Transient grating in a KNbO{sub 3}/KTaO{sub 3} superlattice

Technical Report · Mon Jun 01 04:00:00 EDT 1998

DOI:https://doi.org/10.2172/658429· OSTI ID:658429

Liu, H; Fernandez, F; Jia, W ^[1]; Boatner, L A ^[2]

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1. Univ. of Puerto Rico, Mayaguez (Puerto Rico). Dept. of Physics
2. Oak Ridge National Lab., TN (United States). Solid State Div.

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} superlattice. The {chi}{sup (3)} value was estimated to have increased by 2 orders of magnitude compared to the bulk crystal.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: AC05-96OR22464
• OSTI ID: 658429
• Report Number(s): ORNL/CP--98324; CONF-980731--; ON: DE98005662; BR: KC0202020; CNN: Grant DE-FRO2-94ER757640; Grant US ARO DAAH04-96-10416; Grant NASA-URC NCCW-0088; Grant NSF EHR-9108775
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
EXPERIMENTAL DATA
HARMONIC GENERATION
NIOBATES
NONLINEAR OPTICS
OPTICAL PROPERTIES
POTASSIUM COMPOUNDS
SUPERLATTICES
TANTALATES