Pressure- and temperature-dependent luminescence properties of ³F_3/2 → ⁴I_9/2 transition of Nd³⁺:GdTaO₄ were studied for potential applications in optical sensing. Two isolated emission lines corresponding to ³F_3/2 (R_{2, 1}) → ⁴I_9/2 (Z₅) transitions, located at 920 and 927 nm under ambient condition, are very sensitive to pressure with coefficients of −15.6 and −14.5 cm⁻¹/GPa determined in a pressure range up to about 9 GPa. The luminescence intensity ratio between the two emission lines exhibits a large dependence with temperature in a range from 80 to 620 K, the corresponding temperature sensitivity at room temperature is similar to that of Nd³⁺:YAG. These advantages, together with the other observed features of high stable position relationship under pressure and low thermal shifts for the two emission lines indicate that Nd³⁺:GdTaO₄ is a promising candidate to be used as pressure and temperature sensors in the near-infrared spectral range.

研究了 Nd ³⁺ :GdTaO _4的³ F _3/2  →  ⁴ I _9/2跃迁的压力和温度依赖性发光特性，以用于光学传感中的潜在应用。对应于³ F _3/2 (R _{2, 1} ) → ⁴ I _9/2 (Z ₅ ) 跃迁的两条隔离发射线，在环境条件下位于 920 和 927 nm，对压力非常敏感，系数为 -15.6 和-14.5 厘米^-1/GPa 在高达约 9 GPa 的压力范围内确定。两条发射线之间的发光强度比在80～620 K范围内随温度的变化很大，室温下相应的温度敏感性与Nd ³⁺ :YAG相似。这些优势，以及在压力下观察到的高稳定位置关系和两条发射线的低热位移的其他特征表明，Nd ³⁺ :GdTaO ₄是一种很有前途的候选者，可用作近红外中的压力和温度传感器光谱范围。