1 February 2001 Abnormal photon absorption behavior in melanin detected by photothermal lensing due to simultaneous irradiation with multiple laser wavelengths
Author Affiliations +
Optical Engineering, 40(2), (2001). doi:10.1117/1.1339202
Abstract
A photophysical model for describing the absorption of light by melanin based on the mechanisms of sequential two-photon absorption is investigated. The process involves a conversion of the photon energy in a photochemical effect such as photodissociation of the biological molecules. The collinear photothermal lensing technique is employed to obtain stable, reliable and accurate detection of nonlinear photon absorption in melanin. In these experiments, a He-Ne laser and an argon-krypton ion laser are used to provide two different excitation wavelengths simultaneously. The experimental results were consistent with the theoretical model described.
Yue Han, Joseph S. Rosenshein, Z. L. Wu, Wen Ye, Marshall Thomsen, Qiang Zhao, "Abnormal photon absorption behavior in melanin detected by photothermal lensing due to simultaneous irradiation with multiple laser wavelengths," Optical Engineering 40(2), (1 February 2001). http://dx.doi.org/10.1117/1.1339202
JOURNAL ARTICLE
7 PAGES


SHARE
KEYWORDS
Absorption

Laser beam diagnostics

Molecules

Molecular biology

Physics

Visible radiation

Molecular lasers

RELATED CONTENT


Back to Top