On the actual spatial resolution of Brillouin Imaging
Optics
2020-02-28 v4 Materials Science
Abstract
Brillouin imaging is an emerging optical elastography technique able to generate maps of the mechanical properties at microscale, with great potential in biophysical and biomedical fields. A key parameter is its spatial resolution, which is usually identified with that of the confocal microscope coupled to the Brillouin interferometer. Conversely, here we demonstrate that the mean free path of acoustic phonons plays a major role in defining the resolution, especially for high numerical aperture confocal setups. Surprisingly, the resolution of elastography maps may even deteriorate when decreasing the scattering volume.
Keywords
Cite
@article{arxiv.1911.07709,
title = {On the actual spatial resolution of Brillouin Imaging},
author = {Silvia Caponi and Daniele Fioretto and Maurizio Mattarelli},
journal= {arXiv preprint arXiv:1911.07709},
year = {2020}
}