Background-free 3D chemical imaging based on polarization coherent Raman holography.
We report on a holographic coherent anti-Stokes Raman scattering imaging by using polarization discrimination for nonresonant background suppression. With reduced polarization scrambling effect under weakly focused excitation, nonresonant background-free coherent Raman imaging is demonstrated. A fast chemically selective imaging is achieved in a three-dimensional volume of 70  μm ×70  μm ×100  μm in 2 s.
Yonggang
Y
Lv
Ziheng
Z
Ji
Hong
H
Yang
Kebin
K
Shi
Qihuang
Q
Gong