Photon upconversion (UC) is a process in which the sequential absorption of two photons of lower energy leads to the emission of one photon of higher energy.

Researchers in the Oregon State University College of Engineering have developed new technology for uranium enrichment ...

The few-photon TPA method is compatible with standard digital optical projection systems, offering a cost-effective, stable, and highly scalable pathway to next-generation nanomanufacturing.

The proposed photodetectors consist of a micrometer-thick cylindrical Si slab placed over an insulating substrate, with metallic “fingers” extending from the contact metals atop the slab in an ...

Two-Photon Absorption and Stimulated Emission in Poly-Crystalline Zinc Selenide with Femtosecond Laser Excitation In a new publication from Opto-Electronic Advances; DOI 10.29026/oea.2022.210036 ...

For photosynthesis, one photon is all it takes. Only a single particle of light is required to spark the first steps of the biological process that converts light into chemical energy, scientists ...

Deep learning transforms standard CT scans towards spectral images “There are many thrilling methods which can be enabled through the photon-counting detector system and carried over to [metal ...

Historical Archive New model for measurement of photon absorption in atmosphere 17 Jun 2002 A Johns Hopkins University scientist has created a new mathematical technique that will double the accuracy ...

Before this experiment, some researchers wondered if the photon-metal interaction necessary to create a surface plasmon would prevent the plasmons from exhibiting quantum interference.

Most of these subdwarfs and dwarfs are found to exhibit a He I absorption line indicative of the presence of chromospheres. The equivalent width of the λλ10830 absorption profile is generally less ...