Waveguides were written in glass using the femtosecond laser direct-write technique. The refractive index changes induced were found to be polarization dependent. We propose that photo-ionization rates are the origin of this polarization dependence.
© 2009 The Optical Society
(130.0130) Integrated optics : Integrated optics
(320.0320) Ultrafast optics : Ultrafast optics
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(130.2755) Integrated optics : Glass waveguides
D. J. Little, M. Ams, P. Dekker, G. D. Marshall, J. M. Dawes, and M. J. Withford, "Polarization Dependence of Photo-Ionization in Glasses and Applications to Direct-Write Photonics," in Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA Technical Digest (CD) (Optical Society of America, 2009), paper CFT4.
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