Electro-optical modulation with immunity to optical damage by bipolar operation in potassium lithium tantalate niobate.

Author(s) Kabessa, Y.; Yativ, A.; Ilan, H.'el; Agranat, A.J.
Journal Opt Express
Date Published 2015 Feb 23

A method for suppressing the formation of optical damage in quadratic electrooptic devices operated at short wavelengths is presented. Formation of optical damage is attributed to the generation of a trapped space charge induced by photoionization of impurity ions by the propagating beam. It is shown that in potassium lithium tantalate niobate where the electrooptic effect is quadratic, operating the electrooptic device by a bipolar driving voltage prevents the space charge from accumulating, which inhibits the formation of the optical damage. A 6 hours continuous operation of electrooptic modulator for a 30 W/cm(2) at λ = 445 nm input beam is demonstrated.

DOI 10.1364/OE.23.004348
ISSN 1094-4087
Citation Opt Express. 2015;23(4):434856.

Related Applications, Forms & Industries