Four-photon absorption in the single-crystal polymer bis(paratoluene) sulfonate
Abbreviated Journal Title
P-TOLUENE SULFONATE; OPTICAL NONLINEARITIES; CONJUGATED POLYMER; POLYDIACETYLENE; SPECTROSCOPY; INDEX; Optics
Strong four-photon absorption corresponding to Im[chi((tau))((-)omega; w, (-)omega, omega, (-)omega, omega, (-)omega, omega)] has been measured for the first time to the authors' knowledge with 100-fs pulses at 1600 nm in the single-crystal polymer poly[bis(p-toluene sulfonate)] of 2,4-hexadiyne-1,6-diol. The transition involved is from the even-symmetry ground state into the vibronic subband of the dominant, even-symmetry, excited two-photon state at an energy of 2.7 eV. (C) 1998 Optical Society of America.
"Four-photon absorption in the single-crystal polymer bis(paratoluene) sulfonate" (1998). Faculty Bibliography 1990s. 2451.