Single-beam interface thermal lensing.
A single-beam photothermal-lensing technique to study interfaces is presented. By analysis of the reflection from a quartz-solution interface with a low-power laser in a single-beam configuration, a photothermal signal is detected. The data were fitted with a conventional thermal lens model, and the results show that the optical element formed at the interface resembles an inverted thermal lens.
Gugliotti
M
M
Departamento de Bioquímica, Instituto de Química, Universidade de Sāo Paulo, Av. Prof. Lineu Prestes 748, Sāo Paulo 05508-940, Brazil.
Baptista
M S
MS
Dias
L G
LG
Politi
M J
MJ