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Modern precision optical instruments are increasingly limited not by light sources, electronics, or vibration isolation but by the microscopic thermal motion of mirror coatings that form the reflecting surfaces of optical cavities. In optical atomic clocks, ultrastable lasers, stabilized frequency combs, and gravitational-wave detectors, this inherent thermomechanical noise from multilayer mirror coatings sets a noise

FAMES Pilot Line is the leading initiative under the European Chips Act, and it’s helping advance Europe’s semiconductor technologies. In this episode of Following the Photons, FAMES coordinator Dominique Noguet talks with host Justine Murphy about the initiative and related educational training programs, as well as its role in Europe’s ever-advancing semiconductor industry.  Following the

Dual-comb spectroscopy combines high spectral resolution, broad spectral coverage, and short acquisition times. While the approach is known for its strengths within the infrared (IR) spectral region, the UV spectral region remains somewhat underexplored because of the lack of direct frequency comb sources. But the UV spectral region “is extremely important, and our device lets

In this episode of Photonics Hot List: Researchers at the University of Rochester’s Institute of Optics have developed a solar-thermal process for turning ocean water into fresh drinking water, using little energy and no chemical additives. Business news roundup: Optics manufacturer Zeiss is reporting slow sales, while Corning, in a deal with Amazon, will add new

On-chip ultrafast laser design The laser is essentially constructed from a piece of erbium-doped silicon nitride waveguide sandwiched between two Bragg gratings, pumped with (currently) off-chip 1480-nm continuous-wave diodes. “Using the Mamyshev oscillator concept, the two gratings are deliberately offset in wavelength so continuous-wave lasing can’t be sustained,” explains Qiu. “No single wavelength is reflected