Multiphoton Effects In The Polydiacetylene Poly Bis(P-Toluene Sulfonate) Of 2,4-Hexadiyne-1,6-Diol (Pts)
Multiphoton absorption was investigated in single crystals of the polymer poly bis(p-toluene sulfonate) of 2,4-hexadiyne-1,6-diol (PTS). Using modified growth and polymerization techniques, high optical quality crystals were grown and their linear absorption spectrum measured. Very large four-photon absorption was measured using Z-scan with a value of α4 = 0.3 cm5/GW3 obtained at 1600 nm. From the known one and two-photon absorption spectra, the three- and four-photon spectra are predicted to overlap. This leads to three-photon enhanced, four-photon absorption which is interpreted as the mechanism responsible for such large four-photon absorption.
Journal of Nonlinear Optical Physics and Materials
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Yoshino, Fumiyo; Polyakov, Sergey; and Friedrich, Lars, "Multiphoton Effects In The Polydiacetylene Poly Bis(P-Toluene Sulfonate) Of 2,4-Hexadiyne-1,6-Diol (Pts)" (2000). Scopus Export 2000s. 1094.