Multi-dimensional differential imaging with FE-CARS microscopy

被引：13

作者：

Krishnamachari, Vishnu Vardhan ^{[1
]}

Potma, Eric Olaf ^{[1
]}

机构：

[1] Univ Calif Irvine, Dept Chem, Beckman Laser Inst, Irvine, CA 92697 USA

来源：

VIBRATIONAL SPECTROSCOPY | 2009年 / 50卷 / 01期

关键词：

Coherent Raman spectroscopy; CARS microscopy; Focus-engineering; Chemical interfaces; RAMAN SCATTERING MICROSCOPY; COHERENT; INTERFACES;

D O I：

10.1016/j.vibspec.2008.07.009

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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. Multidimensional contrast is achieved by applying a one-dimensional pi-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. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：10 / 14

页数：5

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