Semiconductor metal oxides with narrow bandgap have emerged as a promising platform for photoelectrochemical reactions, yet their photoelectron-induced photocorrosion effect has been a limitation for their wider applications. Unde

The performance of an all-fiber-integrated photodetector (AFPD) depends on the integration of the active layer, where FA0.4MA0.6PbI3 emerges as a promising candidate due to its high absorbance, long carrier diffusion distance, and

Holographic near-eye augmented reality (AR) displays featuring tilted inbound/outbound angles on compact optical combiners hold significant potential yet often struggle to deliver satisfying image quality. This is primarily attrib

Framing photography provides a high temporal resolution and minimizes crosstalk between adjacent frames, making it an indispensable tool for recording ultrafast phenomena. To date, various ultrafast framing photography techniques

By exploiting the nonlinear responses of fluorescent probes, the spatial resolution of structured illumination microscopy (SIM) can be further increased. However, the traditional reconstruction method of nonlinear structured illum

An exhaustive study of the noncontinuous-state laser dynamics associated with the transient optical process is significant because it reveals the complex physical mechanisms and characteristics in nonlinear laser systems. In this

Broadband polarization measurement plays a crucial role in numerous fields, spanning from fundamental physics to a wide range of practical applications. However, traditional approaches typically rely on combinations of various dis

This paper presents a wavelength-stepped swept laser based on a dispersion-tuned swept laser with the integration of a Mach–Zehnder interferometer, enabling a transition from continuous wavelength sweeping to wavelength-stepped sw

In a hollow-core fiber (HCF), light propagates through an air/vacuum core rather than a solid material, resulting in a low thermo-optic coefficient and ability to handle high powers. Here, we demonstrate a laser locked to a hollow

Blood flow is essential for maintaining normal physiological functions of the human body. Endoscopic laser speckle contrast imaging (LSCI) can achieve rapid, high-resolution, label-free, and long-term blood flow perfusion velocity

Bound states in the continuum (BICs) have gained considerable attention for their ability to strengthen light–matter interactions, enabling applications in lasing, sensing, and imaging. These properties also show great promise for

Point-of-care sensors are pivotal for early disease diagnosis, significantly advancing global health. Surface plasmons, the collective oscillations of free electrons under electromagnetic excitation, have been widely studied for b

High-index dielectric nanoparticles supporting strong Mie resonances, such as silicon (Si) nanoparticles, provide a platform for manipulating optical fields at the subwavelength scale. However, in general, the quality factors of M

Structural colors have always attracted much attention due to important applications in display devices, imaging security certification, optical data storage, and so on. The brightness of structure colors, as the carrier of chiaro

Phase change material is promising for a color-changing device owing to its substantial optical contrast between amorphous and crystalline states. However, current phase change material, such as Ge2Sb2Te5 thin film, has restrained

Chaotic dynamics generated by vertical-cavity surface-emitting lasers (VCSELs) has stimulated a variety of applications in secure communication, random key distribution, and chaotic radar for its desirable characteristics. The app

With the rapid spread of Internet technology, e-commerce is gradually becoming an integral part of the modern business models. The e-commerce transactions should obey integrity, authentication, nonrepudiation, traceability, and im

We present hybrid tunable lasers at 2.0-μm wavelength, seamlessly integrated within silicon photonic circuits for advanced biomedical applications. Leveraging III/V semiconductor materials for gain and silicon ring resonators for

We demonstrate a dual-wavelength optical frequency standard based on the dual-optical-transition modulation transfer spectroscopy (DOT-MTS) between different quantum transitions of the rubidium D1 (795 nm) and D2 (780 nm) lines. I

The ultralow limit of detection (LoD) and exceptional sensitivity of biosensors are a significant challenge currently faced in the field. To address this challenge, this work proposes a highly sensitive laser ring cavity biosensor

Transition metal dichalcogenides (TMDs) hold great promise as a platform for optoelectronic devices, thanks to their exceptional optical characteristics. Nonetheless, their intrinsic low radiative recombination rate results in dim

Combining high peak power and high average power has long been a key challenge of ultrafast laser technology, crucial for applications such as laser-plasma acceleration and strong-field physics. A promising solution lies in post-c