Deep UV light induced, fast reconfigurable and fixed waveguides in Mg doped LiTaO3 | Zendy

Flurin Juvalta | Zendy; B. Koziarska-Glinka | Zendy; Mojca Jazbinšek | Zendy; Germano Montemezzani | Zendy; Kenji Kitamura | Zendy; Peter Günter | Zendy

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Deep UV light induced, fast reconfigurable and fixed waveguides in Mg doped LiTaO₃

Author(s) -

Flurin Juvalta,

B. Koziarska-Glinka,

Mojca Jazbinšek,

Germano Montemezzani,

Kenji Kitamura,

Peter Günter

Publication year - 2006

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.14.008278

Subject(s) - lithium tantalate , photorefractive effect , optics , materials science , doping , lithium niobate , waveguide , optoelectronics , wavelength , tantalate , physics , ferroelectricity , dielectric

Dynamic waveguides are induced beneath the surface of magnesium doped near-stoichiometric lithium tantalate by deep UV light at lambda = 257 nm using the interband photorefractive effect. The waveguides can be reconfigured in 10 ms at UV intensities of 100 mW/cm(2). We show the importance of the background illumination for the build-up of dynamic optical waveguides. We also present a new fixing process of the light-induced waveguide structures when the background light is absent. These quasi-fixed structures with dark decay times of several days are due to charges trapped in deep traps.

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