Theory of the photothermal radiometry with solids

Photothermal Radiometry – Principle and Applications

Photothermal radiometry has been proved being a versatile tool for the non-contact and non-destructive material inspection in near-surface zones. Although these near-surface areas represent only a few percent of the workpiece’s volume, they influence significantly its quality, functional behaviour, reliability and life time. In particular, they determine decisively the mechanical properties of ...

Photothermal Radiometry for Skin Research

Abstract: Photothermal radiometry is an infrared remote sensing technique that has been used for skin and skin appendages research, in the areas of skin hydration, hydration gradient, skin hydration depth profiling, skin thickness measurements, skin pigmentation measurements, effect of topically applied substances, transdermal drug delivery, moisture content of bio-materials, membrane permeatio...

Comparison of the photothermal sensitivity of an interferometric optical fiber probe with pulsed photothermal radiometry

An interferometric optical fiber probe for making photothermal measurements of tissue optical and thermal properties is compared to pulsed photothermal radiometry in terms of its overall thermal sensitivity, linearity, and response time. The principles of operation of the probe are described and its performance as a low finesse Fabry–Perot interferometer is discussed. A probe with a 12 mm sensi...

Measurement of Paint Layer Thickness with Photothermal Infrared Radiometry

THE THEORY OF PHOTOTHERMAL LENSING SPECTROSCOPY

A general theoretical description of dual-beam photothermallensing spectroscopy is given. The results are valid for most general conditions, that is, for flowing as well as stationary media, for optically thick as well as optically thin media, and also for any transverse modes of incident pump beams