Chirp characteristics of modified spectrum autointerferometric correlation for femtosecond pulse

CHEN Bi-fang; LIU Tian-fu

A simple method which can measure the chirp of femtosecond laser pulses was described.Modified spectrum autointerferometric correlation(MOSAIC) uses spectral filtering of the interferometric autocorrelation(IAC) to render a waveform that is highly sensitive to chirp.The Gaussian intensity of femto-second chirped pulses was numerically calculated.The peak of the MOSAIC minima envelope as a function of the normalized mean chirp for different orders of chirp and MOSAIC peak number corresponding to the first-and second-order chirps were obtained.Low chirp of femto-second laser pulses can be determined accurately with the MOSAIC.

1. School of Mechanical and Electrical Engineering, Jiaxing University, Jiaxing 314001, China;

2. Department of Information Engineering, China Jiliang University, Hangzhou 310034, China

Received Date: 2006-09-05

Accepted Date: 2006-12-11

Available Online: 2007-12-25

Abstract: A simple method which can measure the chirp of femtosecond laser pulses was described.Modified spectrum autointerferometric correlation(MOSAIC) uses spectral filtering of the interferometric autocorrelation(IAC) to render a waveform that is highly sensitive to chirp.The Gaussian intensity of femto-second chirped pulses was numerically calculated.The peak of the MOSAIC minima envelope as a function of the normalized mean chirp for different orders of chirp and MOSAIC peak number corresponding to the first-and second-order chirps were obtained.Low chirp of femto-second laser pulses can be determined accurately with the MOSAIC.

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Reference (9)

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Chirp characteristics of modified spectrum autointerferometric correlation for femtosecond pulse

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References

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