本文研究了Zn3BPO7(ZBP)晶体的THz时域光谱以及从中红外到远红外的吸收光谱,以及6.6 cm-1 (0.2 THz)～4000 cm-1宽频段的红外光谱光学性质.THz吸收光谱表明晶体在0.5～1.2 THz有较好的透射性质,在1.7 THz和2.5 THz分别存在一个泛频共振峰和基频共振峰,并且折射率稳定.在远红外区(100～2700 cm-1)晶体的透射率极小,几乎接近于零.在中红外波段(2700～4000 cm-1)晶体具有较好的透射性质.50～4000 cm-1波段的吸收规律表明ZBP晶体具有做成特定波段滤波器的潜力.
The terahertz (THz) time-domain spectra and mid-infrared to far-infrared absorption spectra of Zn3BPO7(ZBP) crystal were measured in the range of 6.6 cm-1 (0.2 THz)-4000 cm-1. The infrared optical properties of the crystal were discussed. The THz absorption spectrum shows the better transmittance properties in the range of 0.5-1.2 THz. There are overtone resonance and fundamental phonon resonance peaks in 1.7 THz and 2.5 THz, respectively. The ZBP has stable refractive index in THz region. The transmittance of the crystal is very little and nearly zero in the range of 100-2700 cm-1. There is better transmittance in mid-infrared range of 2700-4000 cm-1. The absorption features of ZBP in the range of 50-4000 cm-1 may be useful in filtering applications.
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