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

1997 ◽  
Vol 495 ◽  
Author(s):  
B. W. Wessels

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.

1995 ◽  
Vol 401 ◽  
Author(s):  
B. W. Wessels ◽  
M. J. Nystrom ◽  
J. Chen ◽  
D. Studebaker ◽  
T. J. Marks

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.


2015 ◽  
Vol 336 ◽  
pp. 200-205 ◽  
Author(s):  
Andreea Matei ◽  
Catalin Constantinescu ◽  
Bogdana Mitu ◽  
Mihaela Filipescu ◽  
Valentin Ion ◽  
...  

2014 ◽  
Vol 302 ◽  
pp. 83-86 ◽  
Author(s):  
Catalin Constantinescu ◽  
Andreea Matei ◽  
Valentin Ion ◽  
Bogdana Mitu ◽  
Iulian Ionita ◽  
...  

1990 ◽  
Vol 200 ◽  
Author(s):  
A. Y. Wu ◽  
Feiling Wang ◽  
Ching-Bo Juang ◽  
Carlos Bustamante

ABSTRACTThe electro-optic properties of sputter-deposited PLZT, BaTiO3, SBN, and BNN films on fused silica substrates have been studied using a confocal scanning optical polarization microscope. The Pockels, Kerr, and higher order electro-optic coefficients and their relations to the non-linear optical coefficients in the films are presented. The materials and physical properties of the films are discussed.


2015 ◽  
Vol 36 ◽  
pp. 78-83 ◽  
Author(s):  
Valentin Ion ◽  
Andreea Matei ◽  
Catalin Constantinescu ◽  
Iulian Ionita ◽  
Maria Marinescu ◽  
...  

2016 ◽  
Vol 7 (1) ◽  
pp. 62 ◽  
Author(s):  
Seol Hee Oh ◽  
Hae-Young Shin ◽  
Seokhyun Yoon ◽  
Jai Seok Ahn ◽  
Janghwan Cha ◽  
...  

1998 ◽  
Vol 51 (9) ◽  
pp. 813 ◽  
Author(s):  
Daniel E. Lynch ◽  
Niraj Mistry ◽  
Graham Smith ◽  
Karl A. Byriel ◽  
Colin H. L. Kennard

The molecular adducts of indole-3-acetic acid (iaa) and indole-2-carboxylic acid (ica) with 5-nitroquinoline (nq), [(iaa)(nq)2] (1) and [(ica)(nq)] (2), have been prepared and characterized by X-ray diffraction and spectroscopic methods. Both examples involve charge transfer as well as a network of hydrogen-bonding interactions. Thin films of compound (2), and other similar adduct complexes of ica, can be prepared by thermal evaporation techniques and in this form exhibit a weak second-order non-linear optical signal. However, these films display poor optical quality and, without improvement, are not suitable for any potential non-linear optical applications.


2014 ◽  
Vol 302 ◽  
pp. 69-73 ◽  
Author(s):  
C. Constantinescu ◽  
A. Matei ◽  
I. Ionita ◽  
V. Ion ◽  
V. Marascu ◽  
...  

1995 ◽  
Vol 415 ◽  
Author(s):  
B. A. Block ◽  
B. W. Wessels

ABSTRACTEr-doped BaTiO3 thin films have been investigated as a candidate for an optically active waveguide medium. Epitaxial layers were prepared by metal-organic chemical vapor deposition at low pressure. The properties of the characteristic Er3+ luminescence transition at 0.8 eV have been investigated for epitaxial Er doped BaTiO3 thin films for various Er concentrations. The photoluminescent intensity was found to increase by a factor greater than 500 when the doping level was increased from 1 × 1020 cm−3 to 2.2 × 1021cm−3, indicating that concentration quenching was not significant at the highest doping levels. A complex emission spectra was observed and was attributed to the multi-site substitution of Er in BaTiO3. Transient decay measurements revealed a 7 ms radiative lifetime for the 0.80 eV transition that was independent of concentration.


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