News tagged with frequency comb
Scientists Build First 'Frequency Comb' To Display Visible 'Teeth'
Oct 29, 2009 |
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(PhysOrg.com) -- Finally, an optical frequency comb that visibly lives up to its name. Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology in the U.S. ...
Creating the astro-comb to locate Earth-like planets
May 07, 2009 |
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Researchers at the Harvard-Smithsonian Center for Astrophysics in Cambridge, Mass. have created an "astro-comb" to help astronomers detect lighter planets, more like Earth, around distant stars. The Harvard group will present ...
An accurate speedometer for astronomy
Sep 09, 2008 |
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Events on a cosmic scale are often barely discernable on Earth. This explains why astronomers are currently not able to prove directly that the universe is expanding at an ever increasing rate, nor can they ...
A fine-tooth comb to measure the accelerating universe
Sep 04, 2008 |
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Astronomical instruments needed to answer crucial questions, such as the search for Earth-like planets or the way the Universe expands, have come a step closer with the first demonstration at the telescope ...
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'Tunable' network features coordinated frequency combs
May 11, 2007 |
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A super stable fiber-optic network that can be tuned across a range of visible and near-infrared frequencies while synchronizing the oscillations of light waves from different sources has been demonstrated at the National ...
Purdue 'milestone' a step toward advanced sensors, communications
Aug 01, 2007 |
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Engineers at Purdue University have shown how to finely control the spectral properties of ultrafast light pulses, a step toward creating advanced sensors, more powerful communications technologies and more ...
Record-setting Laser May Aid Searches for Earthlike Planets
May 05, 2008 |
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Scientists at the University of Konstanz in Germany and the National Institute of Standards and Technology (NIST) have demonstrated an ultrafast laser that offers a record combination of high speed, short ...
Atomic fountain clocks are becoming still more stable
Mar 18, 2009 |
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They are at present the most accurate clocks in the world: Caesium fountain clocks furnish the second accurate to 15 places after the decimal point. Until they reach this accuracy, caesium fountain clocks, however, need a ...
Technique reveals colors and intensity of all lightwaves simultaneously
Feb 07, 2007 |
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Physicists at the Commerce Department's National Institute of Standards and Technology have taken the first ever two-dimensional pictures of a "frequency comb," providing extra information that enhances the ...
Enhanced LIDAR improves range, vibration measures
Physics /
Feb 02, 2006 |
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Scientists at the National Institute of Standards and Technology have demonstrated the use of an ultrafast laser "frequency comb" system for improved remote measurements of distance and vibration. The technology, ...
LIDAR system offers peerless precision in remote measurements
May 24, 2009 |
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By combining the best of two different distance measurement approaches with a super-accurate technology called an optical frequency comb, researchers at the National Institute of Standards and Technology have built a laser ...
Laser light may be able to detect diseases on the breath
Feb 18, 2008 |
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By blasting a person's breath with laser light, scientists from the National Institute of Standards and Technology and the University of Colorado at Boulder have shown that they can detect molecules that may ...
Physicist proposes to use femtosecond, chirped laser pulse trains to reduce decoherence
Nov 10, 2008 |
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In a recent publication in the high impact journal Optics Letters, Svetlana Malinovskaya, Associate Professor of Physics at Stevens Institute of Technology, proposes to use femtosecond, chirped laser pulse trains to reduce ...
Atomic clock signals may be best shared by fiber-optics
Mar 02, 2007 |
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Time and frequency information can be transferred between laboratories or to other users in several ways, often using the Global Positioning System (GPS). But today's best atomic clocks are so accurate—neither gaining nor ...
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