Latest Nonlinear optics Stories

World's Shortest Laser Pulse Created By Researchers
2012-09-04 14:32:27

A University of Central Florida research team has created the world's shortest laser pulse and in the process may have given scientists a new tool to watch quantum mechanics in action — something that has been hidden from view until now. UCF Professor Zenghu Chang from the Department of Physics and the College of Optics and Photonics, led the effort that generated a 67-attosecond pulse of extreme ultraviolet light. The results of his research are published online under Early Posting...

Laser Frequency Comb Helps Evaluate Novel Biomedical Decontamination Method
2012-06-14 12:20:07

Like many new measurement tools, the laser frequency comb seemed at first a curiosity but has found more practical uses than originally imagined. The technique for making extraordinarily precise measurements of frequency has now moved beyond physics and optics to advance biomedicine by helping researchers evaluate a novel instrument that kills harmful bacteria without the use of liquid chemicals or high temperatures. Generated by ultrafast lasers, frequency combs precisely measure...

2012-05-04 09:12:36

Switching light with light: only 140 photons are needed An optical switch developed at the Joint Quantum Institute (JQI) spurs the prospective integration of photonics and electronics. What, isn't electronics good enough? Well, nothing travels faster than light, and in the effort to speed up the processing and transmission of information, the combined use of light parcels (photons) along with electricity parcels (electrons) is desirable for developing a workable opto-electronic protocol....

Lighthouses May Help Illuminate The Tempestuous Sea
2012-04-30 08:46:21

Physicists have long chased an elusive goal: the ability to "freeze" and then study the motion of electrons in matter. Such experiments could help confirm theories of electron motion and yield insights into how and why chemical reactions take place. Now a collaboration of scientists from France and Canada has developed an elegant new method to study electrons' fleeting antics using isolated, precisely timed, and incredibly fast pulses of light. The team will describe the technique at the...

2012-04-23 22:21:23

Femtosecond bursts bring new precision to laser surgery Whether surgeons slice with a traditional scalpel or cut away with a surgical laser, most medical operations end up removing some healthy tissue, along with the bad. This means that for delicate areas like the brain, throat, and digestive tract, physicians and patients have to balance the benefits of treatment against possible collateral damage. To help shift this balance in the patient's favor, a team of researchers from the...

2012-03-15 23:04:21

A Chinese team has performed simulations to help understand the occurrence of multiple solitary optical waves that are used to reconfigure optical beams Researchers have designed the first theoretical model that describes the occurrence of multiple solitary optical waves, referred to as dark photovoltaic spatial solitons. The findings by Yuhong Zhang, a physicist from the Xi´an Institute of Optics and Precision Mechanics of the Chinese Academy of Science, and his colleagues is about...

2012-03-14 09:35:25

Ultrafast lasers, lasers that emit light pulses that are as short as a few femtoseconds, have enabled a wide-range of fundamental science and applications over the past two decades. To highlight recent state-of-the-art developments in femtosecond lasers, the Optical Society (OSA) today published a series of papers as part of an upcoming special Focus Issue on Modular Ultrafast Lasers in its open-access journal Optics Express. The issue is organized and edited by Wilson Sibbett and Tom Brown...

Move Over GHz, Terahertz Bandwidth Could Make Smartphones 1,000 Times Faster
2012-03-09 04:47:31

Peter Suciu for RedOrbit.com While those Verizon and AT&T commercials may claim that the respective carrier has the “fastest” network for mobile phones, new communications technology could make today´s 3G and 4G networks look as antiquated as the telegram. The whole gigahertz frequency could be made obsolete as a team of researchers at the University of Pittsburgh look to develop a terahertz frequency that could provide a means of transmitting data thousands of...

Word of the Day
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.