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First ‘metasurface’ high-power laser for terahertz range

First metasurface high power laser for terahertz range_popup

Some of the researchers at the School of UCLA Henry Engineering and the applied Sciences have then identified a new semiconductor laser that will be operating at the terahertz frequencies . Terahertz waves are basically used to take part in the analyzing of the clothing, semiconductors, plastics and other art materials to be examined they have a chemical sealing and identification.


Just to make it possible an external cavity was maintained and the ULCA researchers have taken a reflectarray metasurfcae mirror. it doesn’t ‘see’ the cavities, but is reflected as if it were being reflected from a simple, flat mirror. Unlike a mirror however, the device amplifies the terahertz waves as well as reflecting them.



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