Photoacoustic cell for spectroscopy at low temperatures
Photoacoustic cell for spectroscopy at low temperatures
复制标题
用于低温光谱的光声池
DOI：
10.1063/1.1315350
复制
发表时间：
2000
影响因子：
1.6
通讯作者：
W. Grill
中科院分区：
文献类型：
--
作者：
U. Stoerkel;W. Grill
基于光声效应，我们已经开发出一种细胞在低温下（1和2 K之间）的光谱应用。超导测辐射热计用作液氦中温度波（所谓的第二声）的探测器。这些波是在吸收的光能由于样品中的非辐射衰变而转化为热之后产生的。该池由一个具有两个焦点的椭圆镜组成，其中放置样品和检测器。在这篇文章中，我们展示了细胞的一些特性。除此之外，我们提出了掺杂的无机玻璃的吸收光谱作为光声方法的可能应用的第一个例子。
Based on the photoacoustic effect we have developed a cell for application in optical spectroscopy at low temperatures (between 1 and 2 K). A superconducting bolometer serves as a detector for temperature waves (so-called second sound) in liquid helium. These waves are generated after transformation of the absorbed light energy into heat due to nonradiative decay in the sample. The cell consists of an elliptical mirror with two focal points, in which the sample and the detector are placed. In this article we show some characteristic properties of the cell. In addition to that we present an absorption spectrum of a doped inorganic glass as a first example of possible applications of the photoacoustic method.