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Self-sustained puls...
Self-sustained pulsation of amplified spontaneous emission of molecules in solution
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- Polyutov, Sergey (författare)
- KTH,Teoretisk kemi
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- Kimberg, Victor (författare)
- KTH,Teoretisk kemi
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- Baev, A. (författare)
- Institute for Lasers, Photonics and Biophotonics, State University of New York at Buffalo
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- Gel'mukhanov, Faris (författare)
- KTH,Teoretisk kemi
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- Ågren, Hans (författare)
- KTH,Teoretisk kemi
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(creator_code:org_t)
- 2005-12-14
- 2006
- Engelska.
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Ingår i: Journal of Physics B. - : IOP Publishing. - 0953-4075 .- 1361-6455. ; 39:2, s. 215-227
- Relaterad länk:
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http://www.iop.org/E...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Temporal oscillations of amplified spontaneous emission of molecules are studied theoretically. From the proposed theory and numerical simulations, it is found that the self-pulsations originate in an interplay between stimulated emission and saturable absorption. A stability analysis demonstrates the crucial role of the photoabsorption in this process, which can be regulated by a proper choice of buffer molecules. Variations in the saturable absorption mediate a transition from damped oscillations to self-sustained pulsations. The role of propagation effects as well as of the interaction of co- and counter-propagating pulses is also investigated. Numerical simulations, demonstrating the theoretical findings, are performed for a model 3-level system and for an organic chromophore; 4-[N-(2-hydroxyethyl)-N-(methyl)amino phenyl]-4'-(6-hydroxyhexyl sulphonyl) stilbene.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Industriell bioteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Industrial Biotechnology (hsv//eng)
Nyckelord
- Computer simulation; Damping; Light absorption; Mathematical models; Molecular dynamics; Oscillations; Stimulated emission; Buffer molecules; Damped oscillations; Self-sustained pulsation; Stability analysis; Spontaneous emission
- Bioengineering
- Bioteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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