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Latest Far-infrared laser Stories

Leeds Researchers Build Most Powerful Terahertz Laser Chip In The World
2014-02-18 10:36:09

University of Leeds University of Leeds researchers have taken the lead in the race to build the world’s most powerful terahertz laser chip. A paper in the Institution of Engineering and Technology’s (IET) journal Electronics Letters reports that the Leeds team has exceeded a 1 Watt output power from a quantum cascade terahertz laser. The new record more than doubles landmarks set by the Massachusetts Institute of Technology (MIT) and subsequently by a team from Vienna last year....

World’s Most Powerful Terahertz Quantum Cascade Laser Developed
2013-10-30 10:39:08

Vienna University of Technology Whether it is diagnostic imaging, analysis of unknown substances or ultrafast communication – terahertz radiation sources are becoming more and more important. At the Vienna University of Technology, an important breakthrough has been achieved. Terahertz waves are invisible, but incredibly useful; they can penetrate many materials which are opaque to visible light and they are perfect for detecting a variety of molecules. Terahertz radiation can be...

2013-03-08 00:42:34

First isolator for broadband terahertz Dr. Roberto Morandotti and his team at the INRS Énergie Matériaux Télécommunications Research Centre have developed a device that is critical to the use of terahertz (THz) sources for a variety of applications. Their electromagnetic non-reciprocal isolator is the subject of a recent article in Nature Communications, showing just how important this new development is. Until now, no isolator existed...

2011-10-03 13:54:42

Researchers at Northwestern University have developed a simpler way to generate single-chip terahertz radiation, a discovery that could soon allow for more rapid security screening, border protection, high sensitivity biological/chemical analysis, agricultural inspection, and astronomical applications. The work, headed by Manijeh Razeghi, Walter P. Murphy Professor of Electrical Engineering and Computer Science in the McCormick School of Engineering and Applied Science, was published...

2011-07-20 13:03:22

Terahertz radiation can penetrate numerous materials"”plastic, clothing, paper and some biological tissues"”making it an attractive candidate for applications such as concealed weapons detection, package inspection and imaging skin tumors. However, to date there is no standard method for measuring the absolute output power of terahertz lasers, one source of this type of radiation. Now, researchers at the National Institute of Standards and Technology (NIST) have found that dense...

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2010-08-09 06:30:20

Advance in metamaterials leads to a new semiconductor laser suitable for security screening, chemical sensing and astronomy A collaborative team of applied scientists from Harvard University and the University of Leeds have demonstrated a new terahertz (THz) semiconductor laser that emits beams with a much smaller divergence than conventional THz laser sources. The advance, published in the August 8th issue of Nature Materials, opens the door to a wide range of applications in terahertz...

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2009-12-07 10:35:00

MIT researchers have developed a new way to tune the frequency of lasers that operate in the terahertz spectrum. The result is an important step toward airport scanners that could tell whether a vial in a closed suitcase contains aspirin, methamphetamines or an explosive. Tucked between microwaves and infrared rays on the electromagnetic spectrum, terahertz rays can penetrate clothing, plastic, and human tissue, but they're thought to be safer than x-rays. Since they're absorbed to different...

2009-12-02 10:25:45

Northwestern University researchers have achieved a breakthrough in quantum cascade laser output power, delivering 120 watts from a single device at room temperature. The results are particularly attractive for infrared countermeasure, a way of misguiding incoming missiles to protect commercial and military aircrafts. The research, led by Manijeh Razeghi, Walter P. Murphy Professor of Electrical Engineering and Computer Science at the McCormick School of Engineering and Applied Science, was...

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2009-11-05 10:26:26

Coherent Inc., a world leader in laser technology with headquarters in the USA, and the PTB have joined their expertise in Terahertz technology Terahertz radiation still lies in a metrological no man's land "“ a metrology gap. The Physikalisch-Technische Bundesanstalt (PTB) can now close this gap. For the first time, a commercial Terahertz laser was traced back to the international system of units (SI) by measuring its output power absolutely. PTB achieved this success with a power...

2005-08-08 18:35:00

EVANSTON, Ill. -- The difficulty of detecting the presence of explosives and chemical warfare agents (CWAs) is once again all too apparent in the news about the London bombings. In a significant breakthrough, researchers at Northwestern University's Center for Quantum Devices have demonstrated a specialized diode laser that holds promise as a weapon of defense in both civilian and military applications. Once optimized, the tiny laser could quickly detect explosives and CWAs early and warn...


Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.