title: Modeling the population lens effect in thermal lens spectrometry.
abstract: We report a theoretical model and experimental results for laser-induced lensing in solids. The model distinguishes and quantifies the contributions from population and thermal effects. Laser-induced lensing in ytterbium-doped fluorozirconate glass ZBLAN:Yb(3+) is measured, and the thermal and optical properties obtained from analyzing the data with the proposed model agree well with published values. Photothermal techniques are used extensively for the investigation of laser and laser-cooling materials, and the model developed here enables the interpretation of convoluted laser-induced lensing signals that have contributions from different sources.
authors: Departamento de Física, Universidade Estadual de Maringá, Maringá, Paraná 87020-900, Brazil.
authors: J R
authors: JR
authors: Silva
authors: L C
authors: LC
authors: Malacarne
authors: M L
authors: ML
authors: Baesso
authors: S M
authors: SM
authors: Lima
authors: L H C
authors: LH
authors: Andrade
authors: C
authors: C
authors: Jacinto
authors: M P
authors: MP
authors: Hehlen
authors: N G C
authors: NG
authors: Astrath