Research‎ > ‎

CARS microscopy

Abstract

Coherent Anti-Stokes Raman Scattering(CARS) is a powerful microscopy which can observe the cell and the special material in the tissue without labeling.CARS combines optical spectroscopy and microscopy.It provides a direct and noninvasive approach to visualizing nucleic acids,proteins,and other molecules at work in living cells. The image of generation is high sensitivity,high contast ,high speed,low photodamge and three-dimensional image.Because of the above advantage,making CARS begin useful technique.



principle 

CARS is a four wave mixing process in which a pump field ,a Stokes field,and a probe field interact with a sample and generate an anti-Stokes field.



Experimental setup 


Application 

Application of CARS in biological systems is mainly used to detect the C-H bond because of the large number of C-H bonds in the cell.

        

Actually, detection of CARS's signal is 650 nm,and energy level will react immediate,so lifetime of CARS's signal begin 0.

RELATED publications

  1. Aaron D. Slepkov, Andrew Ridsdale, a Huei-Ning Wan, b Ming-Hao Wang, et al. "Forward-collected simultaneous fluorescence lifetime imaging and coherent anti-Stokes Raman scattering microscopy" Journal of Biomedical Optics 16(2), 021103 (February 2011).