Mechanisms of Epi-Detected Stimulated Raman Scattering Microscopy

Epi-detection is indispensible for stimulated Raman scattering (SRS) imaging of opaque samples. We present an analysis of the mechanisms underlying the generation of epi-detected SRS signals. By study of forward- and epi-detected SRS signals from pharmaceutical films of controlled thickness and scat...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 2012-01, Vol.18 (1), p.384-388
Main Authors: Pu Wang, Slipchenko, M. N., Bo Zhou, Pinal, R., Ji-Xin Cheng
Format: Article
Language:English
Subjects:
Laser beams
Local oscillators
Microscopy
nonlinear optical microscopy
Photonics
Raman scattering
scattering
stimulated Raman scattering (SRS)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Epi-detection is indispensible for stimulated Raman scattering (SRS) imaging of opaque samples. We present an analysis of the mechanisms underlying the generation of epi-detected SRS signals. By study of forward- and epi-detected SRS signals from pharmaceutical films of controlled thickness and scatterer density, we show that the epi-detected SRS signal arises from the backscattering of the forward-propagating probe photons. Furthermore, we show that both forward- and epi-detected SRS signal intensity linearly depends on the local oscillator power at the detector at the same slope. Under the same excitation conditions, stimulated Raman loss produces a larger epi-detected signal than stimulated Raman gain due to the larger scattering cross section of light with a shorter wavelength.
ISSN:1077-260X
1558-4542
DOI:10.1109/JSTQE.2011.2157463