Effect of cerium codoping in Er3+,Ce3+: NaLa(MoO4)(2) crystals

Year: 2005

Authors: Sani E., Toncelli A., Tonelli M., Lis D.A., Zharikov E.V., Subbotin K.A., Smirnov V.A.

Autors Affiliation: National Enterprise for Nanoscience and Nanotechnology (NEST), Dipartimento di Fisica,

Abstract: The detailed polarized spectroscopic investigation of I-4(11/2) and I-4(13/2) states of Er3+ ions in Czochralski-grown NaLa(MoO4)(2) single crystals doped with Er3+ and codoped with Ce3+ as a function of cerium concentration is presented. The main results of room-temperature lifetime investigation show that the I-4(11/2) lifetime reduces by about 50 times from the solely Er-doped sample to the crystal codoped with 50 at. % of Ce, while in the same experimental conditions, the lifetime of the I-4(13/2) level reduces by less than two times in the most heavily Ce codoped sample. This result looks very promising from the point of view of obtaining low-threshold 1.5-mu m laser oscillation. (c) 2005 American Institute of Physics.


Volume: 97 (12)      Pages from: 123531-1  to: 123531-6

More Information: This investigation has been supported by Italian-Russian Commission on scientific collaboration (Project No. 20 RB-31), by Russian Foundation for Basic Research (Grant No. 03-02-17360), and by a grant from Alcatel Italia. The authors wish to thank Ilaria Grassini and Fabio Torri for technical assistance.
KeyWords: Cerium codoping; Laser oscillations; Polarized spectroscopy; X-ray backscattering, Annealing; Backscattering; Calcium compounds; Cerium; Crystal growth from melt; Doping (additives); Erbium; Laser applications; Optical properties; Positive ions; Single crystals; Spectroscopic analysis; X ray analysis, Sodium compounds
DOI: 10.1063/1.1938276

Citations: 37
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