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Efficient frequency doubling in femtosecond laser - written waveguides in lithium niobate

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


Applied Physics Letters 89 (2006), No.8, Art. 081108, 3 pp.
ISSN: 0003-6951
ISSN: 1077-3118
Journal Article
Fraunhofer IOF ()

Optical waveguides in lithium niobate have been fabricated with a femtosecond laser. Different types of modifications depending on the laser parameters were observed and discussed. In these waveguides, frequency doubling of 1064 nm radiation was demonstrated utilizing birefringent phase matching. A conversion efficiency of 49% was obtained in a 9.3 mm long sample.