Intuitive model to include the effect of free‐carrier absorption in calculating the two‐photon absorption coefficient

Laughton, F. R., Marsh, J. H. and Roberts, J. S. (1992) Intuitive model to include the effect of free‐carrier absorption in calculating the two‐photon absorption coefficient. Applied Physics Letters, 60(2), pp. 166-168. (doi: 10.1063/1.106980)

Abstract

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.

• Item Type: Articles
• Additional Information: This research was supported by the Science and Engineering Research Council (Grant Nos. GR/D 99607 and GR/F 65248).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Marsh, Professor John
• Authors: Laughton, F. R., Marsh, J. H., and Roberts, J. S.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Journal Name: Applied Physics Letters
• Publisher: AIP Publishing
• ISSN: 0003-6951
• ISSN (Online): 1077-3118