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Chinese Physics, 2005, Vol. 14(10): 2014-2018    DOI: 10.1088/1009-1963/14/10/016
CLASSICAL AREAS OF PHENOMENOLOGY Prev   Next  

Resonant propagation of femtosecond laser pulse in DBASVP molecule:one-dimensional asymmetric organic molecule

Zhao Ke (赵珂)a, Liu Ji-Cai (刘纪彩)a, Wang Chuan-Kui (王传奎)ab, Luo Yi (罗毅)b
a College of Physics and Electronics, Shandong Normal University, Jinan 250014, China; b Theoretical Chemistry, Royal Institute of Technology, AlbaNova, S-10691 Stockholm, Sweden
Abstract  We have investigated the resonant propagation of femtosecond laser pulse in 4-trans-[p-(N, N-Di-n-butylamino)-p-stilbenyl vinyl] pyridine medium with permanent dipole moments. The electronic structures and parameters for the compound have been calculated by using density functional theory. In the optical regime, there is one charge-transfer state, and the molecule can thus be simplified as a two-level system. Both the one- and two-photon transitions occur between the ground and charge-transfer states. The numerical results show that the permanent dipole moments have an obvious effect on the propagation of the ultrashort pulse laser. The ideal self-induced transparency disappears for 2$\pi$ pulse, and second harmonic spectral components occur significantly due to the two-photon absorption process. For the 6$\pi$ pulse, continuum frequency generation is produced and a shorter duration pulse in time domain with 465 as is obtained.
Keywords:  Maxwell--Bloch equations      Rabi flopping      two-photon absorption  
Received:  22 April 2005      Revised:  14 July 2005      Accepted manuscript online: 
PACS:  33.80.-b (Photon interactions with molecules)  
  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
  33.15.Kr (Electric and magnetic moments (and derivatives), polarizability, and magnetic susceptibility)  
  31.15.E-  
Fund: Project supported by the Shandong Natural Science Foundation (Grant No Y2004A08), the University Doctoral Subject Special Science and Technology Foundation (Grant No 20040445001)and The Key Laboratory for High Intensity Optics of Shanghai Institute of Opt

Cite this article: 

Zhao Ke (赵珂), Liu Ji-Cai (刘纪彩), Wang Chuan-Kui (王传奎), Luo Yi (罗毅) Resonant propagation of femtosecond laser pulse in DBASVP molecule:one-dimensional asymmetric organic molecule 2005 Chinese Physics 14 2014

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