4-PHOTON ABSORPTION IN THE SINGLE-CRYSTAL POLYMER BIS(PARATOLUENE) SULFONATE

Authors
SHIM H LIU MG CHANG HB STEGEMAN GI
Citation
H. Shim et al., 4-PHOTON ABSORPTION IN THE SINGLE-CRYSTAL POLYMER BIS(PARATOLUENE) SULFONATE, Optics letters, 23(6), 1998, pp. 430-432
Citations number
16
Categorie Soggetti
Optics
Journal title
Optics letters → ACNP
ISSN journal
01469592
Volume
23
Issue
6
Year of publication
1998
Pages
430 - 432
Database
ISI
SICI code
0146-9592(1998)23:6<430:4AITSP>2.0.ZU;2-I
Abstract
Strong four-photon absorption corresponding to Im[chi((tau))((-)omega; w, (-)omega, omega, (-)omega, omega, (-)omega, omega)] has been measu red 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-sy mmetry ground state into the vibronic subband of the dominant, even-sy mmetry, excited two-photon state at an energy of 2.7 eV. (C) 1998 Opti cal Society of America.