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2 May 1997 Frequency upconversion of Er3+ in Ga2S 3-GeS2-La2S3glasses
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Glasses containing Er3+ ions of 0.3 to 7 cation mol percent were prepared in the system of Ga2S3-GeS2-LaS3. Frequency upconversion spectra of Er3+ in the glasses were measured under the excitation at 800 nm and 980 nm. Green emissions at 533 nm (2H11/2yields4I15/2) and 552 nm (4S3/2yields4I15/2), and red emission at 665 nm (4F9/2yields4I15/2) were observed.In addition to these emission bands, 497 nm emission assigned to the 4F7/2yields4I15/2 transition was observed. The spectral properties are analyzed from the view points of low phonon energy property and high refractive index.
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Kohei Kadono, Masahide Takahashi, Hiroto Higuchi, Masanori Shojiya, Tomoko Ohtsuki, Yoji Kawamoto, and Nasser Peyghambarian "Frequency upconversion of Er3+ in Ga2S 3-GeS2-La2S3glasses", Proc. SPIE 2996, Rare-Earth-Doped Devices, (2 May 1997);

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