Optical second-harmonic generation from
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F. Geiger; G. Marowsky
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Article
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1996
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Elsevier Science
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English
⚖ 360 KB
We have studied surface second-harmonic generation from thin layers of several oligothiophenes deposited by vacuum sublimation on fused silica substrates, Although these oligothiophenes have a symmetric "rr-electron system, they show a second-harmonic response which is strongly dependent on the conj