Z-Scan measurements of two-photon absorption for ultrashort laser radiation A. Ajami a, M.S. Rafique a, N. Pucher b, S. Bashir a, W. Husinsky *a, R. Liska b, R …
Measurements. Two-photon absorption can be measured by several techniques. Some of them are two-photon excited fluorescence (TPEF), z-scan, self-diffraction or nonlinear transmission (NLT ). Pulsed lasers are most often used because TPA is a third-order nonlinear optical process, and therefore is most efficient at very high intensities.
The z-scan method was generalized to allow the measurement of very low values of ? 2 at moderate intensities. For purpose of demonstration, the generalized method was used to measure the ? 2 of Rhodamine 6G dissolved in methanol at 806 nm. The results confirm that the generalized z-scan is a simple method to determine the two-photon cross section of molecules.
Two-photon absorption – Wikipedia, RP Photonics Encyclopedia – z-scan measurements , Kerr …
Two-Photon Absorption – an overview | ScienceDirect Topics, RP Photonics Encyclopedia – z-scan measurements , Kerr …
