News tagged with random lasers
Is random lasing possible with a cold atom cloud?
May 18, 2009 |
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(PhysOrg.com) -- Random lasing, Robin Kaiser tells PhysOrg.com, is like standard lasing, with a little bit of a twist: “You don’t know the direction the photons will go, as you do with a more standard laser. This is becaus ...
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New unifying theory of lasers advanced by physicists
May 27, 2008 |
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Researchers at Yale and the Institute of Quantum Electronics at ETH Zurich have formulated a theory that, allows scientists to better understand and predict the properties of both conventional and non-conventional ...
Can silver nanoparticles be the key to a more compact laser?
Jun 09, 2008 |
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“In random media, multiple scattering and interference reduce the diffusion of light, and in case of extremely strong scattering, photon localization, or Anderson localization of light, is predicted like electrons in glasses,” ...
Semiconductor Lasers Generate Better Random Numbers
Dec 16, 2008 |
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(PhysOrg.com) -- Random numbers -- numbers without any pattern -- are vital to many applications, such as computer simulations, statistics, and cryptography. There are many ways to generate them using unpredictable physical ...
Electrosurgical devices, lasers cited as most common igniters of operating room fires
Oct 06, 2009 |
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While operating room fires can occur in a variety of clinical settings, it is the use of lasers and electrosurgical devices that are most likely to cause them. Those are the findings in new research presented at the 2009 ...
Building a more versatile laser
Nov 16, 2009 |
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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. ...
Nanoparticle Scattering Improves Laser Performance
Nanotechnology / Nanomaterials
Jun 04, 2009 |
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(PhysOrg.com) -- “Light scattering” and “optical performance” are two concepts that usually head in opposite directions, but they have recently been shown to walk happily hand-in-hand. The results are impressive ...
Using lasers to cool and manipulate molecules
Dec 07, 2009 |
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(PhysOrg.com) -- "For years, we have been using laser cooling to trap and manipulate atoms," David DeMille tells PhysOrg.com. "This has been very useful for both basic science and many applications. Recent ...
Advance by chemists may lead to better displays on laptop computers, cell phones
Nanotechnology / Nanomaterials
Sep 18, 2007 |
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UCLA chemists working at the nanoscale have developed a new, inexpensive means of forcing luminescent polymers to give off polarized light and of confining that light to produce polymer-based lasers.
Researchers identify better laser for treating facial spider veins
Oct 06, 2009 |
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(PhysOrg.com) -- Researchers from Boston University School of Medicine (BUSM) have concluded that the 940nm wavelength laser is superior for treating facial spider veins (telangiectasias) as compared to the 532nm wavelength ...
New nanocrystals show potential for cheap lasers, new lighting
May 10, 2009 |
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For more than a decade, scientists have been frustrated in their attempts to create continuously emitting light sources from individual molecules because of an optical quirk called "blinking," but now scientists ...
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