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Sub-100-fs Cr:YAG laser mode-locked by monolayer graphene saturable absorber.
Davide Di Dio Cafiso, Samuele,Ugolotti, Elena,Schmidt, Andreas,Petrov, Valentin,Griebner, Uwe,Agnesi, Antonio,Cho, Won Bae,Jung, Bo Hee,Rotermund, Fabian,Bae, Sukang,Hong, Byung Hee,Reali, Giancarlo,P Optical Society of America 2013 Optics letters Vol.38 No.10
<P>We report on mode-locking of a Cr:YAG laser at 1516 nm using a monolayer graphene-based saturable absorber of transmission type generating 91 fs pulses with a Fourier product of 0.38 at an average output power exceeding 100 mW. Stable single-pulse mode-locked operation without any sign of Q-switching instabilities or multiple pulses is achieved.</P>