High-harmonic generation by resonant plasmon field enhancement

Seungchul Kim, Jonghan Jin, Young-Jin Kim, In-Yong Park, Yunseok Kim and Seung-Woo Kim ()
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Seungchul Kim: Billionth Uncertainty Precision Engineering Group, KAIST, Daedeok Science Town, Daejeon 305-701, South Korea
Jonghan Jin: Billionth Uncertainty Precision Engineering Group, KAIST, Daedeok Science Town, Daejeon 305-701, South Korea
Young-Jin Kim: Billionth Uncertainty Precision Engineering Group, KAIST, Daedeok Science Town, Daejeon 305-701, South Korea
In-Yong Park: Billionth Uncertainty Precision Engineering Group, KAIST, Daedeok Science Town, Daejeon 305-701, South Korea
Yunseok Kim: Billionth Uncertainty Precision Engineering Group, KAIST, Daedeok Science Town, Daejeon 305-701, South Korea
Seung-Woo Kim: Billionth Uncertainty Precision Engineering Group, KAIST, Daedeok Science Town, Daejeon 305-701, South Korea

Nature, 2008, vol. 453, issue 7196, 757-760

Abstract: Extreme UV made easier The properties of coherent EUV (extreme ultraviolet) light make it a prime candidate for exciting technological applications. At present though, the equipment needed to generate the short wavelength light is costly and bulky. A new system described in this issue could reduce both cost and bulk. It uses the conventional principle of high-harmonic generation via the interaction of a femtosecond laser pulse with a gas, but adopts a novel concept of amplifying light via local plasmon field enhancement. The beam from a modest femtosecond laser is focused onto a nanostructure consisting of bow-tie-shaped gold elements on a sapphire substrate. This may enable the construction of a laptop-sized EUV light source at a reasonable cost.

Date: 2008
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DOI: 10.1038/nature07012

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