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- Title
Growth and Device Fabrication of Mid to Far-Infrared Cr<sup>2+</sup>/Fe<sup>2+</sup> :CdSe Crystals.
- Authors
HUANG Changbao; HU Qianqian; ZHU Zhicheng; LI Ya; MAO Changyu; XU Junjie; WU Haixin; NI Youbao
- 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.
- Subjects
NONLINEAR optical materials; TRANSITION metal ions; CRYSTALS; SOLID-state lasers; ABSORPTION coefficients; ATOMIC absorption spectroscopy
- Publication
Journal of Synthetic Crystals, 2024, Vol 53, Issue 4, p551
- ISSN
1000-985X
- Publication type
Article