[OPTICAL REVIEW Vol. 6, No. 2 (1999) 149-151]

Sub-10-fs Ti:sapphire Kerr-lens Mode Locked Oscillator

Eugen SLOBODCHIKOV,1 Shuji SAKABE,2,3,* Tomoyuki KUGE,2 Sakae KAWATO,3 Masaki HASHIDA1 and Yasukazu IZAWA3

1Institute for Laser Technology, 2-6, Yamadaoka, Suita, Osaka, 565-0871 Japan, 2Department of Electromagnetic Energy Engineering, Osaka University Graduate School, 2-1, Yamadaoka, Suita, Osaka, 565-0871 Japan, 3Institute of Laser Engineering, Osaka University, 2-6, Yamadaoka, Suita, Osaka, 565-0871 Japan

(Received September 14, 1998; Accepted December 12, 1998)

Assembly of a sub-10-fs Ti:sapphire oscillator using only optical components commercially available in catalogues is reported. It was demonstrated that stable sub-10-fs optical pulses near 800 nm can be generated from a Kerr-lens mode locked oscillator equipped with a pair of prisms to compensate group delay dispersions (GDD) in the cavity. For the GDD control in a 10fs-pulse oscillator it was concluded that chirped mirrors are not always necessary, and a pair of prisms is still available.

Key words : 10-fs, Ti:sapphire laser, Kerr-lens mode locked