Optical frequency combs constitute a transformative class of light sources that emit a spectrum of discrete, equally spaced lines spanning hundreds of terahertz. Generated most commonly by mode-locked ...

Optical frequency combs are spectra comprising a series of equally spaced, phase-coherent laser lines that act as precise rulers in the frequency domain. While initial combs emerged from mode-locked ...

Optical frequency combs—laser sources that emit evenly spaced colors of light—are foundational, ubiquitous tools for precision measurement, found in optical clocks, gas-sensing spectrometers, and ...

Caltech scientists have developed a new way to produce optical frequency combs—important tools in devices that keep time and measure distances very precisely—at the chip scale, an advance that should ...

Illustration of a Raman-suppressed, X-cut thin film lithium niobate racetrack microresonator used for microcomb generation. Harvard researchers have demonstrated a special type of optical frequency ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Here’s what you’ll learn when you read this story: Frequency combs split laser light ...

The new approach produces extremely accurate and stable frequencies and could significantly enhance precision timekeeping and high-resolution atomic and molecular spectroscopy. WASHINGTON — ...

Researchers in Japan have developed a microwave-based plasma measurement system capable of simultaneously monitoring ...

Key result A six-year-long research effort has seen researchers in Canada build a chip-scale device that can generate multiphoton entangled states. (Courtesy: Ultrafast Optical Processing Group) ...

A recent study published in the journal Nature Communications introduces a frequency-comb-referenced terahertz (THz) Fabry–Pérot interferometry platform for high-precision battery electrode metrology.

There are significantly different architectures for what are known as “atomic” clocks. Optically driven atomic clocks offer a new set of performance attributes. The optical atomic clocks use paired ...

It may seem at times that there is a divide between the optical/photonic domain and the RF one, with the terahertz zone between them as a demarcation. If you need to make a transition between the ...