| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1250770 | Vibrational Spectroscopy | 2009 | 5 Pages |
Abstract
Focus-engineered coherent anti-Stokes Raman scattering (FE-CARS) microscopy is used to visualize microscopic samples with differential imaging contrast in both longitudinal and lateral directions. Multi-dimensional contrast is achieved by applying a one-dimensional Ï-phase step in the transverse beam profile of the Stokes beam. The observed longitudinal differential contrast results from fortuitous phase-matching at axial interfaces and is highly sensitive to the resonant part of the third-order susceptibility. Based on phase-sensitive recordings of the vibrational spectrum of dimethyl sulfoxide in the CH3-stretching range, it is shown that FE-CARS uniquely probes the spectral phase of the Raman bands of the sample.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Vishnu Vardhan Krishnamachari, Eric Olaf Potma,