High-resolution label-free dual-mode full-field optical coherence tomography (FFOCT) is developed for simultaneous structural and functional imaging of mouse retinas, achieving both static contrasts gained from structural refracti

We propose a method for realizing single-shot high-resolved quantitative birefringence microscopy by extending microsphere-assisted microscopy into polarization holographic microscopy. Based on our proposed imaging system and reco

In this paper, a high-security three-dimensional carrierless amplitude and phase (3D-CAP) modulation technique is proposed, integrating deep learning with four-level masking. The 3D constellation geometry is optimized using an aut

In this paper, a carrier-less amplitude and phase modulation passive optical network (CAP-PON) scheme is proposed based on dynamic probabilistic shaping (DPS) and Rubik’s cube encryption in optical access networks. The key is gene

In this paper, we demonstrate and experimentally verify a tunable, multi-wavelength switchable ring-cavity erbium-doped fiber laser (EDFL). The hollow-core anti-resonant fiber (HC-ARF) filters, which are based on polarization inte

Range-gated imaging has the advantages of long imaging distance, high signal-to-noise ratio, and good environmental adaptability. However, conventional range-gated imaging utilizes a single laser pulse illumination modality, which

Existing two-step Fourier single-pixel imaging (FSPI) suffers from low noise-robustness, and three-step FSPI and four-step FSPI improve the noise-robustness but at the cost of more measurements. In this Letter, we propose a method

Imaging through scattering media remains a formidable challenge in optical imaging. Exploiting the memory effect presents new opportunities for non-invasive imaging through the scattering medium by leveraging speckle correlations.

Aiming at low-loss terahertz (THz) fiber fabrication, we propose a negative curvature terahertz tube fiber (NC-TF). Simulation results show that the NC-TF has similar transmission losses (TLs) to the recognized half-ring fiber but

Optical coherence tomography (OCT) offers a direct and precise measurement of keyhole depth in laser welding, facilitating its application for quality assurance and control. Nevertheless, in high-speed welding, the keyhole lags be

In this work, a 4H-SiC-based soft X-ray single photon detector with photon energy resolution capability is demonstrated. The 4H-SiC p-i-n detector with an 80-μm-thick epi-layer and low intrinsic doping exhibits a low leakage curre

Integrated photonic spectrographs could provide a new generation of low-cost, highly integrated, high-performance optical terminal instruments for astronomical observations. However, these spectrographs still face the challenge of

We propose a dual feed-forward neural network (DFNN) model, consisting of a cavity parameter feature expander (CPFE) and a dynamic process predictor (DPP), for predicting the complex nonlinear dynamics of mode-locked fiber lasers.

In this Letter, we report a 2-kW all polarization-maintaining (PM) fiber ultrafast laser from a single fiber link, which has a center wavelength of 1064 nm and a repetition rate of 1.39 GHz. To the best of our knowledge, this is t

In this paper, to reduce the damage or absorption caused by radiation to optical fibers, we study lightweight and flexible anti-radiation films based on optical precision deposition technology. At first, anti-radiation composite t

In this Letter, a homemade bismuth-doped germane silica fiber (BGSF) with a high gain coefficient is fabricated. Based on this fiber, a single-frequency fiber laser (SFFL) operating at 1440 nm is successfully realized. A ring cavi

In this work, we report on the recent research progress on watt-level all-solid-state single-frequency Pr:LiYF4 (YLF) lasers in the orange spectral region. Combining dual-end pumping and ring-cavity technologies, we have achieved

We propose and experimentally demonstrate the monolithic dual-waveguide (DW) distributed feedback (DFB) laser with tunable wavelength spacing. The differences in the chirp sampled grating with various index modulation amplitudes a

Atomic spectroscopy serves as the basis for quantum precision measurements, where frequency-stabilized lasers are crucial for obtaining accurate atomic spectra. This work introduces a compact laser frequency stabilization system t

High-aspect-ratio structures with heights or depths significantly exceeding their lateral dimensions hold broad application potential across various fields. The production of these structures is challenging, requiring meticulous c

Ge2Sb2Se4Te1, a newly developed phase change material derived from Ge2Sb2Te5, has garnered significant interest among researchers due to its numerous advantages. Here, its phase change characteristics under the electron beam evapo

The photonic Ising machine, a promising non-von Neumann computational paradigm, offers a feasible way to address combinatorial optimization problems. We develop a digital noise injection method for spatial photonic Ising machines

Optical gyroscopes in microcavity platforms have attracted much attention for their vast applications. For Sagnac effect enhancement, the exceptional surface (ES) concept holds the potential to stabilize exceptional points (EPs),

The quantum eraser effect exemplifies the distinctive properties of quantum mechanics that challenge classical intuition and reveal the wave-particle duality of light. Whether the photon exhibits particle-like or wave-like behavio

Since the working conditions of classical and quantum signals are very different, how to effectively integrate classical and quantum communication networks without affecting their respective performance has become a great challeng

Freestanding Zr filters are important devices for improving spectral purity in the extreme ultraviolet range of 7–20 nm, and their irradiation resistance directly determines their life and efficiency. We prepared multilayered Zr/B