Research Progress on Lu2O3 Based Laser Transparent Ceramics
Sesquioxide Lu2O3 has excellent thermodynamic properties,low phonon energy and strong crystal field characteristics,making it one of the excellent candidates for wideband high-power laser matrix materials in the near-infrared and mid-infrared spectra(1～3 µm),and attracting widespread attention in recent years.Since Lu2O3 has a melting point of up to 2 45O ℃,growing single crystal is extremely difficult,limiting its application development.However,Lu2O3 belongs to the cubic crystal system and is optically isotropic,making Lu2O3-based transparent ceramics a viable option.Compared to single crystal,transparent ceramics can be sintered at lower temperatures(60％～80％of the melting point of crystals)to prepare large-size samples,while the sintering cycle is greatly reduced and more conducive to mass production,so the preparation of Lu2O3-based transparent ceramics as a new type of laser material has the potential for a wider range of applications in scientific research,industrial production and daily life.In this paper,the preparation technology and properties of Lu2O3-based laser transparent ceramics doped with rare earth ions(Nd3+,Er3+,Yb3+,Tm3+,Ho3+)are reviewed.In the future,the development of half-oxide Lu2O3-based laser ceramics will be focused on large size,high power output,low scattering characteristics,high thermal stability,and composite structure design to promote the development of high-performance solid-state lasers.
transparent ceramicsLu2O3laser ceramicssesquioxidesolid-state laserlaser gain medium
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