Scientists have been able to create a 1-watt quantum cascade laser terahertz

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POSTER: computer news   ||   SCIENTISTS HAVE BEEN ABLE TO CREATE A 1-WATT QUANTUM CASCADE LASER TERAHERTZ	DATE:2014-02-18
Scientists at the University of Leeds (England) reported the establishment of the power semiconductor quantum cascade laser terahertz.  This is a very good range of mass practical applications.  With the help of radiation in the terahertz range, which is located between the infrared and microwave range can be considered objects invisible because opaque barriers, to determine the degree of air pollution, to seek explosives and cancer cells.  Such installations exist.  The main task - is to make them compact, inexpensive and powerful enough. According to the developers of Leeds, they have created a radiation source with a capacity exceeding 1 W, it is almost twice as powerful than able to create in the past year, scientists from Austria.  Then - in September 2013 - at the Vienna University of Technology has been set yet another record in the creation of terahertz quantum cascade laser, which corresponded to the resulting output power at 0.47 watts.   The problem is a very complex process technology for the manufacture of such a laser, which consists of a series of very thin layers of different materials.  For example, a layer of gallium arsenide to be created in a single pass and having a thickness of one atom.  And these layers may be from 1000 to 2000.   Related Products :

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