Use of vector diffraction theory in theoretical and experimental investigation of SNOM tips

Nikolay B. Voznesensky; Vadim P. Veiko

doi:10.1117/12.449528

5 December 2001 Use of vector diffraction theory in theoretical and experimental investigation of SNOM tips

Proceedings Volume 4456, Controlling and Using Light in Nanometric Domains; (2001) https://doi.org/10.1117/12.449528
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

An approach to the optical investigation of probes for scanning near-field optical microscopes (SNOM tips) and recognition of their near-field parameters by far-field measurements is considered. The comparison of approximate calculations of vector light field diffracted by a subwavelength aperture with more rigorous calculations of the light field passing through tapered end of a SNOM tip is presented. A numerical iterative procedure of the SNOM tip aperture reconstruction by the analytical continuation of the emerging light Fourier spectrum is presented. The approach is based on the use of plane waves covering a wide range of spatial frequencies. The results of experimental measurements and far-field data treatment with the definition of a subwavelength aperture are discussed.

Citation Download Citation

Nikolay B. Voznesensky and Vadim P. Veiko "Use of vector diffraction theory in theoretical and experimental investigation of SNOM tips", Proc. SPIE 4456, Controlling and Using Light in Nanometric Domains, (5 December 2001); https://doi.org/10.1117/12.449528

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