Send to

Choose Destination
See comment in PubMed Commons below
Opt Lett. 2004 Jan 1;29(1):62-4.

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

Author information

Istituto Nazionale per la Fisica della Materia, Dipartimento di Fisica, Università di Pisa, Via Buonarroti 2, 56127 Pisa, Italy.


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.

PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Optical Society of America
    Loading ...
    Support Center