Multiphoton effects in the polydiacetylene poly bis(p-toluene sulfonate) of 2,4-hexadiyne-1,6-diol (PTS)
Abbreviated Journal Title
J. Nonlinear Opt. Phys. Mater.
NONLINEAR REFRACTIVE-INDEX; P-TOLUENE SULFONATE; FILM WAVE-GUIDES; OPTICAL NONLINEARITIES; 4-PHOTON ABSORPTION; CONJUGATED POLYMERS; SPECTROSCOPY; STATE; CRYSTALS; Optics; Physics, Applied
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 alpha(4) = 0.3 cm(5)/GW(3) obtained at 1600 nm. From the known one and two-photon absorption spcctra, 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 & Materials
Article; Proceedings Paper
"Multiphoton effects in the polydiacetylene poly bis(p-toluene sulfonate) of 2,4-hexadiyne-1,6-diol (PTS)" (2000). Faculty Bibliography 2000s. 2872.