Please use this identifier to cite or link to this item:
|Title:||Theoretical and experimental studies of three-photon-induced excited-state absorption|
|Authors:||Gu, B. |
|Source:||Gu, B., Ji, W., Yang, H.-Z., Wang, H.-T. (2010). Theoretical and experimental studies of three-photon-induced excited-state absorption. Applied Physics Letters 96 (8) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3327340|
|Abstract:||We theoretically and experimentally study excited-state absorption (ESA) induced by three-photon absorption (3PA) under the excitation of ultrafast laser pulses. Based on five-level rate-equation theory, we obtain an analytical expression for the effective four-photon absorption coefficient that originates from both singlet-singlet (S-S) and triplet-triplet (T-T) ESA. We validate that the T-T ESA could be justifiably neglected in the femtosecond regime. Experimentally, we verify it in acetone solution of 2,4,5-trimethoxychalcone by performing femtosecond Z-scan measurements; at low excitation intensity, only 3PA is determined; and under the excitation of high intensity, however, we observe the concurrence of 3PA and 3PA-induced S-S ESA processes. © 2010 American Institute of Physics.|
|Source Title:||Applied Physics Letters|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Mar 7, 2018
WEB OF SCIENCETM
checked on Jan 31, 2018
checked on Mar 11, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.