Carvajal J J, Ciatto G, Mateos X, Schmidt A, Griebner U, Petrov V, Boulon G, Brenier A, Peña A, Pujol M C, Aguiló M, Díaz F
Física i Cristal.lografia de Materials i Nanomaterials (FiCMA-FiCNA), Universitat Rovira i Virgili, Campus Sescelades E-43007 Tarragona, Spain.
Opt Express. 2010 Mar 29;18(7):7228-42. doi: 10.1364/OE.18.007228.
By means of micro-structural and optical characterization of the Yb:Nb:RbTiOPO(4) crystal, we demonstrated that the broad emission band of Yb(3+) in these crystals is due to the large splitting of the ytterbium ground state only, and not to a complex multisite occupation by the ytterbium ions in the crystals. We used this broad emission band to demonstrate wide laser tuning range and generation of femtosecond laser pulses. Passive mode-locked laser operation has been realized by using a semiconductor saturable absorber mirror, generating ultra short laser pulses of 155 fs, which were very stable in time, under Ti:sapphire laser pumping at 1053 nm.
