Experimental verification of soliton mode locking using only a slow saturable absorber

Autor: Jung, I. D., Kärtner, F. X., Brovelli, L. R., Kamp, M., Keller, U.
Zdroj: Optics Letters; September 1995, Vol. 20 Issue: 18 p1892-1894, 3p
Abstrakt: We demonstrate experimentally that solid-state lasers with strong solitonlike pulse shaping can be mode locked by a slow saturable absorber only, i.e., the response time is much slower than the width of the soliton. A Ti:sapphire laser mode locked by a low-temperature-grown GaAs absorber with 10-ps recovery time generates pulses as short as 300 fs without the need for Kerr-lens mode locking and critical cavity alignment. An extrapolation of this result would predict that an ≈100-fs recovery time of a semiconductor absorber could support pulses into the 10-fs regime.
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