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Spectroscopic data for infrared transitions in CaGa2S4:Dy3+ and KPb2Cl5:Dy3+

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We have identified two low phonon energy hosts that we believe will allow lasing in the mid-IR spectral region (4-10 μm). CaGa2S4 (calcium thiogallate) and KPb2Cl5 (potassium lead chloride) are both non-hygroscopic and readily incorporate rare earth ions. Spectroscopic data for these two crystalline hosts are presented, and the possibility of lasing in the mid-IR at room temperature is discussed.

© 1998 Optical Society of America

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