Highly efficient second-harmonic nanosource for near-field optics and microscopy

被引：25
作者：
Labardi, M
Allegrini, M
Zavelani-Rossi, M
Polli, D
Cerullo, G
De Silvestri, S
Svelto, O
机构：
[1] Univ Pisa, Ist Nazl Fis Mat, I-56127 Pisa, Italy
[2] Politecn Milan, Dipartimento Fis, CNR,Natl Lab Ultrafast & Ultraintense Opt Sci, Ist Foton & Nanotecnol,Ist Nazl Fis Mat, I-20133 Milan, Italy
来源：
OPTICS LETTERS | 2004年 / 29卷 / 01期
关键词：
D O I：
10.1364/OL.29.000062
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A nanometric source of second-harmonic (SH) light with unprecedented efficiency is demonstrated; it exploits the grazing-incidence illumination of a metal tip, which is conventionally used for atomic force microscopy, by 25-fs laser pulses of a high-energy Ti:sapphire oscillator. Tip scanning around the beam focus shows that the SH generation is strongly localized at its apex. The polarization dependence of the SH light complies with the model of an on-axis nonlinear oscillating dipole. (C) 2004 Optical Society of America.
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页码：62 / 64
页数：3
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