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Resonant propagation of femtosecond laser pulse in DBASVP molecule: one-dimensional asymmetric organic molecule
KTH, School of Biotechnology (BIO), Theoretical Chemistry.ORCID iD: 0000-0003-0007-0394
2005 (English)In: Chinese Physics (Beijing), ISSN 1009-1963, E-ISSN 1741-4199, Vol. 14, no 10, 2014-2018 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2005. Vol. 14, no 10, 2014-2018 p.
Keyword [en]
Maxwell-Bloch equations, Rabi flopping, two-photon absorption, optical pulses, 2-level medium, initiator
Identifiers
URN: urn:nbn:se:kth:diva-15085ISI: 000232383600016Scopus ID: 2-s2.0-25644456752OAI: oai:DiVA.org:kth-15085DiVA: diva2:333126
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Luo, Yi

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