Title :
Metallic samples investigated by using a scattering near field optical microscope
Author :
Stanciu, George A. ; Stoichita, Catalin ; Hristu, Radu ; Stanciu, Stefan G. ; Tranca, Denis E.
Author_Institution :
Center for Microscopy, Microanal. & Inf. Process., Univ. Politeh. of Bucharest, Bucharest, Romania
Abstract :
Scanning near-field microscopy can overcome diffraction limitation by exploiting the evanescent near fields existing close to any illuminated object. For investigations we used a scattering-type near-field optical microscope (s-SNOM). As the main problem of this kind of microscopy is connected with near field detection we focused on the metallic samples investigations based on the pseudoheterodyne detection. The influence of the oscillating mirror amplitude on the contrast image was studied. Lately the s-SNOM was successfully used for different investigations on the metallic nanoparticles.
Keywords :
light diffraction; nanoparticles; near-field scanning optical microscopy; optical transfer function; contrast image; diffraction limitation; metallic nanoparticles; metallic samples; near field detection; pseudoheterodyne detection; s-SNOM; scattering near field optical microscope; Frequency modulation; Integrated optics; Microscopy; Optical imaging; Optical microscopy; Optical scattering; Optical surface waves; interference; near-field optical microscopy; pseudoheterodyne; scattering;
Conference_Titel :
Transparent Optical Networks (ICTON), 2012 14th International Conference on
Conference_Location :
Coventry
Print_ISBN :
978-1-4673-2228-7
Electronic_ISBN :
2161-2056
DOI :
10.1109/ICTON.2012.6253948
