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|Title:||Two-photon-induced excited-state absorption: Theory and experiment||Authors:||Gu, B.
|Issue Date:||2008||Citation:||Gu, B., Ji, W., Patil, P.S., Dharmaprakash, S.M., Wang, H.-T. (2008). Two-photon-induced excited-state absorption: Theory and experiment. Applied Physics Letters 92 (9) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2841713||Abstract:||We develop an open-aperture (OA) Z scan and nonlinear transmission theory of two-photon-induced excited-state absorption, under the excitation of spatial Gaussian laser pulses with temporal Gaussian and hyperbolic secant profiles. The found analytic expressions allow us to straightforwardly fit the OA Z -scan trace and the nonlinear transmission curve, for convenient extraction of the nonlinear absorption coefficients. As a test, the two-photon-induced excited-state absorption in a chalcone derivative of 3,4-dimethoxy- 4′ -fluorochalcone is explored by performing femtosecond Z -scan measurement and is analyzed by our theory. © 2008 American Institute of Physics.||Source Title:||Applied Physics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/98487||ISSN:||00036951||DOI:||10.1063/1.2841713|
|Appears in Collections:||Staff Publications|
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