Publication record
Stimulated Rayleigh-Bragg Scattering From a Two-Photon Absorbing CdSe/Cds/ZnS Quantum-Rods System: Optical Limiting and Phase-Conjugation
| Title | Stimulated Rayleigh-Bragg Scattering From a Two-Photon Absorbing CdSe/Cds/ZnS Quantum-Rods System: Optical Limiting and Phase-Conjugation |
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| Authors | G.S. He, K.T. Yong, H.Y Qin, Q. Zheng, P.N. Prasad, S. He and H. Ågren |
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| Citation | IEEE J. of Quantum Electronics, 44, 894 |
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| Doi: | |
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| Year | 2008 |
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| Field | Molecular electronics and photonics |
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| Section | NLO in liquids, polymers and fullerenes |
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| Sub-section | General liquids theory |
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| Keywords | |
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| Abstract | his work reports the properties of stimulated Rayleigh-Bragg scattering (SRBS) from a two-photon absorbing CdSe/CdS/ZnS quantum-dots (QRs) solution in chloroform, excited by 1064-nm and 13-ns laser pulses. The two-photon absorbing capability of the scattering medium, and the pump threshold, spectral structure, and pulse waveforms of the backward stimulated scattering were measured. The lower pump threshold, higher energy transfer efficiency and better photo-physical/chemical stability are the advantages of using semiconductor quantum rod system compared to the pure solvent or organic dye-solutions. The measured output/input characteristic curve shows that the backward SRBS is a favorable mechanism to enhance the two-photon absorption based optical power limiting performance. In addition, the experimental results also show that 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. |
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