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Title

Raman Scattering and Nd3+ Laser Operation in NaLa(WO4)2

AuthorsGarcía-Cortés, Alberto; Cascales, Concepción CSIC ORCID; Andrés, Alicia de CSIC ORCID; Zharikov, Evgenii V.; Subbotin, Kirill A.; Bjurshagen, Stefan; Valdas, Pasiskevicius; Rico, Mauricio CSIC ORCID CVN
KeywordsDisordered materials
laser tuning
Raman scattering
rare-earth optical spectroscopy
solid-state lasers
NaLa(WO4)2
neodymium
SRS
Issue Date22-Jan-2007
PublisherInstitute of Electrical and Electronics Engineers
CitationIEEE Journal of Quantum Electronics 43 (1) : 758-764 (2007)
AbstractThe continuous-wave laser operation of Nd-doped tetragonal NaLa(WO4)2 crystal is studied at room temperature by optical pumping in the spectral region overlapping AlGaAs diode laser emission. This crystal has inhomogeneously broadened optical bands. From the room-temperature spectroscopic parameters determined it is found that the optimum Nd concentration for the 4F3/2 --> 4IJ laser channels must be in the 3-5 at.% range. For J=11/2 and 13/2 channels (lambda approximate to 1.06 and 1.3 mum) the most favourable polarization configuration is parallel to the crystallographic c axis, while for J=9/2 little polarization dependence of the laser efficiency is predicted. Laser operation was achieved with a 3.35 at.% Nd-doped sample grown by the Czochralski method. The laser operation was tested in an hemispherical optical cavity pumped by a Ti:sapphire laser. Stimulated emission at lambda=1056 nm was achieved for a wide spectral pumping range, lambda=790-820 nm. Stimulated Raman scattering was achieved in the picosecond regime with an efficiency similar to that of monoclinic KY(WO4)2 reference compound
Publisher version (URL)http://dx.doi.org/10.1109/JQE.2006.886450
URIhttp://hdl.handle.net/10261/23960
DOI10.1109/JQE.2006.886450
ISSN0018-9197
Appears in Collections:(ICMM) Artículos




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