ISSN:
1077-3118
Source:
AIP Digital Archive
Topics:
Physics
Notes:
We report a simple model to include the effect of free-carrier absorption (FCA) in calculating the two-photon absorption (TPA) coefficient, β, and demonstrate its use in evaluating β from nonlinear transmission experiments. When only linear absorption and TPA are considered and the experimental analysis is carried out in the usual way, β is calculated to be 2.0 and 2.7×10−10 m W−1 for TM and TE polarizations, respectively. Including the effect of FCA in the waveguide, the model predicts β to be 1.5 and 2.0×10−10 m W−1 for TM and TE polarizations, respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.106980