Junior R. Silva, Luis C. Malacarne, Mauro L. Baesso, Sandro M. Lima, Luis H. C. Andrade, Carlos Jacinto, M. P. Hehlen e Nelson G. Castelli Astrath

OPTICS LETTERS – Volume: 38; Issue: 4; Pages: 422-424; DOI: 10.1364/OL.38.000422

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:Yb3+ 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.