作者: O. Lammel , A. Penzkofer
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摘要: The two-photon absorption induced fluorescence in a methanolic rhodamine 6G solution is used to measure the pulse duration of cw femtosecond Kerr–lens mode-locked Ti:sapphire laser by Michelson-interferometer-type autocorrelator arrangement. Interference-free autocorrelation traces are obtained correlating perpendicular polarized pulses. polarization parameter determined contrast ratio measurement. time resolution limits discussed.