The response of individual defect nanoclusters located in the bulk of a dielectric material following exposure to 355-nm, 3-ns high-power laser irradiation is investigated by use of microscopic fluorescence imaging. Experiments were carried out on KH<sub>2</sub>PO<sub>4</sub> crystals. We provide direct imaging of the reaction to an external stimulus of individual defect clusters and demonstrate a novel method of studying the dynamic behavior of bulk defects.
© 2001 Optical Society of America
(180.2520) Microscopy : Fluorescence microscopy
(300.2570) Spectroscopy : Four-wave mixing
(300.6250) Spectroscopy : Spectroscopy, condensed matter
(350.3450) Other areas of optics : Laser-induced chemistry
S. G. Demos, M. Staggs, J. J. De Yoreo, and H. B. Radousky, "Imaging of laser-induced reactions of individual defect nanoclusters," Opt. Lett. 26, 1975-1977 (2001)