Mechanism of polarization-induced single-photon fluorescence enhancement.

نویسندگان

  • Shian Zhang
  • Hui Zhang
  • Chenhui Lu
  • Tianqing Jia
  • Zugeng Wang
  • Zhenrong Sun
چکیده

The single-photon fluorescence (SPF) of IR125 can be enhanced when the laser polarization changes from linear through elliptical to circular [A. Nag and D. Goswami, J. Chem. Phys. 132, 154508 (2010)]. In this paper, we further explain and discuss the physical control mechanism. Our theoretical and experimental results demonstrate that the SPF enhancement can be attributed to the nonresonant two-photon absorption of a higher excited state. We conclude that the SPF intensity involving the nonresonant multiphoton absorption of the higher excited state can be controlled by varying the laser polarization.

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عنوان ژورنال:
  • The Journal of chemical physics

دوره 133 21  شماره 

صفحات  -

تاریخ انتشار 2010