2 March 2001 Time-resolved autocorrelation measurements of transient ultrashort-pulse formation
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The evolution of autocorrelation function observed at the 50 ns resolution for prelase oscillations of actively mode-locked laser evidences that an effective and fast pulse shortening begins when the intracavity radiation intensity attains the saturation level. Pulse duration decrease down to 70 - 75 ps value during 10 cavity roundtrips and further remains unchangeable and independent on the ultrashort pulse energy.
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Valentin A. Zaporozhchenko, Valentin A. Zaporozhchenko, } "Time-resolved autocorrelation measurements of transient ultrashort-pulse formation", Proc. SPIE 4353, Laser Optics 2000: Control of Laser Beam Characteristics and Nonlinear Methods for Wavefront Control, (2 March 2001); doi: 10.1117/12.417734; https://doi.org/10.1117/12.417734

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