News tagged with laser
Putting the squeeze on planets outside our solar system
(PhysOrg.com) -- Using high-powered lasers, scientists at Lawrence Livermore National Laboratory and collaborators discovered that molten magnesium silicate undergoes a phase change in the liquid state, abruptly ...
17 hours ago |
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Researchers create 3-D laser maps that show how earthquake changes landscape
Geologists have a new tool to study how earthquakes change the landscape down to a few inches, and it's giving them insight into how earthquake faults behave. In the Feb. 10 issue of the journal Science, a team ...
Space & Earth / Earth Sciences
Feb 09, 2012 |
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US plastic surgeries rise for second straight year
The number of Americans getting nips and tucks rose in 2011 for the second straight year despite difficult economic times, a major US plastic surgeons' groups said on Thursday.
Feb 09, 2012 |
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Nanotube therapy takes aim at breast cancer stem cells
Wake Forest Baptist Medical Center researchers have again proven that injecting multiwalled carbon nanotubes (MWCNTs) into tumors and heating them with a quick, 30-second laser treatment can kill them.
Nanotechnology / Bio & Medicine
Feb 09, 2012 |
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Physicists build highly efficient 'no-waste' laser
A team of University of California, San Diego researchers has built the smallest room-temperature nanolaser to date, as well as an even more startling device: a highly efficient, "thresholdless" laser that ...
Feb 08, 2012 |
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Breakthrough in the development of a diagnostic test for oesophageal cancer
A team of scientists, led by the University of Liverpool, has made a major advance in the development of a diagnostic test for oesophageal cancer. The findings, achieved at STFC's ALICE accelerator facility, ...
Feb 08, 2012 |
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With single laser pulses on single molecules
(PhysOrg.com) -- Physicists at MPQ (Max Planck Institute) succeed in resolving the internal dynamics of individual molecules using UV femtosecond laser pulses.
Feb 07, 2012 |
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Researchers at SLAC test collider closer to creating fully coherent X-rays
(PhysOrg.com) -- Many advanced laser technologies, such as laser spectroscopy, that use precise wavelengths of infrared, visible or ultraviolet laser light could benefit from using X-ray light as well. But ...
Feb 01, 2012 |
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Shaken, not heated: The ideal recipe for manipulating magnetism
(PhysOrg.com) -- Scientists have found a way to distort the atomic arrangement and change the magnetic properties of an important class of electronic materials with ultra-short pulses of terahertz (mid-infrared) ...
Feb 01, 2012 |
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Canon to build laser-printer factory in Philippines
Japanese high-tech giant Canon said Tuesday it would build a laser-printer factory in the Philippines in anticipation of strong growth in global demand.
Jan 31, 2012 |
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Nanotube-based terahertz polarizer nears perfection
(PhysOrg.com) -- Researchers at Rice University are using carbon nanotubes as the critical component of a robust terahertz polarizer that could accelerate the development of new security and communication ...
Jan 30, 2012 |
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Scientists X-ray key enzyme of common pathogen crystallized in living cells
An international team of scientists has for the first time crystallised a key enzyme of the pathogen for African sleeping sickness in a living cell and investigated it with the world’s strongest X-ray laser. This new ...
Jan 30, 2012 |
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Guinness World Record: DESY's X-ray laser FLASH shoots fastest movie
It's official: The world's fastest movie was shot by DESY's X-ray laser FLASH in Hamburg, Germany.
Jan 25, 2012 |
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A galactic magnetic field in a lab bolsters astrophysical theory
Why is the universe magnetized? It's a question scientists have been asking for decades. Now, an international team of researchers including a University of Michigan professor have demonstrated that it could ...
Jan 25, 2012 |
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First atomic X-ray laser created
Scientists working at the U.S. Department of Energy's (DOE) SLAC National Accelerator Laboratory have created the shortest, purest X-ray laser pulses ever achieved, fulfilling a 45-year-old prediction and ...
Jan 25, 2012 |
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Laser
A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.
For more information about Laser, read the full article at
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