Optical Society of America

Open wide and say 'zap'

A group of researchers in Australia and Taiwan has developed a new way to analyze the health of human teeth using lasers. As described in the latest issue of Optics Express,, by measuring how the surface of a tooth respon ...

Aug 18, 2009 4 / 5 (1) 0

World's Highest-Resolution Projector

If one were to stack 16 of the world's best high-definition projectors side-by-side (and on top of each other), the combined image projected would contain 33 megapixels. This is the resolution achieved by the world's highest-resolution ...

May 26, 2009 4.1 / 5 (10) 2

Picosecond Oscilloscope

An oscilloscope is a device for displaying signals that are too fast to be seen by the human eye. Typically the signal consists of a voltage level that changes quickly moment by moment (over millisecond to nanosecond timescales). ...

May 26, 2009 4 / 5 (5) 0

Vehicles that drive themselves

The thought of a car or truck that can drive itself is at once both exciting and frightening. Autonomous vehicle navigation, as the technology is known, may make life more convenient if it allows people to kick back and enjoy ...

May 26, 2009 4.7 / 5 (3) 5

Lettuce gets a healthy suntan

Salad dressing aside, a pile of spinach has more nutritional value than a wedge of iceberg lettuce. That's because darker colors in leafy vegetables are often signs of antioxidants that are thought to have a variety of health ...

May 18, 2009 not rated yet 0

De-multiplexing to the max: 640 Gbits/second

Sliced light is how we communicate now. Millions of phone calls and cable television shows per second are dispatched through fibers in the form of digital zeros and ones formed by chopping laser pulses into bits. This slicing ...

Feb 02, 2009 5 / 5 (3) 0

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

Enhancing solar cells with nanoparticles

Deriving plentiful electricity from sunlight at a modest cost is a challenge with immense implications for energy, technology, and climate policy. A paper in a special energy issue of Optics Express, the Optical Society's (OSA) ...

Dec 23, 2008 4.8 / 5 (10) 6

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