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 ...

Researchers developed a frequency-comb-referenced terahertz Fabry-Pérot interferometry platform that measures lithium-ion ...

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 ...

Beyond the use of optical frequency combs as precision clock sources in the optical region, researchers have developed a way ...

Optical frequency combs have revolutionized technologies such as atomic clocks, spectroscopy, and ultra-fast lasers by acting as precise bridges between optical and microwave frequencies. As the ...

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

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 ...

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 ...

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) ...

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 ...