Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 12, Issue 18, Pages L287-L292Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/12/18/101
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The Stark structure of the I-4(13/2) and I-4(15/2) multiplets of the Er3+ ion in CaGd4Si3O13 (CGS) was determined. The transition cross-sections have been obtained from the absorption and the luminescence spectra The emission cross-section for pi-polarization in the 1529.5 nm luminescence band is equal to 2.1 x 10(-20) cm(2). A gain curve has been plotted fo pi-polarization, and positive amplification occurs at 1550 nm. A wide luminescence band makes it possible to obtain tunable generation in the range 1540-1590 nm. The spectral parameters of the crystals Er, Ce:CGS indicate ample scope for developing an effective 1.5 mu m laser with semiconductor pumping.
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