Femtosecond dephasing in a polydiacetylene film observed by degenerate four-wave mixing with an incoherent nanosecond laser

Femtosecond dephasing in a polydiacetyle

Femtosecond dephasing in a polydiacetylene film measured by degenerate four-wave mixing with an incoherent nanosecond laser

✍ Toshiaki Hattori; Takayoshi Kobayashi 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 477 KB

Dephasing times m a polydiacetylene (poly-3BCMU) film were resolved for the first time at two wavelengths by degenerate four-wave mixing using incoherent light. The dephasing times, 30 fs at 648 nm and 130 fs at 582 nm, correspond to excitons in chains of the polymer with different conjugation lengt