Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Origins of waveguiding in femtosecond laser-structured LiNbO3

: Burghoff, J.; Nolte, S.; Tünnermann, A.


Applied physics. A 89 (2007), No.1, pp.127-132
ISSN: 0340-3793
ISSN: 0721-7250
ISSN: 0947-8396 (Print)
ISSN: 1432-0630 (Online)
Journal Article
Fraunhofer IOF ()

Femtosecond laser-induced structural changes in LiNbO3 are studied. Depending on the laser processing parameters two different types of modification are identified and their origin is discussed. Both types of modification can be described within the framework of induced lattice defects. For strong material damage a refractive index increase can be obtained due to the induced stress field. By appropriate tailoring of this stress field thermally stable and highly symmetric waveguides can be obtained well suited for nonlinear integrated-optical applications.