A detailed schematic of the femtosecond laser facility is shown in Figure 1. A femtosecond mode-locked seed beam of 14.5 nm bandwidth, pulse energies in the nanojoule range and repetition rate of 80 MHz is emitted from a Ti:sapphire oscillator pumped by a diode laser. A pulsed Nd:YLF operating at repetition rate of 1 kHz pumps the seed beam through a regenerative amplifier. Using the chirped pulse amplification technique, ultra-short pulses are generated with a FWHM pulse width of about 83 fs, 800 nm wavelength and 1 mJ maximum pulse energy.
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