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- W2079383882 abstract "Picosecond pump-probe spectroscopy has been used to investigate excitons in polydiacetylene PTS. At temperatures below 195 K, neighboring chains are inequivalent due to a structural phase transition and their excitons differ in energy by 50 meV. Pumping either band forms excitons that decay in a few picoseconds with no significant interchain transport on the timescale of the exciton lifetime. We attribute a novel long-lived modulation of the low temperature exciton absorption, and the corresponding shifts in oscillator strength, to changes in the orientation of the PTS side-groups." @default.
- W2079383882 created "2016-06-24" @default.
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- W2079383882 date "1990-01-15" @default.
- W2079383882 modified "2023-10-17" @default.
- W2079383882 title "The Low Temperature Picosecond Spectroscopy Of Polydiacetylene PTS In The Small Signal Limit" @default.
- W2079383882 doi "https://doi.org/10.1117/12.962103" @default.
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