Nd-doped transparent tellurite ceramics bulk lasers.

Title Nd-doped transparent tellurite ceramics bulk lasers.
Authors M. Dolhen; M. Tanaka; V. Couderc; S. Chenu; G. Delaizir; T. Hayakawa; J. Cornette; F. Brisset; M. Colas; P. Thomas; J.R. Duclère
Journal Sci Rep
DOI 10.1038/s41598-018-22922-5

We report on the laser emission of the polycrystalline ceramic obtained from the full and congruent crystallization of the parent glass 1Nd:75TeO-12.5BiO-12.5NbO composition. In particular, the current work underlines the importance of carefully controlling the heat treatment in order to solely crystallize the BiNbTeO cubic phase and consequently avoid the formation of the BiNbTeO orthorhombic phase that would be detrimental for optical purpose. The structure, microstructure and photoluminescence properties of the resulting transparent tellurite ceramics are characterized. The continuous-wave and gain-switching laser performances reveal that the emission remains perfectly single transversal mode in the range of pump powers explored. The maximum output power achieved was ~28.5?mW, for a pump power threshold of ~67?mW, and with associated efficiency and slope efficiency of ~22.5% and ~50%, respectively. These data definitely stand among the best results obtained so far for bulk laser tellurite materials and thus demonstrate the potential of such polycrystalline transparent ceramics as optically active materials. Finally, the laser emission characteristics in pulsed regime, at low and high repetition rates, are also provided: more than 6.5?W of peak power at a repetition rate of 728?kHz can be obtained.

Citation M. Dolhen; M. Tanaka; V. Couderc; S. Chenu; G. Delaizir; T. Hayakawa; J. Cornette; F. Brisset; M. Colas; P. Thomas; J.R. Duclère.Nd-doped transparent tellurite ceramics bulk lasers.. Sci Rep. 2018;8(1):4640. doi:10.1038/s41598-018-22922-5

Related Elements


See more Tellurium products. Tellurium (atomic symbol: Te, atomic number: 52) is a Block P, Group 16, Period 5 element with an atomic radius of 127.60. Tellurium Bohr ModelThe number of electrons in each of tellurium's shells is 2, 8, 18, 18, 6 and its electron configuration is [Kr] 4d10 5s2 5p4. Tellurium was discovered by Franz Muller von Reichenstein in 1782 and first isolated by Martin Heinrich Klaproth in 1798. In its elemental form, tellurium has a silvery lustrous gray appearance. The tellurium atom has a radius of 140 pm and a Van der Waals radius of 206 pm. Elemental TelluriumTellurium is most commonly sourced from the anode sludges produced as a byproduct of copper refining. The name Tellurium originates from the Greek word Tellus, meaning Earth.

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