| Original Articles |
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High Resolution Mode-Selective Excitation by Adaptive Femtosecond Pulse Shaping |
| LI Xia;ZHANG Hui;ZHANG Xiang-Yun;ZHANG Shi-An;CHEN Guo-Liang;WANG Zu-Geng;SUN Zhen-Rong |
| State Key Laboratory of Precision Spectroscopy, Department of Physics, and Department of Mathematics, East China Normal University, Shanghai 200062 |
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| Cite this article: |
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LI Xia, ZHANG Hui, ZHANG Xiang-Yun et al 2008 Chin. Phys. Lett. 25 528-531 |
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Abstract High resolution mode-selective excitation in the mixture of C6H6 (992cm-1) and C6D6 (945cm-1) is experimentally achieved by adaptive femtosecond pulse shaping based on the genetic algorithm (GA), and second harmonic generation frequency-resolved optical gating (SHG-FROG) is adopted to characterize the original and optimal laser pulses, and its mechanism is experimentally validated by tailoring the frequency components of the pump pulses at the Fourier plane. It is indicated that two-pulse coherent mode-selective excitation of the Raman scattering mainly depends on the effective
frequency components of the pump pulse related to specific molecular vibrational mode. The experimental results have attractive potential applications in the complicated molecular system.
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| Keywords:
42.65.Dr
33.80.-b
82.50.Pt
82.53.Kp
82.53.Uv
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Received: 12 November 2007
Published: 30 January 2008
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| PACS: |
42.65.Dr
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(Stimulated Raman scattering; CARS)
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33.80.-b
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(Photon interactions with molecules)
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82.50.Pt
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(Multiphoton processes)
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82.53.Kp
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(Coherent spectroscopy of atoms and molecules)
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82.53.Uv
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(Femtosecond probes of molecules in liquids)
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