Quantitative amplitude and phase measurement by use of a heterodyne scanning near-field optical microscope
- 15 February 2001
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 26 (4) , 208-210
- https://doi.org/10.1364/ol.26.000208
Abstract
A coherent photon scanning tunneling microscope is presented. The setup employs heterodyne interferome-try, allowing both the phase and the amplitude of the optical near field to be measured. Experimental results of measurements on a standing evanescent wave reveal the high resolution that is obtainable with such an approach. In fact we have measured the amplitude and the phase of the near field, with a resolution of 1.6 nm between sample points.Keywords
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