GHz apertureless near-field scanning optical microscopy of ferroelectric nanodomain dynamics

Nano Letters
Hongzhou Ma, Jeremy Levy

Abstract

Nanoscale domain dynamics of (Ba,Sr)TiO(3) thin films are investigated at microwave frequencies with a home-developed GHz-frequency apertureless near-field scanning optical microscope (GHz-ANSOM). Using a microwave phase-modulation technique, we decoupled topographic artifacts from the optical signal, providing an enhanced and background-free temporal response. Interleaved acquisition of images taken at sequential time intervals provides amplitude and phase information about the electrooptic response at <50 nm spatial resolution and <10 ps temporal resolution. The local microwave response is highly nonuniform in both the amplitude and the phase.

References

Sep 27, 2000·Physical Review Letters·R Hillenbrand, F Keilmann

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Citations

Nov 28, 2008·Nature·Paul Planken
Apr 11, 2014·Microscopy and Microanalysis : the Official Journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada·Radu HristuGeorge A Stanciu
Jun 7, 2011·Optics Express·Bassam HajjDominique Chauvat

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