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Opt Lett. 2007 Nov 15;32(22):3293-5.

Supercontinuum generated in calcite with chirped femtosecond pulses.

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  • 1Institute for Ultrafast Spectroscopy and Lasers, Department of Physics, City College and Graduate Center of the City University of New York, New York, New York 10031, USA.


Effects of pulse chirping on the dynamic of supercontinuum (SC) spectra generated by femtosecond laser pulses at 800 nm in calcite are studied. When an 80 fs laser pulse is stretched to more then 130 fs by introducing positive or negative chirp, a strong and sharp spectral peak in the blue wing of the SC spectra is generated. The wavelength of this spectral peak is tuned by introducing chirp and pulse energy.

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