Electronic Resource
[S.l.]
:
American Institute of Physics (AIP)
Review of Scientific Instruments
71 (2000), S. 4474-4478
ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
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. © 2000 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1315350
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