Bridgman Growth and Spectral Properties of Nd3 +∶YCa4O(BO3)3 Single Crystal
CHEN Ya-ping;SUN Zhi-gang;ZHAO Yan;LIAO Fan;CHEN Hong-bing
2019, 48(11):
2008-2013.
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Nd3+-doped YCOB single crystal is a valuable self-double-frequency optical material applied in laser modulation technique.Nd3 + ∶ YCOB polycrystalline powder was initially synthesized by solid-state reaction at elevated temperature.High purity Nd3 + ∶ YCOB crystal grain was prepared from the polycrystalline powder by zone melting process.A series of transparent Nd3+ ∶ YCOB single crystals,with 1mol;,2mol; and 5mol; nominal Nd3+ dopant concentration,had been grown by means of vertical Bridgman method with optimized conditions.The spectral properties of as-grown crystals were characterized by measuring the absorption spectra,fluorescence spectra and fluorescence lifetime.It shows that Nd3+:YCOB crystal wafers exhibit a strong fluorescence emission centered at 1064 nm wavelength with a fluorescence lifetime of 157-162 μs upon photonic excitation with 808 nm infrared light.
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