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Stimulated Rayleigh-Bragg Scattering From a Two-Photon Absorbing CdSe-CdS-ZnS Quantum-Rods System: Optical Power Limiting and Phase-Conjugation
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2008 (English)In: IEEE Journal of Quantum Electronics, ISSN 0018-9197, E-ISSN 1558-1713, Vol. 44, no 9-10, 894-901 p.Article in journal (Refereed) Published
Abstract [en]

This work reports the properties of stimulated Rayleigh-Bragg scattering (SRBS) from a two-photon absorbing CdSe-Cds-ZnS quantum-rods (QRs) solution in chloroform, excited by 1064-nm and similar to 13-ns laser pulses. The two-photon absorbing capability of the scattering medium, as well as the pump threshold, spectral structure, and pulse waveforms of the backward stimulated scattering were measured. Comparing to a pure solvent or an organic dye-solution, the semiconductor QR system has many advantages such as the lower pump threshold, higher energy transfer efficiency, and better photo-physical and photo-chemical stability. The measured output/input characteristic curve shows that the backward SRBS can enhance the optical power limiting performance that is based on two-photon absorption, backward stimulated scattering, and other nonlinear absorption mechanisms. In addition, the backward SRBS beam from our sample medium exhibits a fairly good optical phase-conjugation capability, so that the distortion influence from an inserted aberrator can be automatically removed.

Place, publisher, year, edition, pages
2008. Vol. 44, no 9-10, 894-901 p.
Keyword [en]
Optical phase conjugation, power limiting, quantum rods (QRs), stimulated Rayleigh-Bragg scattering, two-photon absorption, nonlinear absorption, carrier dynamics, dots, excitation, cdte
Identifiers
URN: urn:nbn:se:kth:diva-17920DOI: 10.1109/jqe.2008.924432ISI: 000260464400013Scopus ID: 2-s2.0-65349110486OAI: oai:DiVA.org:kth-17920DiVA: diva2:335965
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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He, SailingÅgren, Hans

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