Photothermal method for determinate absorption of thin-film coatings

Author

Petrovska, Galyna A.

Author_Institution

Dept. of Photonics, Lviv Polytech. Nat. Univ., Lviv

fYear

2008

fDate

Sept. 29 2008-Oct. 4 2008

Firstpage

419

Lastpage

421

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CAOL.2008.4671949

Filename

4671949