Terahertz Lasers

Terahertz lasers
Lasers now work at new wavelengths
Aug 8th 2002 [Economist.com: Science & Technology]

Enough progress on this front will dramatically expand the market for wireless communications. Lots of hurdles though – not least of which is getting the lasers to be stable at room temperature. But breakthroughs in medical imaging are almost certain to follow, after which wireless communication (at much longer distances) will open up.

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