Upconversion of light from its fundamental wavelength (FW) to its second harmonic (SH) is enhanced 32× in micron-scale lithium niobate (LiNbO₃) spheres through near-field interactions with gold (Au) nanoparticles.

We theoretically and experimentally show a 900-fold boosting of optical THG emission in silicon metasurfaces using a novel type of nonlinear multi-mode Fano mechanism.

A soft infrared polymer fiber (a) has been used to develop bi-directional interfaces for simultaneous infrared neural stimulation and electrophysiology (b) over several weeks (c) with minimal tissue damage (d).

An unsupervised learning-based optical fiber imaging system is demonstrated to enable highly robust and nearly artifact-free transport of biological images through a meter-long disordered optical fiber.

The three-dimensional (3D) distribution of isotropic and anisotropic properties of multi-scattering objects can be effectively encoded into multiple intensity images at different input polarization states and illumination angles. Polarization-sensitive intensity diffraction tomography (PS-IDT) has demonstrated the tomographic reconstruction of 3D multiple scattering objects with fully or partially distributed anisotropy structures using vectorial multi-slice beam propagation forward model and optimization approach from captured phaseless measurements.

Quantitative phase imaging (QPI) has emerged as method especially for investigating biological specimen. However, conventional methods often suffer from shortcomings in image quality, such as the twin image artifact of inline holography. The presented compact 3D sensing system utilizes a novel computational framework for QPI from single intensity images. The reported system offers accurate and efficient 3D profiling, overcoming the limitations of conventional inline holography approaches. This paradigm shift is promising for biomedical imaging, and material analysis.

A general methodology was proposed to measure the light-to-heat conversion efficiency of solid materials by considering laser heating process with electric heating process.

Using carbonized polymer dots, the interfacial properties between perovskites and the hole transporter can be optimized. The anion-dominated interface breeds a dense and homogeneous emitting layer, enabling 20.2% external quantum efficiency for 225 mm² large-area light-emitting device.