MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 12
        
application of
coherent anti-Stokes Raman
spectroscopy
4 years ago

Answers : (1)

Gman Namg
420 Points
							
The intensity of Raman transitions may be enhanced by coherent anti-Stokes Raman
spectroscopy. The technique relies on the fact that, if two laser
beams of frequencies ν1 andν2 pass through a sample, then they may mix together and
give rise to coherent radiation of several different frequencies, one of which is

ν ′ = 2ν1 − ν2

Suppose that ν2 is varied until it matches any Stokes line from the sample, such as the
one with frequency ν1 − Δν ; then the coherent emission will have frequency

ν ′ = 2ν1 − (ν1 − Δν) = ν1 + Δν

which is the frequency of the corresponding anti-Stokes line. This coherent radiation
forms a narrow beam of high intensity.

An advantage of CARS is that it can be used to study Raman transitions in the presence
of competing incoherent background radiation, and so can be used to observe
the Raman spectra of species in flames. One example is the vibration–rotation CARS
spectrum of N2 gas in a methane–air flame .
4 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 101 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 110 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details