Zinth, Wolfgang and Laubereau, Alfred and Kaiser, Wolfgang
Generation of chirp-free picosecond pulses.
In: optics communications, No. 22: pp. 161-164
The frequency spectrum of moderately chirped laser pulses depends upon the portion of the beam which is accepted by the spectrometer. Observation of the development of the chirp in a mode-locked pulse train allows to determine the small incipient chirp of early pulses. A product, bandwidth times pulse duration, of 0.47 ± 0.03 is consistently observed for single pulses switched from a passively mode-locked Nd-glass system.