An autocorrelation measurement of femtosecond laser pulse duration using the Kerr-lens mechanism is demonstrated. This technique can also be used as a sensitive and absolutely calibratable method for measuring ultrafast optical nonlinearities. A method that uses an electronic spectral-filtering scheme is proposed for determining the frequency chirp of pulses by interferometric autocorrelation.
© 1997 Optical Society of America
M. Sheik-Bahae, "Femtosecond Kerr-lens autocorrelation," Opt. Lett. 22, 399-401 (1997)