 |
École polytechnique Open archive |  |
 |
Journal articles
Polarization-resolved Second Harmonic microscopy in anisotropic thick tissues
Abstract : We thoroughly analyze the linear propagation effects that affect polarization-resolved Second Harmonic Generation imaging of thick anisotropic tissues such as collagenous tissues. We develop a theoretical model that fully accounts for birefringence and diattenuation along the excitation propagation, and polarization scrambling upon scattering of the harmonic signal. We obtain an excellent agreement with polarization-resolved SHG images at increasing depth within a rat-tail tendon for both polarizations of the forward SHG signal. Most notably, we observe interference fringes due to birefringence in the SHG depth profile when excited at π/4 angle from the tendon axis. We also measure artifactual decrease of ρ = χxxx/χxyy with depth due to diattenuation of the excitation. We therefore derive a method that proves reliable to determine both ρ and the tendon birefringence and diattenuation. © 2010 Optical Society of America
https://hal-polytechnique.archives-ouvertes.fr/hal-00807877
Contributor : Denis Roura <>
Submitted on : Tuesday, April 29, 2014 - 4:38:59 PM
Last modification on : Monday, December 7, 2020 - 9:10:04 AM
Long-term archiving on: : Tuesday, July 29, 2014 - 10:41:08 AM
Contributor : Denis Roura <>
Submitted on : Tuesday, April 29, 2014 - 4:38:59 PM
Last modification on : Monday, December 7, 2020 - 9:10:04 AM
Long-term archiving on: : Tuesday, July 29, 2014 - 10:41:08 AM
File
oe-18-18-19339.pdf
Publisher files allowed on an open archive