期刊
NATURE PHYSICS
卷 13, 期 7, 页码 659-+出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NPHYS4087
关键词
-
资金
- Air Force Office of Scientific Research [FA9550-16-1-0109]
- AFOSR MURI [FA9550-15-1-0037]
- NRC
- NSERC
- CFI/ORF
Plasmonic antennas can enhance the intensity of a nanojoule laser pulse by localizing the electric field in their proximity(1). It has been proposed that the field can become strong enough to convert the fundamental laser frequency into high-order harmonics through an extremely nonlinear interaction with gas atoms that occupy the nanoscopic volume surrounding the antennas(2-4). However, the small number of gas atoms that can occupy this volume limits the generation of high harmonics(5-7). Herewe use an array of monopole nano-antennas to demonstrate plasmon-assisted high-harmonic generation directly from the supporting crystalline silicon substrate. The high density of the substrate compared with a gas allows macroscopic buildup of harmonic emission. Despite the sparse coverage of antennas on the surface, harmonic emission is ten times brighter than without antennas. Imaging the high-harmonic radiation will allow nanometre and attosecond measurement of the plasmonic field(8) thereby enabling more sensitive plasmon sensors(9) while opening a new path to extreme-ultraviolet-frequency combs(10).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据