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Proceedings Paper

Large electro-optic coefficient observed in ion-exchanged potassium titanyl phosphate waveguides
Author(s): Yi Chiu; Daniel D. Stancil; Tuviah E. Schlesinger
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Paper Abstract

We report the observation of an anomalously large electro-optic coefficient in potassium titanyl phosphate (KTiOPO4, KTP) waveguides fabricated under various conditions. An interferometric method was used to measure the effective electro-optic coefficient r33 in the waveguides by measuring the phase retardation of an optical mode when a voltage is applied across the substrate. We observe that at low frequency the waveguide electro-optic coefficient can be higher than the bulk value by a factor up to about 100. Since KTP crystals are known to have a high concentration of mobile ions, a model relating the mobile charges, space charge fields, and observed enhancement in r33 is proposed to explain the mechanism of this effect. Possible device application and long term effects on system operation are also discussed.

Paper Details

Date Published: 10 May 1996
PDF: 6 pages
Proc. SPIE 2700, Nonlinear Frequency Generation and Conversion, (10 May 1996); doi: 10.1117/12.239648
Show Author Affiliations
Yi Chiu, Carnegie Mellon Univ. (United States)
Daniel D. Stancil, Carnegie Mellon Univ. (United States)
Tuviah E. Schlesinger, Carnegie Mellon Univ. (United States)

Published in SPIE Proceedings Vol. 2700:
Nonlinear Frequency Generation and Conversion
Mool C. Gupta; William J. Kozlovsky; David C. MacPherson, Editor(s)

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