News tagged with laser spectroscopy
A new generation of acoustic measurements
NPL scientists have made the first measurements of airborne acoustic free-field pressures using a laser technique based on photon correlation spectroscopy.
May 29, 2012 |
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Atomic clock comparison via data highways
(Phys.org) -- Optical atomic clocks measure time with unprecedented accuracy. However, it is the ability to compare clocks with one another that makes them applicable for high-precision tests in fundamental ...
Apr 27, 2012 |
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LAMIS -- a green chemistry alternative for laser spectroscopy
At some point this year, after NASA's rover Curiosity has landed on Mars, a laser will fire a beam of infrared light at a rock or soil sample. This will "ablate" or vaporize a microgram-sized piece of the ...
Space & Earth / Space Exploration
Mar 01, 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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The interplay of dancing electrons
Negative ions play an important role in everything from how our bodies function to the structure of the universe. Scientists from the University of Gothenburg, Sweden, have now developed a new method that makes it possible ...
Nov 29, 2011 |
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Physicists find charge separation in a molecule consisting of two identical atoms
Physicists from the University of Stuttgart show the first experimental proof of a molecule consisting of two identical atoms that exhibits a permanent electric dipole moment. This observation contradicts ...
Nov 25, 2011 |
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Eye on ionization: Visualizing and controlling bound electron dynamics in strong laser fields
(PhysOrg.com) -- Subatomic events can be remarkably counterintuitive. Such is the case in theoretical physics when, under certain specific conditions, atoms exposed to intense infrared laser pulses remain ...
Oct 19, 2011 |
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Watching electrons in molecules
(PhysOrg.com) -- A research group led by ETH Zurich has now, for the first time, visualized the motion of electrons during a chemical reaction. The new findings in the experiment are of fundamental importance ...
Oct 14, 2011 |
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Laser pioneer or electrochemist for Nobel?
(AP) -- Americans William Moerner, Allen Bard and Richard Zare could be among the potential candidates when the Nobel Prize in chemistry is announced Wednesday.
Oct 05, 2011 |
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New surface nonlinear spectroscopy capability: Picosecond-femtosecond broadband sum frequency generation system
In Dr. Hongfei Wang's spectroscopy laboratory at the end of EMSL's main hallway, the lights are always off. Because the instrumental capability his team has built uses lasers as its main weapon, light interference ...
Chemistry / Analytical Chemistry
Jun 30, 2011 |
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Powerful optical centrifuge created to study dynamics of fast spinning molecules
(PhysOrg.com) -- High-energy molecules play a major role in the chemistry of combustion, plasmas and the atmosphere. Scientists have been able to generate and investigate molecules with large amounts of vibrational, ...
Chemistry / Analytical Chemistry
Apr 11, 2011 |
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Ultra fast photodetectors out of carbon nanotubes
Single-walled carbon nanotubes are promising building blocks for future optoelectronic devices. But conventional electronic measurements were not able to resolve the ultra fast optoelectronic dynamics of the ...
Mar 07, 2011 |
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Nanoparticles may enhance circulating tumor cell detection
(PhysOrg.com) -- Tiny gold particles can help doctors detect tumor cells circulating in the blood of patients with head and neck cancer, researchers at Emory and Georgia Tech have found.
Nanotechnology / Bio & Medicine
Feb 11, 2011 |
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Sugar boost for Oxfordshire scientists who are planning ahead for future medicines
Scientists continuing to investigate a 50 year mystery have discovered another vital clue that could help pave the way for improved medicines. The results feature in a special edition of Nature celebrating the International Year o ...
Feb 04, 2011 |
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New VECSEL could mean a step forward for spectroscopy
(PhysOrg.com) -- "Unfortunately, for spectroscopy, the beam quality of quantum cascade lasers is not satisfying," Hans Zogg tells PhysOrg.com. "We are developing lasers for the mid-infrared range which have an especially good b ...
Oct 25, 2010 |
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