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

Yossef Kabessa, Amir Yativ, Har'el Ilan, Aharon J. Agranat

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

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/cm2 at λ = 445 nm input beam is demonstrated.

Original languageAmerican English
Pages (from-to)4348-4356
Number of pages9
JournalOptics Express
Volume23
Issue number4
DOIs
StatePublished - 23 Feb 2015

Bibliographical note

Publisher Copyright:
© 2015 Optical Society of America.

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