On-chip generation of Bessel-Gaussian beam for long-range sensing

The Bessel beam, with a significant depth of field and self-healing characteristics, has been applied in widespread applications, including quantum entanglement, underwater 3D imaging, optical micro-manipulation, microscope, ...

Searching for the universe's missing teenage pictures

Astrophysicists can use measurements of the cosmic microwave background, radiation formed 380,000 years after the Big Bang, to understand what the universe was like in its infancy. And by observing light emitted from galaxies ...

A new type of superresolution for exploring cell division

A new way to see details smaller than half the wavelength of light has revealed how nanoscale scaffolding inside cells bridges to the macroscale during cell division. Unlike earlier superresolution techniques, the one developed ...

'Evolving' and 3D printing new nanoscale optical devices

A new technology being pioneered at Caltech is allowing researchers to "evolve" optical devices and then print them out using a specialized type of 3D printer. These devices are made of so-called optical metamaterials that ...

The mutual benefit of agriculture and solar energy

Agricultural photovoltaics (AV) is a concept developed in the 1980s that combines agriculture and solar energy production on the same land. Practitioners grow crops under solar panels and can control the amount and wavelength ...

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