Carrier--envelope phase effects for a dipolar molecule interacting with ultrashort laser pulse |
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Authors: | Zhao Ke Li Hong-Yu Liu Ji-Cai and Wang Chuan-Kui |
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Institution: | College of Physics and Electronics, Shandong Normal University, Jinan 250014, China |
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Abstract: | In this paper the phase-dependent features of ultrashort laser pulse resonant
propagation in a two-level dipolar molecule are demonstrated by solving full
Maxwell--Bloch equations. The electronic properties of dipolar molecule
4-trans-p-(N, N-Di-n-butylamino)-p -stilbenylvinyl] pyridine (DBASVP) molecule,
one-dimensional asymmetric organic molecule, is calculated by density functional
theory at \textit{ab initio} level. The numerical results show that the carrier
propagation and the spectrum evolution of the pulse are sensitive to its initial
phase and the phase sensitivity is more obvious for larger area pulse. The
phase-dependent feature is more evident in dipolar molecule because the permanent
dipole moment makes the nonlinear effects stronger. |
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Keywords: | carrier--envelope phase self-phase
modulation Maxwell--Bloch equations |
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