News tagged with laser beams
Portable Precision: A New Type of Atomic Clock
Jun 11, 2009 |
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The most accurate atomic clocks in the world are based on the output of cesium atoms. These ultra-precise fountain clocks measure the frequency and time interval of seconds by using a fountain-like movement of cesium atoms. ...
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Building a more versatile laser
Nov 16, 2009 |
4.5 / 5 (19) |
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(PhysOrg.com) -- One of the drawbacks associated with using semiconductor lasers is that many of them can only produce a beam of a single wavelength, and can only send that beam in one direction at a time. ...
Light throws a curve ball
Sep 29, 2008 |
4.7 / 5 (113) |
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(PhysOrg.com) -- Researchers at the University of St Andrews have made a surprise discovery using light beams that can travel around corners.
Physicists hope to tie light beams in knots
Sep 12, 2008 |
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Usually, light beams shine in a straight line, with the possible exception of light being bent by gravity. But scientists are now investigating how to make light beams into looped and knotted configurations. ...
Panasonic Develops High Efficiency CRT Recycling Technology Using Laser
Jul 02, 2009 |
5 / 5 (1) |
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Panasonic has developed a recycling technology using laser beams to separate the front panel and back part (funnel) of a cathode ray tube (CRT) used in TV sets.
Michigan laser beam believed to set record for intensity
Feb 15, 2008 |
4.7 / 5 (121) |
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If you could hold a giant magnifying glass in space and focus all the sunlight shining toward Earth onto one grain of sand, that concentrated ray would approach the intensity of a new laser beam made in a ...
Scientists demonstrate highly directional semiconductor lasers
Jul 27, 2008 |
4.7 / 5 (31) |
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Applied scientists at Harvard collaborating with researchers at Hamamatsu Photonics in Hamamatsu City, Japan, have demonstrated, for the first time, highly directional semiconductor lasers with a much smaller ...
Electron self-injection into an evolving plasma bubble
Nov 02, 2009 |
4.8 / 5 (4) |
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Particle accelerators are among the largest and most expensive scientific instruments. Thirty years ago, theorists John Dawson and Toshiki Tajima proposed an idea for making them thousands of times smaller: ...
Tweezers Trap Nanotubes by Color
Sep 26, 2008 |
4.6 / 5 (7) |
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Singled-walled carbon nanotubes are graphene sheets wrapped into tubes, and are typically made up of various sizes and with different amounts of twist (also known as chiralities). Each type of nanotube has its own electronic ...
Laser Fusion and Exawatt Lasers
Oct 01, 2009 |
4 / 5 (17) |
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(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 ...
Scientists demonstrate multibeam, multi-functional lasers
Nov 30, 2009 |
4.4 / 5 (7) |
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An international team of applied scientists from Harvard, Hamamatsu Photonics, and ETH Zürich have demonstrated compact, multibeam, and multi-wavelength lasers emitting in the invisible part of the light spectrum ...
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