14
November 2002
Applied physics: Terahertz power boost
There is much effort being put into the development of powerful sources of terahertz (THz) radiation, in the far-infrared region where electronics and photonics meet. Potential applications include THz spectroscopy of semiconductor materials and medical imaging. A new approach, based on synchrotron radiation from accelerated electrons, has been used to generate broadband THz radiation with an average power of 20 watts, 100,000 times more intense than the best existing sources.
High-power terahertz radiation from relativistic electrons
G. L. CARR, MICHAEL C. MARTIN, WAYNE R. MCKINNEY, K. JORDAN,
GEORGE R. NEIL & G. P. WILLIAMS
Nature 420, 153–156
(2002); doi:10.1038/nature01175
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Applied physics: Terahertz power
MARK
SHERWIN
Although radiation at terahertz frequencies has many uses, most sources
cannot generate terahertz beams with great power. Magnetic manipulation of energetic
electrons inside a particle accelerator offers a solution.
Nature 420,
131–133 (2002); doi:10.1038/420131a
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