Abstract
The nonradiative processes associated with the absorption of electromagnetic radiation result in the heating of the material (solids, liquids, or gases) under investigation. Typical values of the temperature rise are 10-5°C. This temperature rise is what is exploited to measure very small optical absorption coefficients (αl ~ 10−8) and to determine thermal and electronic transport properties of matter. Over the past few years we have developed two purely optical approaches for performing photo-thermal spectroscopy: photothermal deflection1 and photothermal displacement.2
© 1985 Optical Society of America
PDF ArticleMore Like This
R. Gupta
TUD2 OSA Annual Meeting (FIO) 1985
Michelle Y. Sander
LM4D.1 Laser Applications to Chemical, Security and Environmental Analysis (LACSEA) 2014
Andrew C. Tam
TUD3 OSA Annual Meeting (FIO) 1985