In a world-first, researchers from the Femtosecond Spectroscopy Unit at the Okinawa Institute of Science and Technology (OIST ...

A Caltech team has developed a highly efficient method to provide coherent light of any wavelength from visible to mid-infrared with a single tiny device ...

An ultraviolet photon-counting dual-comb spectrometer. Two ultraviolet frequency combs of slightly different pulse repetition frequencies are generated at very low light levels by nonlinear frequency ...

Understanding what happens inside a material when it is hit by ultrashort light pulses is one of the great challenges of ...

Complex Biosystems Spectroscopic detection of fluorescent molecules, either those found naturally or those colored with fluorescent dyes, has created new research possibilities for scientists who ...

At the core of the breakthrough is an optical parametric oscillator (OPO), a resonator that converts incoming laser light into new frequencies using a nonlinear crystal. For decades, OPOs have been ...

"Spectroscopy and theory shed light on excitons in semiconductors." ScienceDaily. www.sciencedaily.com / releases / 2024 / 03 / 240319122940.htm (accessed September 26, 2025).

Two-photon absorption and quantum light spectroscopy have emerged as transformative tools in modern optical research. At the heart of these techniques is the simultaneous absorption of two photons to ...

Some typical structural and functional changes occur in the eyes, especially the eye fundus, due to ocular diseases like diabetic retinopathy (DR), age-related macular degeneration (AMD), and glaucoma ...

The process that can convert pollution into benign by-products is called selective catalytic reduction, or SCR. Until now, it has been unclear how this reaction actually occurs, and contradictions ...

Researchers develop a highly efficient method to provide coherent light of any wavelength from visible to mid-infrared with a ...