Soulard R, Zinoviev A, Doualan J L, Ivakin E, Antipov O, Moncorgé R
Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMPA), UMR 6252 CNRS-CEA-ENSICAEN, Université de Caen, France.
Opt Express. 2010 Jan 18;18(2):1553-68. doi: 10.1364/OE.18.001553.
The refractive index changes which can be induced in the Nd:YVO(4), Nd:GdVO(4) and Nd:KGW high gain laser crystals, when their Nd(3+) laser active ions are pumped from their ground- to excited- energy levels, have been carefully measured and characterized. By using two complementary optical techniques based on pump-probe interferometry and transient diffraction grating, the electronic and thermal contributions to the observed refractive index variations have been accurately determined and successfully exploited to derive various parameters such as polarizability changes, thermo-optic coefficients and thermal diffusivities.
当掺钕钇钒酸盐（Nd:YVO(4)）、掺钕钆钒酸盐（Nd:GdVO(4)）和掺钕钨酸钆钾（Nd:KGW）高增益激光晶体中的Nd(3+)激光激活离子从基态泵浦到激发态能级时，所引起的折射率变化已得到仔细测量和表征。通过使用基于泵浦 - 探测干涉测量法和瞬态衍射光栅的两种互补光学技术，已准确确定了对所观察到的折射率变化的电子和热贡献，并成功利用这些贡献推导出诸如极化率变化、热光系数和热扩散率等各种参数。
