León-Luis S F, Muñoz-Santiuste J E, Lavín V, Rodríguez-Mendoza U R
Departamento de Física Fundamental y Experimental, Electrónica y Sistemas and MALTA Consolider Team, Universidad de La Laguna. E-38200 San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain.
Opt Express. 2012 Apr 23;20(9):10393-8. doi: 10.1364/OE.20.010393.
Hypersensitivity to pressure and temperature is observed in the near-infrared emission lines of the Nd(3+) ion in a Cr(3+),Nd(3+):Gd(3)Sc(2)Ga(3)O(12) crystal, associated to the R(1,2)((4)F(3/2))→Z(5)((4)I(9/2)) and R(1,2)((4)F(3/2))→Z(1)((4)I(9/2)) transitions. The former emissions show large linear pressure coefficients of -11.3 cm(-1)/GPa and -8.8 cm(-1)/GPa, while the latter show high thermal sensitivity in the low temperature range. Thus this garnet crystal can be considered a potential optical pressure and/or temperature sensor in high pressure and temperature experiments up to 12 GPa and below room temperature, used in diamond anvil cells and excited with different UV and visible commercial laser due to the multiple Cr(3+) and Nd(3+) absorption bands.
在Cr(3+)、Nd(3+):Gd(3)Sc(2)Ga(3)O(12)晶体中，观察到Nd(3+)离子的近红外发射线对压力和温度敏感，这与R(1,2)((4)F(3/2))→Z(5)((4)I(9/2))和R(1,2)((4)F(3/2))→Z(1)((4)I(9/2))跃迁有关。前者发射显示出-11.3 cm(-1)/GPa和-8.8 cm(-1)/GPa的大线性压力系数，而后者在低温范围内显示出高热敏性。因此，由于多个Cr(3+)和Nd(3+)吸收带，这种石榴石晶体可被视为在高达12 GPa和低于室温的高压和温度实验中的潜在光学压力和/或温度传感器，用于金刚石对顶砧池并用不同的紫外和可见商用激光激发。
