Chin. Phys. Lett.  2008, Vol. 25 Issue (6): 2062-2065    DOI:
Articles |
Experimental Investigation on Selective Excitation of Two-Pulse Coherent Anti-Stokes Raman Scattering
LI Xia;ZHANG Hui;ZHANG Xiang-Yun;ZHANG Shi-An;WANG Zu-Geng,
SUN Zhen-Rong
State Key Laboratory of Precision Spectroscopy, and Department of Physics, and Department of Mathematics, East China Normal University, Shanghai 200062
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LI Xia, ZHANG Hui, ZHANG Xiang-Yun et al  2008 Chin. Phys. Lett. 25 2062-2065
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Abstract Selective excitation of coherent anti-Stokes Raman scattering from the benzene solution is achieved by adaptive pulse shaping based on genetic algorithm, and second harmonic generation frequency-resolved optical gating (SHG-FROG) technique is adopted to characterize the original and optimal laser pulses. The mechanism for two-pulse coherent mode-selective excitation of Raman scattering is experimentally investigated by modulating the pump pulse in the frequency domain, and it is indicated that two-pulse coherent mode-selective excitation of Raman scattering mainly depends on the effective frequency components of the pump pulse related to specific vibrational mode. The experimental results suggest that two-pulse CARS has good signal-to-background ratio and high sensitivity, and it has attractive potential applications in the complicated molecular system.
Keywords: 42.65.Dr      33.80.-b      82.50.Pt      82.53.KP      82.63.Uv     
Received: 23 September 2007      Published: 31 May 2008
PACS:  42.65.Dr (Stimulated Raman scattering; CARS)  
  33.80.-b (Photon interactions with molecules)  
  82.50.Pt (Multiphoton processes)  
  82.53.Kp (Coherent spectroscopy of atoms and molecules)  
  82.63.Uv  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I6/02062
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Articles by authors
LI Xia
ZHANG Hui
ZHANG Xiang-Yun
ZHANG Shi-An
WANG Zu-Geng
SUN Zhen-Rong
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