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Microwave Processing for Advance Electro-Optic Materials

Description: This project addressed the technical and scientific goals of developing new methods for the formation of striation-free single crystals of potassium tantalate niobate. This solid-solution system has the potential for serving as a general electro-optic material with a wide range of optical applications. The performance of the material is, however, severely limited by the effects of compositional inhomogeneity that is generally induced during the single crystal growth process due to the nature of… more
Date: June 1, 2000
Creator: Boatner, L. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transient Grating in a Knbo{Sub 3}/Ktao{Sub 3} Superlattice

Description: Time-resolved degenerate-four-wave-mixing (DFWM) techniques have been used to characterize the nonlinear optical response of a KNbO{sub 3}/KTaO{sub 3} superlattice grown by pulsed laser deposition on a 1 mm thick, (001)-oriented KTaO{sub 3} substrate. With a 30 psec pulsed laser, the difference in the nonlinear optical response between bulk KTaO{sub 3} and the superlattice was measured. Results indicate that a significant contribution to the response signal is due to the KNbO{sub 3} superlattic… more
Date: June 1, 1998
Creator: Liu, H.; Fernandez, F.; Jia, W. & Boatner, L. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of point defects and disorder on structural phase transitions

Description: Since the beginning in 1986, the object of this project has been Structural Phase Transitions (SPT) in real as opposed to ideal materials. The first stage of the study has been centered around the role of Point Defects in SPT`s. Our intent was to use the previous knowledge we had acquired in the study of point defects in non-transforming insulators and apply it to the study of point defects in insulators undergoing phase transitions. In non-transforming insulators, point defects, in low concent… more
Date: June 1, 1997
Creator: Toulouse, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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