News tagged with optical wavelengths
Zeroing in on Hubble's constant
Jan 05, 2009 |
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(PhysOrg.com) -- In the early part of the 20th Century, Carnegie astronomer Edwin Hubble discovered that the universe is expanding. The rate of expansion is known as the Hubble constant. Its precise value ...
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Silicon optical fiber made practical
Oct 28, 2008 |
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Scientists at Clemson University for the first time have been able to make a practical optical fiber with a silicon core, according to a new paper published in the current issue of the Optical Society's open-access journal, ...
Team develops tiny optical switch
Dec 20, 2007 |
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A team of researchers at the University of St. Andrews has developed one of the smallest optical switches ever made.
Silicon photonic crystals key to optical cloaking
Jun 25, 2008 |
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In computer simulations, the researchers have demonstrated an approximate cloaking effect created by concentric rings of silicon photonic crystals. The mathematical proof brings scientists a step closer to a practical solution ...
'Strained' quantum dots show new optical properties
Dec 07, 2008 |
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Quantum dots, tiny luminescent particles made of semiconductors, hold promise for detecting and treating cancer earlier. However, if doctors were to use them in humans, quantum dots could have limitations related to their ...
Discovery cuts cost of next generation optical fibers
Jan 17, 2008 |
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Scientists have discovered a way of speeding up the production of hollow-core optical fibres - a new generation of optical fibres that could lead to faster and more powerful computing and telecommunications ...
Single photon detectors for telecommunications wavelengths
Aug 29, 2008 |
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Practically speaking, single photon detection has not been something pursued very heavily at the wavelengths used for telecommunication signals. Part of the problem is that performance of single photon detectors are rather ...
Improved spectrometer based on nonlinear optics
Nov 12, 2008 |
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Scientists at Stanford University and Japan's National Institute of Informatics have created a new highly sensitive infrared spectrometer. The device converts light from the infrared part of the spectrum to the visible ...
Exposing the Sensitivity of Extreme Ultraviolet Photoresists
Jun 26, 2008 |
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Researchers at the National Institute of Standards and Technology (NIST) have confirmed that the photoresists used in next-generation semiconductor manufacturing processes now under development are twice as ...
'Gecko vision': Key to the multifocal contact lens of the future?
May 07, 2009 |
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Nocturnal geckos are among the very few living creatures able to see colors at night, and scientists' discovery of series of distinct concentric zones may lead to insight into better cameras and contact lenses.
Seeing clearly despite the clouds
Space & Earth / Earth Sciences
Apr 18, 2008 |
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Satellites taking atmospheric measurements might now be able to see blue skies as clearly as optimists do. Researchers have found a way to reduce cloud-induced glare when satellites measure blue skies on cloudy ...
List of search results for optical wavelengths
