Abstract
Issues on amplification of ultrashort pulses in Ti:sapphire lasers, with an energy of more than 10 mJ in sub-20-fs regime, are narrowing of the spectrum and dispersion control for the pulses. Spectral broadening technique1 enables us to generate about 20-fs pulses with an energy more than 10 mJ at 1-kHz repetition rate,2 however, we have to overcome a limit of spectral bandwidth of the cavity mirrors in the regenerative amplifier for further shortening of the pulse duration.
© 2002 Optical Society of America
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