Multiphoton absorption in organic dye solutions
1997
Two-photon absorption in organic dyes can be enhanced by orders of magnitude in particular situations. An original
model accounting for an enhanced nonlinear absorption in concentrated interacting dye solutions is presented. The
related nonlinear absorption which is induced in the transparency region of the dye solutions has an intensity dependent
avalanche behavior. It may reach levels as high as using conventional excited state absorption. This open new
possibilities for the practical use oftwo-photon absorption.
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