BACKGROUND Optical spectrometry is one of the most powerful and widely used
characterization tools in scientific and industrial research. Benchtop laboratory spectrometer …

Geometry, an ancient yet vibrant branch of mathematics, has important and far-reaching
impacts on various disciplines such as art, science, and engineering. Here, we introduce an …

Light scattered or radiated from a material carries valuable information on the said material.
Such information can be uncovered by measuring the light field at different angles and …

While conventional photodetectors can only measure light intensity, the vectorial light field
contains much richer information, including polarization and spectrum, that are essential for …

Hyperspectral imaging is vital for material identification but traditional systems are bulky,
hindering the development of compact systems. While previous metasurfaces address …

Metasurfaces have an exceptional capacity to manipulate the phase, amplitude,
polarization, or spectrum of light. However, unit cells, or meta‐atoms, of metasurfaces are …

Dispersion decomposes compound light into its monochromatic components, which is
detrimental to broadband imaging but advantageous for spectroscopic applications …

Optical spectroscopic sensors are a powerful tool to reveal light-matter interactions in many
fields. Miniaturizing the currently bulky spectrometers has become imperative for the wide …

Spectral super-resolution (sSR) is a very important technique to obtain hyperspectral images
from only RGB images, which can effectively overcome the high acquisition cost and low …

Many applications requiring both spectral and spatial information at high resolution benefit
from spectral imaging. Although different technical methods have been developed and …