TY  - JOUR
  - Couris*, S.,Koudoumas, E.,Ruth, A. A.,Leach, S.
  - 1995
  - October
  - Journal of Physics B-Atomic Molecular and Optical Physics
  - Concentration and Wavelength Dependence of the Effective 3rd-Order Susceptibility and Optical Limiting of C-60 in Toluene Solution
  - Validated
  - ()
  - 28
  - 20
  - 4537
  - 4554
  - The optical limiting action of C-60 in toluene solution is mainly due to reverse saturable absorption (RSA). It is shown that the formalism describing nonlinear optical response due to instantaneous two-photon absorption can be used in the case of sequential two-photon absorption, yielding effective values of the relevant parameters of optical nonlinearity due to RSA. The effective two-photon absorption parameter beta(eff) and the effective nonlinear refractive index parameter Y'(eff), which are related respectively to the imaginary and real parts of the effective third-order susceptibility chi(eff)((3)), were measured by the z-scan technique as a function of fullerene concentration and of incident laser intensity and wavelength over the 420-640 nm region. The concentration dependence of these parameters indicates that the solution is optically thin as far as the ground state of C-60 is concerned, whereas the wavelength dependence confirms the applicability of the formalism used in the sequential two-photon absorption model. Comparisons are made with other z-scan results on C-60.The optical limiting action of C-60 in toluene solution is mainly due to reverse saturable absorption (RSA). It is shown that the formalism describing nonlinear optical response due to instantaneous two-photon absorption can be used in the case of sequential two-photon absorption, yielding effective values of the relevant parameters of optical nonlinearity due to RSA. The effective two-photon absorption parameter beta(eff) and the effective nonlinear refractive index parameter Y'(eff), which are related respectively to the imaginary and real parts of the effective third-order susceptibility chi(eff)((3)), were measured by the z-scan technique as a function of fullerene concentration and of incident laser intensity and wavelength over the 420-640 nm region. The concentration dependence of these parameters indicates that the solution is optically thin as far as the ground state of C-60 is concerned, whereas the wavelength dependence confirms the applicability of the formalism used in the sequential two-photon absorption model. Comparisons are made with other z-scan results on C-60.
  - 0953-40750953-4075
  - ://A1995TC05600015 ://A1995TC05600015
DA  - 1995/10
ER  - 

@article{V67924341,
   = {Couris*,  S. and Koudoumas,  E. and Ruth,  A. A. and Leach,  S. },
   = {1995},
   = {October},
   = {Journal of Physics B-Atomic Molecular and Optical Physics},
   = {Concentration and Wavelength Dependence of the Effective 3rd-Order Susceptibility and Optical Limiting of C-60 in Toluene Solution},
   = {Validated},
   = {()},
   = {28},
   = {20},
  pages = {4537--4554},
   = {{The optical limiting action of C-60 in toluene solution is mainly due to reverse saturable absorption (RSA). It is shown that the formalism describing nonlinear optical response due to instantaneous two-photon absorption can be used in the case of sequential two-photon absorption, yielding effective values of the relevant parameters of optical nonlinearity due to RSA. The effective two-photon absorption parameter beta(eff) and the effective nonlinear refractive index parameter Y'(eff), which are related respectively to the imaginary and real parts of the effective third-order susceptibility chi(eff)((3)), were measured by the z-scan technique as a function of fullerene concentration and of incident laser intensity and wavelength over the 420-640 nm region. The concentration dependence of these parameters indicates that the solution is optically thin as far as the ground state of C-60 is concerned, whereas the wavelength dependence confirms the applicability of the formalism used in the sequential two-photon absorption model. Comparisons are made with other z-scan results on C-60.The optical limiting action of C-60 in toluene solution is mainly due to reverse saturable absorption (RSA). It is shown that the formalism describing nonlinear optical response due to instantaneous two-photon absorption can be used in the case of sequential two-photon absorption, yielding effective values of the relevant parameters of optical nonlinearity due to RSA. The effective two-photon absorption parameter beta(eff) and the effective nonlinear refractive index parameter Y'(eff), which are related respectively to the imaginary and real parts of the effective third-order susceptibility chi(eff)((3)), were measured by the z-scan technique as a function of fullerene concentration and of incident laser intensity and wavelength over the 420-640 nm region. The concentration dependence of these parameters indicates that the solution is optically thin as far as the ground state of C-60 is concerned, whereas the wavelength dependence confirms the applicability of the formalism used in the sequential two-photon absorption model. Comparisons are made with other z-scan results on C-60.}},
  issn = {0953-40750953-4075},
   = {://A1995TC05600015 ://A1995TC05600015},
  source = {IRIS}
}