Menlo's optical frequency combs are a core component of optical clocks, such as this one at JILA. (Courtesy: GE Marti/JILA) This year marks the 20th anniversary of the first time an optical-frequency ...

Discover how frequency combs, specialized lasers with evenly spaced frequencies, enable precise light frequency comparison ...

Scientists in the UK think they may have found a cheap, low-tech way to help fight age-related loss of vision. In a small clinical trial, people over 40 who were told to stare into a deep red light ...

Doubling up: Georgia Tech researchers Kyu-Tae Lee (left) and Mohammad Taghinejad demonstrate frequency doubling on a slab of titanium dioxide using a red laser to create nonlinear effects with tiny ...

Red light therapy has gained attention as a skincare method that supports a healthier complexion. Many people see it as an option for facials that promote a smoother appearance and an even tone. This ...