range, numerous unique features have been discovered that distinguish it advantageously from nonlinear optics of the optical frequency range. This study demonst

Terahertz (THz) radiation generation by two-color femtosecond laser filamentation is a promising path for high-intensity THz source development. The intrinsic characteristics of the filament, especially its length, play a crucial

Y-junction photonic power splitters are essential in photonic integrated circuits. In this paper, a tunable Y-junction splitter is introduced using a standard silicon-on-insulator platform. It features a single-point control mecha

Modulating photoluminescent (PL) materials is crucial for applications such as super-resolution microscopy. The combination of PL materials and photoswitches can achieve this aim by utilizing isomerization of the photoswitches. He

The exceptional temporal and spatial photon confinement properties of whispering gallery mode (WGM) microcavities render them ideally suitable for nonlinear frequency conversion. Here, we present a reliable packaged microcavity de

A thulium-doped fiber amplifier-enhanced photoacoustic spectroscopy (TDFE-PAS) sensor was developed for carbon dioxide (CO2) detection utilizing a 2004 nm distributed feedback (DFB) laser. The thulium-doped fiber was in-band pumpe