Title :
Photothermal method for determinate absorption of thin-film coatings
Author :
Petrovska, Galyna A.
Author_Institution :
Dept. of Photonics, Lviv Polytech. Nat. Univ., Lviv
fDate :
Sept. 29 2008-Oct. 4 2008
Abstract :
The photothermal method for determinate absorption of the optical thin-film coatings is developed. The absorptance was determinate by the value of thermal lens in the air that is near the surface of the researcher sample. The thermal lens appears as a result of the absorption of the part high-power laser emission with known spatio-temporal distribution of energy. The value of thermal lens is measured by the scanning two-channel interferometer of Fabry-Perot.
Keywords :
Fabry-Perot interferometers; light absorption; measurement by laser beam; optical films; spatiotemporal phenomena; thermal lensing; thin films; Fabry-Perot interferometer; high-power laser emission; optical thin-film coatings; photothermal method; scanning two-channel interferometer; spatio-temporal distribution; thermal lens; thin film absorption measurement; Absorption; Coatings; Lenses; Optical films; Optical interferometry; Optical sensors; Phase measurement; Surface emitting lasers; Thermal lensing; Transistors; absorptance; interferometer of Fabry-Perot; photothermal; thin-film coatings;
Conference_Titel :
Advanced Optoelectronics and Lasers, 2008. CAOL 2008. 4th International Conference on
Conference_Location :
Crimea
Print_ISBN :
978-1-4244-1973-9
Electronic_ISBN :
978-1-4244-1974-6
DOI :
10.1109/CAOL.2008.4671949
