Epitaxial Niobate Thin Films and Their Nonlinear Optical Properties

1995 ◽  
Vol 401 ◽  
Author(s):  
B. W. Wessels ◽  
M. J. Nystrom ◽  
J. Chen ◽  
D. Studebaker ◽  
T. J. Marks
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Nonlinear Optical ◽  
Chemical Vapor ◽  
Nonlinear Optical Properties ◽  
Organic Chemical ◽  
Epitaxial Thin Films ◽  
Non Linear ◽  
Metal Organic ◽  
Linear Optical

AbstractFerroelectric oxide thin films show considerable potential as electro-optic and non-linear optical materials. Of particular interest are the niobates such as strontium barium niobate and potassium niobate. The growth of these epitaxial oxide films by metal-organic chemical vapor deposition (MOCVD) has been investigated. This technique has yielded epitaxial thin films with excellent non-linear optical properties. Issues concerning the epitaxy of these thin films and its relationship to their optical and nonlinear optical properties are discussed.

Deposition of Strontium Barium Niobate Thin Films by Metal-Organic Chemical Vapor Deposition and Their Nonlinear Optical Properties

1994 ◽  
Vol 361 ◽  
Author(s):  
M.J. Nystrom ◽  
B.W. Wessels ◽  
D.A. Neumayer ◽  
T.J. Marks ◽  
W.P. Lin ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Vapor Deposition ◽  
Nonlinear Optical ◽  
Nonlinear Coefficient ◽  
Chemical Vapor ◽  
Organic Chemical ◽  
Strontium Barium ◽  
Metal Organic ◽  
Organic Chemical Vapor Deposition

ABSTRACTSingle phase, highly textured strontium barium niobate (SBN) thin films were deposited by low pressure metal-organic chemical vapor deposition on both crystalline and amorphous substrates. The metal precursors employed were niobium pentaethoxide as well as barium and strontium (hexafluoroacetylacetonate)2•tetraglyme. SBN thin films with compositions across the entire solid solution range were deposited. The nonlinear optical properties of the SBN films were also measured. Nonlinear optical coefficients approaching bulk values were obtained for as-deposited oriented films. The room temperature, effective second-order nonlinear coefficient was 3.0 pm/V. Films with the highest degree of crystalline perfection had the largest effective nonlinear coefficient. The second harmonic intensity was strongly temperature dependent with a maximum at the ferroelectric transition.

Epitaxial Ferroelectric Oxides for Electro-Optic and Non-Linear Optical Applications

1997 ◽  
Vol 495 ◽  
Author(s):  
B. W. Wessels
Keyword(s):  
Thin Films ◽  
Chemical Vapor ◽  
Optical Quality ◽  
Guided Wave ◽  
Epitaxial Thin Films ◽  
Electro Optic ◽  
Non Linear ◽  
Linear Optical ◽  
Optical Applications ◽  
Ferroelectric Oxides

ABSTRACTFerroelectric oxide epitaxial thin films are potentially important for a variety of guided-wave electro-optic and non-linear optical applications. Metalorganic chemical vapor deposition has been used to synthesize epitaxial thin films of a number of ferroelectric oxides. The films now have sufficient optical quality to enable the fabrication of waveguide devices including electro-optic modulators and optical amplifiers for 1.54 microns.

A supra-molecular switchable dielectric material with non-linear optical properties

2017 ◽  
Vol 5 (11) ◽  
pp. 2865-2870 ◽  
Author(s):  
Tariq Khan ◽  
Muhammad Adnan Asghar ◽  
Zhihua Sun ◽  
Aurang Zeb ◽  
Chengmin Ji ◽  
...  
Keyword(s):  
Optical Properties ◽  
Molecular Crystal ◽  
Nonlinear Optical ◽  
Dielectric Material ◽  
Nonlinear Optical Properties ◽  
Optical Material ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Linear Optical

A supra-molecular crystal, 1-[C6H13NH][18-crown-6][ClO4] monohydrate, has been reported to show reversible dielectric anomalies and nonlinear optical properties, which suggests that it could be conceived as the potential switchable dielectric and non-linear optical material.

Pinning of 90° domain boundaries at interface dislocations in BaTiO3/LaAIO3 {100}

1996 ◽  
Vol 54 ◽  
pp. 124-125
Author(s):  
Z.-R. Dai ◽  
Z.L. Wang ◽  
X.F. Duan ◽  
J. Zhang
Keyword(s):  
Thin Films ◽  
Chemical Vapor ◽  
Organic Chemical ◽  
Epitaxial Thin Films ◽  
Transmission Electron ◽  
Domain Boundaries ◽  
Potential Applications ◽  
Metal Organic ◽  
Organic Chemical Vapor Deposition

Epitaxially grown BaTiO3 thin films have potential applications in microelectronics and integrated photonics. The ferroelectric property of this material is largely determined by the domain structure. It is believed that the structure of the substrate would have profound effect on the quality of BaTiO3 epitaxial thin films. This paper reports our studies on the pinning of 90° domain boundaries at interface dislocations.Epitaxial BaTiO3 thin films were deposited on single crystalline LaAIO3 (100) substrates at 800°C by metal-organic chemical vapor deposition (MOCVD). Cross-section specimens of the films were studied at 200 kV using an JEOL 2010 high-resolution transmission electron microscope (HRTEM).

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