Optical Society of America

Tiny lasers get a notch up

Tiny disk-shaped lasers as small as a speck of dust could one day beam information through optical computers. Unfortunately, a perfect disk will spray light out, not as a beam, but in all directions. New theoretical results, ...

Jan 22, 2009 4.2 / 5 (6) 0

Direct laser cooling of molecules

Cooling molecules with lasers is harder than cooling individual atoms with lasers. The very process of laser cooling, in which atoms are buffeted by thousands of photons, was thought by many to be impossible for molecules ...

Oct 21, 2010 5 / 5 (4) 1

Engineering algae to make fuel instead of sugar

In pursuing cleaner energy there is such a thing as being too green. Unicellular microalgae, for instance, can be considered too green. In a paper in a special energy issue of Optics Express, the Optical Society's (OSA) ...

Dec 17, 2008 4.4 / 5 (19) 1

Taking a closer look at plaque

A team of University of Rochester scientists is using the technique of Raman spectroscopy to study two common dental plaque bacteria, Streptococcus sanguis and mutans. The relative balance of the two may be an indicator of ...

Oct 26, 2010 5 / 5 (1) 0

The hair brush that reads your mind

(PhysOrg.com) -- One of the main techniques for measuring and monitoring mental activity, called functional near infrared spectroscopy (fNIRS), can often be impaired because a person's hair gets in the way. But now, thanks ...

Oct 19, 2010 not rated yet 0

From the desk lamp to the desktop?

In the future, getting a broadband connection might be as simple as flipping on a light switch. In fact, according to a group of researchers from Germany, the light coming from the lamps in your home could one day encode ...

Mar 09, 2010 3.3 / 5 (3) 0

Silicon optical fiber made practical

Scientists at Clemson University for the first time have been able to make a practical optical fiber with a silicon core, according to a new paper published in the current issue of the Optical Society's open-access journal, ...

Oct 28, 2008 4.7 / 5 (18) 0