Visible-light spectroscopy by photothermal radiometry using an incoherent source
- 1 April 1981
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 38 (7), 486-488
- https://doi.org/10.1063/1.92427
Abstract
Photothermalradiometry (PTR) is shown to yield optical absorptionspectra in the visible region of untreated and strongly scattering material, using Nd2O3 powder, blood, and a green leaf as test samples. A conventional high pressure Xe lamp/monochromator combination was employed for illumination at power levels below 1 mW, with a PbSnTe infrared detector for recording the thermal reradiation. Calculated PTR signals and signal‐to‐noise ratios are found to compare well with those observed.Keywords
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