Exceptionally Strong Multiphoton-Excited Blue Photoluminescence and Lasing from Ladder-Type Oligo(<i>p</i>-phenylene)s
作者:Hai Hua Fan、Lei Guo、King Fai Li、Man Shing Wong、Kok Wai Cheah
DOI:10.1021/ja302085q
日期:2012.5.2
enhanced and efficient multiphoton (from two- to five-photon) upconverted blue photoluminescence with which the record-high intrinsic three-photon absorption cross-section of 4.56 × 10(-76) cm(6) s(2) in the femtosecond regime has been obtained. Exceptionally efficient two- to five-photon-excited lasing in the blue region has also been demonstrated in which the highest two-photon-excited lasing efficiency