Ultrafast laser inscription of bistable and reversible waveguides in strontium barium niobate crystals

Jaque, D.; Psaila, N. D.; Thomson, R. R.; Chen, F.; Maestro, L. M.; Ródenas, A.; Reid, D. T.; Kar, A. K.
May 2010
Applied Physics Letters;5/10/2010, Vol. 96 Issue 19, p191104
Academic Journal
We report the fabrication of buried optical channel waveguides in strontium barium niobate nonlinear ferroelectric crystals by direct ultrafast laser inscription. These waveguides are strongly polarized and can be reversibly switched on and off by changing the temperature of the crystal, a characteristic we attribute to the bistable enhancement of the electro-optic coefficients at the ferro to paraelectric phase transition.


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