Since the first quantum cascade (QC) laser was demonstrated in 1994 and implemented in THz regime in 2002, they have become one of the most important solid state light sources in this frequency range. The metal-metal (MM) ...
Optics & Photonics
Oct 3, 2013
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If the brain starts to swell after a stroke, surgery is often the only treatment option – one in which the physicians open the patient's cranial vault. Up to now, they would reach for the drill and the saw. Soon, a laser ...
Engineering
May 15, 2013
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High-performance loudspeaker manufacturers have been able to improve sound quality dramatically over the years, but still face the issue of dead spots.
General Physics
Nov 8, 2011
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(PhysOrg.com) -- While the laws of physics weren't made to be broken, sometimes they need revision. A major current law has been rewritten thanks to the three-port transistor laser, developed by Milton Feng and Nick Holonyak ...
General Physics
May 12, 2010
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Northwestern University researchers have achieved a breakthrough in quantum cascade laser output power, delivering 120 watts from a single device at room temperature.
Quantum Physics
Dec 1, 2009
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(PhysOrg.com) -- Polishing metal surfaces is a demanding but monotonous task, and it is difficult to find qualified young specialists. Polishing machines do not represent an adequate alternative because they cannot get to ...
Engineering
Nov 3, 2009
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(PhysOrg.com) -- Sharp Corporation has announced the development of a new 500 mW semiconductor laser for triple- and quadruple- layer Blu-ray discs.
(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 laser ...
Nanomaterials
Jun 4, 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 ...
General Physics
Mar 18, 2009
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