Author: Gilles Lerondel

0000000000204287

AUTHOR

Gilles Lerondel

Optical Properties of hybridized arrays of subwavelength holes in a metallic film

International audience

Apertureless scanning near-field optical microscopy: a comparison between homodyne and heterodyne approaches

International audience; In coherent homodyne apertureless scanning near-field optical microscopy (ASNOM) the background field cannot be fully suppressed because of the interference between the different collected fields, making the images difficult to interpret. We show that implementing the heterodyne version of ASNOM allows one to overcome this issue. We present a comparison between homodyne and heterodyne ASNOM through near-field analysis of gold nanowells, integrated waveguides, and a single evanescent wave generated by total internal reflection. The heterodyne approach allows for the control of the interferometric effect with the background light. In particular, the undesirable backgro…

research product

PEPhysical Sciences and Engineering
- PE2Fundamental Constituents of Matter
  - PE2_1Theory of fundamental interactions
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  - PE2_10Atomic, molecular physics
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- PE1Mathematics
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LSLife Sciences
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SHSocial Sciences and Humanities
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