Abstract
A theory of image formation in a scanning differential heterodyne microscope is developed using the results of observations of a metallized periodic structure with a rectangular profile. The phase and amplitude response functions are calculated for TE and TM polarizations. It is demonstrated that the width of grating elements can be measured with a superresolution. The experimental phase and amplitude responses from a metallized grating with a trapezoidal profile are obtained and compared with the results of theoretical calculations.
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Translated from Optika i Spektroskopiya, Vol. 96, No. 4, 2004, pp. 697–703.
Original Russian Text Copyright © 2004 by Akhmedzhanov, Baranov, Zolotov.
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Akhmedzhanov, I.M., Baranov, D.V. & Zolotov, E.M. Investigation of diffraction gratings with the use of a differential heterodyne microscope. Opt. Spectrosc. 96, 635–640 (2004). https://doi.org/10.1134/1.1719156
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DOI: https://doi.org/10.1134/1.1719156