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Discuss CARS (Coherent Anti-Stokes Raman Scattering) microscopy and its applications. I dont understand the process which two...

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Physics

Discuss CARS (Coherent Anti-Stokes Raman Scattering)microscopy and its applications.

I dont understand the process which two lasers (stokes &pump) interact together in the sample and causing a vibrationalmode. Please describe this part well. Thank you. and how is thesignal transferred so the imaged can be created?

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3.6 Ratings (311 Votes)
CARS process can be physically explained by using either a classical oscillator model or by using a quantum mechanical mode 1 Classical Classically the Raman active vibrator is modeled as a harmonic oscillator with a characteristic frequency of v The difference frequency pS between the pump and the Stokes beams drives this oscillator instead of single optical wave When the difference frequency pS approaches v the oscillator is driven very efficiently On a molecular level this implies that the electron cloud surrounding the    See Answer
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