Abstract

The dual-beam (pump, probe) time-resolved Z-scan technique is used to study the thermal changes in refractive index that are due to one- and two-photon absorption in organic solvents. The time resolution enabled us to select a pure thermal signal and to measure absolute variations as small as 10⁻⁶ that were due to heating. Gaussian approximation was used for the pump and probe beams to fit experimental and calculated model dependencies.

© 1994 Optical Society of America

Two-photon-absorption-induced accumulated thermal effect on femtosecond Z-scan experiments studied with time-resolved thermal-lens spectrometry and its simulation

Kenji Kamada, Kinu Matsunaga, Akihiro Yoshino, and Koji Ohta
J. Opt. Soc. Am. B 20(3) 529-537 (2003)

Time-resolved Z-scan measurements of optical nonlinearities

J. Wang, M. Sheik-Bahae, A. A. Said, D. J. Hagan, and E. W. Van Stryland
J. Opt. Soc. Am. B 11(6) 1009-1017 (1994)

Characterization of dynamic optical nonlinearities by continuous time-resolved Z-scan

David O. Caplan, Gregory S. Kanter, and Prem Kumar
Opt. Lett. 21(17) 1342-1344 (1996)

Measurement of nondegenerate nonlinearities using a two-color Z scan

M. Sheik-Bahae, J. Wang, R. DeSalvo, D. J. Hagan, and E. W. Van Stryland
Opt. Lett. 17(4) 258-260 (1992)

Direct observation of the transient thermal-lensing effect using the phase-object Z-scan technique

Junyi Yang and Yinglin Song
Opt. Lett. 34(2) 157-159 (2009)