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Measuring the frequency chirp of white-light continuum in a pump-probe system



  1. National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donat Str, Cluj-Napoca, 400084, Romania


We present here a method which can be used for measuring the instrument response function and the frequency chirp of the white-light continuum (WLC) pulses used in femtosecond time-resolved absorption spectroscopy. The method is based on inducing the optical Kerr effect in different solvents and in the empty quartz cuvette. Additional signal artifacts are observed and identified as the cross phase modulation effect, as well as stimulated Raman. The instrument response function and the dispersion data of the WLC pulse are further used for the study of the electron dynamics in colloidal Au nanoparticles..


Time-resolved absorption spectroscopy, Instrument response function, White light continuum, Colloidal Au nanoparticles.

Submitted at: Sept. 22, 2016
Accepted at: June 7, 2017


A. FALAMAS, N. TOSA, V. TOSA, Measuring the frequency chirp of white-light continuum in a pump-probe system, Journal of Optoelectronics and Advanced Materials Vol. 19, Iss. 5-6, pp. 291-297 (2017)