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Tunable continuous wave and femtosecond mode-locked Yb3+ laser operation in NaLu(WO4)2

AuthorsGarcía-Cortés, Alberto; Cano-Torres, José María CSIC ORCID; Han, Xiumei CSIC; Cascales, Concepción CSIC ORCID; Zaldo, Carlos CSIC ORCID; Mateos, Xavier; Rivier, Simón; Griebner, Uwe; Petrov, Valentín; Valle Fuentes, Francisco José CSIC
KeywordsLaser tuning
Laser mode locking
Sodium compounds
Lutetium compounds
Solid lasers
Optical pumping
Issue Date27-Mar-2007
PublisherAmerican Institute of Physics
CitationJournal of Applied Physics 101(6): 063110 (2007)
AbstractContinuous wave and femtosecond mode-locked laser operation of Yb3+ in the tetragonal NaLu(WO4)2 crystal host is demonstrated by pumping with a Ti:sapphire laser. Pumping with 1.8 W at 974 nm, a maximum output power of 650 mW was achieved at 1029.6 nm. The slope efficiency was in excess of 60%. The laser performance was similar for the two polarizations. By inserting a birefringent filter the output wavelength was tunable from 1010 to 1055 nm. Pulses as short as 90 fs with an average power of 50 mW were generated by passive mode locking at a repetition rate of 95 MHz. These attractive laser properties of NaLu1−xYbx(WO4)2 are related to the inhomogeneous broadening of the Yb3+ spectral features resulting from the local disorder of the host crystal. We report the spectroscopic properties of Yb3+ in the 5–300 K temperature range and the optical properties of the host at room temperature.
Description7 pages, 13 figures, 3 tables.-- PACS: 42.55.Rz; 42.60.By; 42.60.Fc
Publisher version (URL)http://dx.doi.org/10.1063/1.2490382
Appears in Collections:(ICMM) Artículos
(ICV) Artículos
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