A study by researchers at Macquarie University, based in Sydney, Australia, has found a new way to make ultra-pure frequency lasers based on diamond that avoids the problems responsible for ...

The Fourier transform is one of the most fundamental concepts in the information sciences. It's a method for representing an irregular signal — such as the voltage fluctuations in the wire that ...

The Fourier transform, which splits a complicated signal into individual pure frequencies, was devised over 200 years ago but only became widely used after the development of an algorithm called the ...

A revolutionary kind of laser light called an optical frequency comb makes possible a more precise type of atomic clock and many other applications In the blink of an eye, a wave of visible light ...

Researchers have developed a new algorithm that, in a large range of practically important cases, improves on the fast Fourier transform. Under some circumstances, the improvement can be dramatic -- a ...