Publication: Phase imaging and detection in pseudo-heterodyne scattering scanning near-field optical microscopy measurements
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2017-02
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The Optical Society Of America
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When considering the pseudo-heterodyne mode for detection of the modulus and phase of the near field from scattering scanning near-field optical microscopy (s-SNOM) measurements, processing only the modulus of the signal may produce an undesired constraint in the accessible values of the phase of the near field. A two-dimensional analysis of the signal provided by the data acquisition system makes it possible to obtain phase maps over the whole [0, 2
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En O.A. en la web del editor.
Received 19 October 2016; revised 20 December 2016; accepted 3 January 2017; posted 5 January 2017 (Doc. ID 279131); published 27 January 2017
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