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|Title:||Concentration-dependent two-photon absorption and subsequent excited-state absorption in 4-methoxy-2-nitroaniline||Authors:||Gu, B.
|Issue Date:||2009||Citation:||Gu, B., Ji, W., Huang, X.-Q., Patil, P.S., Dharmaprakash, S.M. (2009). Concentration-dependent two-photon absorption and subsequent excited-state absorption in 4-methoxy-2-nitroaniline. Journal of Applied Physics 106 (3) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3190535||Abstract:||By performing both open-aperture Z -scan and transient transmission measurements with femtosecond laser pulses in the near infrared region, the concentration dependence of two-photon absorption (2PA) and subsequent excited-state absorption (ESA) are investigated in acetone solution of 4-methoxy-2-nitroaniline (4M2N). Owing to the high tendency of forming aggregation molecules in solution, a considerable dependence of the nonlinear optical response on the concentration is observable at a 4M2N concentration of 10-3 M and beyond. It is found that both effective 2PA and ESA cross sections decrease with increasing concentration, while the effective lifetime of 2PA-induced excited states lengthens. © 2009 American Institute of Physics.||Source Title:||Journal of Applied Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/96057||ISSN:||00218979||DOI:||10.1063/1.3190535|
|Appears in Collections:||Staff Publications|
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