Zeman Marek, Camus Philippe, Chanelière Thierry
Univ. Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, 38000 Grenoble, France.
Absolut System, 3 avenue Raymond Chanas, 38320 Eybens, France.
Rev Sci Instrum. 2024 Oct 1;95(10). doi: 10.1063/5.0229775.
We propose and implement an optical technique to access the local temperature of an erbium doped crystal by probing the electron spin population under magnetic field. We reliably extract the sample temperature in the range 2-7 K. We additionally discuss the suitability of our method as a primary standard for cryogenic thermometry. By adding an auxiliary heating laser, we are able to measure the interface conductance between the dielectric crystal and the cold plate of the cryostat by exploring different cooling configurations.
我们提出并实施了一种光学技术，通过在磁场下探测电子自旋布居来获取掺铒晶体的局部温度。我们可靠地提取了2 - 7 K范围内的样品温度。我们还讨论了我们的方法作为低温测温一级标准的适用性。通过添加辅助加热激光器，我们能够通过探索不同的冷却配置来测量介电晶体与低温恒温器冷板之间的界面热导。
