Studies on the fine structure of interferometric autocorrelation of ultrashort pulse with femtosecond accuracy

Zhong Ouyang; Wen-Ji Peng; Wei-Liang Li; Zhi-Ren Qiu; Zhenxin Yu

doi:10.1117/12.175850

16 May 1994 Studies on the fine structure of interferometric autocorrelation of ultrashort pulse with femtosecond accuracy

Zhong Ouyang, Wen-Ji Peng, Wei-Liang Li, Zhi-Ren Qiu, Zhenxin Yu

Author Affiliations +

Proceedings Volume 2116, Generation, Amplification, and Measurement of Ultrashort Laser Pulses; (1994) https://doi.org/10.1117/12.175850
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

The interference fringes of the interferometric second order autocorrelation curves with a peak-to-background ratio of 8:1 are measured and analyzed. The femtosecond pulses are from a colliding pulse mode locked dye laser (CPM). The autocorrelator and datum acquisition are all controlled by an IBM PC/XT computer with the software and hardware specifically designed in this work. The experimental results demonstrate that the oscillatory frequency of the fine structure within the 8:1 curves is dominantly determined by the oscillatory frequency of the interferometric autocorrelation of the fundamental wave. The curves are well fitted with the theoretical calculation for the interferometric autocorrelation trace for a hyperbolic-secant- squared pulse. The intensity autocorrelation curves are also measured. It is found that the optical delay line must be moved above a certain high speed, otherwise it is possible to get a wrong intensity autocorrelation curve and the measurement result will include some interferometric information.

Citation Download Citation

Zhong Ouyang, Wen-Ji Peng, Wei-Liang Li, Zhi-Ren Qiu, and Zhenxin Yu "Studies on the fine structure of interferometric autocorrelation of ultrashort pulse with femtosecond accuracy", Proc. SPIE 2116, Generation, Amplification, and Measurement of Ultrashort Laser Pulses, (16 May 1994); https://doi.org/10.1117/12.175850

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