Journal ArticleDOI
Laser modulation photothermal radiometer—a new method for measuring weak absorption in bulk materials and coatings
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TLDR
In this article, a new method was developed for measuring weak absorption in bulk materials and coatings based on recording a change in the integrated thermal radiation flux from the surfaces of samples heated by periodic laser radiation pulses.Abstract:
A new method was developed for measuring weak absorption in bulk materials and coatings It is based on recording a change in the integrated thermal radiation flux from the surfaces of samples heated by periodic laser radiation pulses The possibility is discussed of making absolute measurements by simulation of surface heat sources in the materials investigated, and also by comparing them with standard samples The sensitivity of the method is estimated and the results of absorption measurements on a number of materials are presented Consideration is given to limitations imposed on the operating range of laser pulse repetition frequencies by the thickness of the layer of the substance emitting the thermal flux and by the increase in the transverse dimensions of the illuminated area arising on account of thermal diffusionread more
Citations
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Journal ArticleDOI
Laser photothermal spectroscopy of light-induced absorption
TL;DR: In this article, basic methods of laser photothermal spectroscopy, which are used to study photoinduced absorption in various media, are briefly considered, and the latest results obtained in this field are discussed.
Patent
Method and device for analyzing and measuring physical parameters of a layered material by thermal radiometry
Michel Egee,Robert Dartois,Jean Marx,Etienne Merienne,Marcel Regalia,Philippe Poplimont,Etienne Van Schel +6 more
TL;DR: In this article, a method and a device are used to analyze and measure by means of radiometry physical parameters of a layered material, including the absorptivity B, the diffusivity A of the surface layer and the thermal resistance R of the interface between the two layers.
Patent
Method and device for the measurement and analysis of the physical parameters of a layered material using thermal radiometry
Michel Egee,Robert Dartois,Jean Marx,Etienne Merienne,Marcel Regalia,Philippe Poplimont,Etienne Van Schel +6 more
TL;DR: In this paper, a method and a device for analyzing and measuring physical parameters of a material (1) in layers (10,11), parameters such as absorptivity B, the diffusivity of the surface layer, and the thermal resistance R of the interface between the two layers by radiometry.
Journal ArticleDOI
Measurement of the body surface temperature by the method of laser photothermal radiometry
L A Skvortsov,V M Kirillov +1 more
TL;DR: In this article, the specific features of contactless measurements of the body surface temperature by the method of repetitively pulsed laser photothermal radiometry are considered and the requirements to the parameters of the laser and measurement scheme are formulated.
Journal ArticleDOI
Light-Induced Absorption in Materials Studied by Photothermal Methods
TL;DR: In this article, the authors reviewed the developments and patent literature in the area of photothermal methods modified for measurement steady state and temporal behavior of light-induced (photoinduced) absorption in bulk materials and thin films.