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Journal articles
Resolving phase information of the optical local density of state with scattering near-field probes
Abstract : We theoretically discuss the link between the phase measured using a scattering optical scanning near-field microscopy (s-SNOM) and the local density of optical states (LDOS). A remarkable result is that the LDOS information is directly included in the phase of the probe. Therefore by monitoring the spatial variation of the trans-scattering phase, we locally measure the phase modulation associated with the probe and the optical paths. We demonstrate numerically that a technique involving two-phase imaging of a sample with two different sized tips should allow to obtain the image the pLDOS. For this imaging method, numerical comparison with extinction probe measurement shows crucial qualitative and quantitative improvement.
https://hal-utt.archives-ouvertes.fr/hal-02446207
Contributor : Daniel Gavrysiak Connect in order to contact the contributor
Submitted on : Monday, January 20, 2020 - 4:41:38 PM
Last modification on : Wednesday, September 15, 2021 - 3:03:26 PM
Contributor : Daniel Gavrysiak Connect in order to contact the contributor
Submitted on : Monday, January 20, 2020 - 4:41:38 PM
Last modification on : Wednesday, September 15, 2021 - 3:03:26 PM