Broad emission band of Yb3+ in the nonlinear Nb:RbTiOPO4 crystal: origin and applications.
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.
Carvajal
J J
JJ
Física i Cristal.lografia de Materials i Nanomaterials (FiCMA-FiCNA), Universitat Rovira i Virgili, Campus Sescelades E-43007 Tarragona, Spain. joanjosep.carvajal@urv.cat
Ciatto
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Mateos
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Schmidt
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Griebner
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Petrov
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Boulon
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Brenier
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Peña
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A
Pujol
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MC
Aguiló
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Díaz
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