Picosecond photoinduced absorption in photorefractive BaTiO_3
- 1 July 1991
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 16 (13) , 980-982
- https://doi.org/10.1364/ol.16.000980
Abstract
Picosecond photoinduced absorption in BaTiO3 has been observed for the first time to our knowledge using picosecond laser pulses and a time delay pump–probe technique. The pump intensity dependence as well as the delay time dependence of the photoinduced absorption coefficient have been measured. The results can be explained qualitatively by a secondary-center model. From our results, the hole recombination time with secondary centers is not larger than 60 ps.Keywords
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