1. Growth and Device Fabrication of Mid to Far-Infrared Cr2+/Fe2+ :CdSe Crystals.
- Author
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HUANG Changbao, HU Qianqian, ZHU Zhicheng, LI Ya, MAO Changyu, XU Junjie, WU Haixin, and NI Youbao
- Subjects
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NONLINEAR optical materials , *TRANSITION metal ions , *CRYSTALS , *SOLID-state lasers , *ABSORPTION coefficients , *ATOMIC absorption spectroscopy - Abstract
In this study, the Cr2+ :CdSe and Fe2+ :CdSe crystals were successfully grown by the Mo-crucible sealed Bridgman method using a vacuum single-crystal furnace with two zones developed by ourselves, and the crystal size reaches φ51 mm x 110 mm. Cr2+ :CdSe and Fe2+ :CdSe crystals demonstrate obvious absorption in the bands of 1 400 ~ 2 400 nm and 2 500 ~5 200 nm, respectively. The transmittances of Cr2+/Fe2+ doped CdSe crystals are close to the transmittance limit of CdSe crystal (~70%) in the 7 ~ 15 μm band, and the converted absorption coefficient is about 0.005 cm-1. The Cr2+/Fe2+ : CdSe crystals grown by the Mo-crucible sealed Bridgman method have the advantages of the controllable doping concentration of transition metal ions, uniform doping and high crystal quality. The Cr2+/Fe2+ : CdSe crystals could be used as both midinfrared laser crystal and far-infrared nonlinear optical crystal material. [ABSTRACT FROM AUTHOR]
- Published
- 2024