The optical frequency comb, a spectrum of optical radiation composed of evenly spaced and phase-coherent narrow spectral lines, was initially developed for precise time and frequency measurements. Over the past two decades, ...
Optics & Photonics
Apr 1, 2024
0
8
In a new Nature study, Columbia Engineering researchers have built a photonic chip that is able to produce high-quality, ultra-low-noise microwave signals using only a single laser. The compact device—a chip so small, it ...
Optics & Photonics
Mar 20, 2024
0
503
Chip-based devices known as frequency combs, which measure the frequency of light waves with unparalleled precision, have revolutionized timekeeping, the detection of planets outside of our solar system and high-speed optical ...
Optics & Photonics
Mar 14, 2024
0
163
Ultraviolet spectroscopy plays a critical role in the study of electronic transitions in atoms and rovibronic transitions in molecules. These studies are essential for tests of fundamental physics, quantum-electrodynamics ...
Optics & Photonics
Mar 7, 2024
0
60
Stanford researchers have unveiled a new type of frequency comb, a high-precision measurement device, that is innovatively small, ultra-energy efficient, and exceptionally accurate. With continued development, this breakthrough ...
Optics & Photonics
Mar 6, 2024
0
36
Researchers at the National Institute of Standards and Technology (NIST) have upgraded a highly precise technology designed to monitor emissions of methane, a critical greenhouse gas, and other trace gases, even in harsh ...
Earth Sciences
Jan 16, 2024
0
69
Optical chip-related technology is the inevitable path to retain the validity of Moore's Law, which has become the consensus of academia and industry; it can effectively solve the speed and power consumption problems of electronic ...
Optics & Photonics
Jan 15, 2024
0
11
From monitoring concentrations of greenhouse gases to detecting COVID in the breath, laser systems known as frequency combs can identify specific molecules as simple as carbon dioxide and as complex as monoclonal antibodies ...
Optics & Photonics
Oct 30, 2023
0
88
The optical frequency comb is an important tool in modern physics research and applications. In 2005, Theodor W. Hänsch and John L. Hall were awarded the Nobel Prize in Physics for their pioneering work on optical frequency ...
Optics & Photonics
Oct 27, 2023
0
15
Bio-sensors are biomolecular sensors that leverage or mimic the sophisticated molecular recognition capabilities of living organisms. They find widespread applications in fields such as health care, food, and the environment.
Optics & Photonics
Sep 26, 2023
0
27
