Abstract
A highly transparent Nd,Y-codoped Ca1-xSrxF2 glass-ceramic with excellent optical properties was fabricated by the controllable spontaneous precipitation (CSP) under supersaturated state. The micron-sized Ca1-xSrxF2 crystal provides a favorable emission environment for Nd3+ ions. Meanwhile, the buffer ions Y3+ effectively addressed the fluorescence quenching originating from [Nd3+-Nd3+] clusters. The corresponding sample exhibited high transmittance (T@1053 nm = 83%), large absorption coefficient (9 cm−1@796 nm), intense 1.053 μm photoluminescence, large emission bandwidth (~32 nm), and moderate lifetime (167 μs), implying the glass ceramic would be powerful candidates for application in ultrashort pulse lasers. In addition, the sample also showed low phonon energy (IR-cut edge~4.5 μm), a low absorption coefficient of –OH (α-OH~1.0 × 10−4 cm−1), and high mid-infrared transmittance (T@2700 nm = 85.4%), which is expected to be applied in the field of mid-infrared.
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