Rare earth lasers

Contents Analogies and Differences Between Monatomic Entities and Condensed Matter. -Rare-Earth Lasers. - Chemical Bonding and Lanthanide Spectra. - Energy Transfer. - Applications and Suggestions. 

Because of the wide transmission range and low phonon energies of fluoride glasses, the observation of numerous rare-earth laser lines is possible at wavelengths beyond 2 fim, where the transmission of silica fibers is extremely poor. Laser sources around 2 /jm are of special interest because they belong, not only to the eye-safe spectral domain, but also to an optical transparency window of the atmosphere. Two fluoride glass fiber lasers have been demonstrated in that region. First, a Ho3+ laser with the 5I7 -> 5I8 transition at 2.024 /on which delivers 250 mW with 60%... 

More detailed discussions of the spectroscopic features of the ion and the properties of the host that influence the potential for laser action are presented in a review article (J9 ) and a book (36) devoted to rare-earth lasers. 

Caird, J. A., On the Evaluation of Rare Earth Laser Materials and the Matrix Elements of Orbital Tensor OperatorsPh. D. thesis, University of Southern California, Los Angeles (1975), Available from Univeristy Microfilms, Ann Arbor, Michigan. 

Weber, M. S. (1984). Rare Earth Lasers. In Handbook on the Physics and Chemistry of Rare Earths, Vol. 4, ed. K A. Gschneidner Jr. and L. R. Eyring. Amsterdam North-Holland Physics Publishing. 

G. Blase, Chemistry and physics of R-activated phosphors MJ. Weber, Rare earth lasers 275... 

Joubert M-F (1999) Photon avalanche upconversion in rare earth laser materials. Opt Mater 11 181-203... 

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