Optical Society of America

Long distance, top secret messages

When the military needs to send the key to encrypted data across the world, it can't necessarily rely on today's communication lines, where the message could be covertly intercepted. But physicists at the Georgia Institute ...

Oct 19, 2010 4.3 / 5 (4) 0 | with audio podcast

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

All That Glitters Is Now Gold

(PhysOrg.com) -- In full sunlight at mid-day, gold objects are brilliant and richly colored. Put those same objects in a dark interior room with only fluorescent lamps, however, and they will look pale and ...

Oct 01, 2009 3.4 / 5 (5) 0

Laser Fusion and Exawatt Lasers

(PhysOrg.com) -- In the recent past, producing lasers with terawatt (a trillion watts) beams was impressive. Now petawatt (a thousand trillion watts, or 10^15 watts) lasers are the forefront of laser research. Some labs are ...

Oct 01, 2009 4 / 5 (17) 10

Diamonds are a laser's best friend

(PhysOrg.com) -- Tomorrow's lasers may come with a bit of bling, thanks to a new technology that uses man-made diamonds to enhance the power and capabilities of lasers. Researchers in Australia have now demonstrated the first ...

Sep 18, 2009 4.4 / 5 (10) 1