Selective excitation and suppression of coherent anti-Stokes Raman scattering by shaping femtosecond pulses

doi:10.1088/1674-1056/19/4/043201

Abstract Femtosecond coherent anti-Stokes Raman scattering (CARS) suffers from poor selectivity between neighbouring Raman levels due to the large bandwidth of the femtosecond pulses. This paper provides a new method to realize the selective excitation and suppression of femtosecond CARS by manipulating both the probe and pump (or Stokes) spectra. These theoretical results indicate that the CARS signals between neighbouring Raman levels are differentiated from their indistinguishable femtosecond CARS spectra by tailoring the probe spectrum, and then their selective excitation and suppression can be realized by supplementally manipulating the pump (or Stokes) spectrum with the $\pi $ spectral phase step.

Keywords: coherent anti-Stokes Raman scattering (CARS) selective excitation selective suppression pulse shaping

Received: 29 June 2009
Revised: 03 August 2009
Accepted manuscript online:

PACS:	42.65.Dr	(Stimulated Raman scattering; CARS)
	42.65.Re	(Ultrafast processes; optical pulse generation and pulse compression)

Fund: Project supported by Programme for Changjiang Scholars and Innovative Research Team in University (PCSIRT), Shanghai Leading Academic Discipline Project (Grant No.~B408), National Key Project for Basic Research of China (Grant Nos.~2006CB806006 and 2006CB

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Zhang Shi-An(张诗按), Zhang Hui(张晖), Wang Zu-Geng(王祖赓), and Sun Zhen-Rong(孙真荣) Selective excitation and suppression of coherent anti-Stokes Raman scattering by shaping femtosecond pulses 2010 Chin. Phys. B 19 043201

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Selective excitation and suppression of coherent anti-Stokes Raman scattering by shaping femtosecond pulses

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