Journal ArticleDOI
An automated nondestructive characterization system for pyroelectric materials
TLDR
In this article, an automated system for the pyroelectric imaging of polar substrates has been developed, where the principle of operation, details of the optical and mechanical subsystems, and a description of the system hardware, interface, and software for data acquisition and display are given.Abstract:
An automated system for the pyroelectric imaging of polar substrates has been developed. The principle of operation, details of the optical and mechanical subsystems, and a description of the system hardware, interface, and software for data acquisition and display are given. The automation has made possible routine scans of high resolution and/or large areas of pyroelectric materials, such as LiNbO/sub 3/ and ZnO. Features of the system are highlighted by means of a pyroelectric imaging of proton-exchanged LiNbO/sub 3/, which is an important material for optical waveguides. >read more
Citations
More filters
Journal ArticleDOI
How to measure the pyroelectric coefficient
Sven Jachalke,Erik Mehner,Hartmut Stöcker,Juliane Hanzig,Maximilian Sonntag,Tina Weigel,Tilmann Leisegang,Tilmann Leisegang,Dirk C. Meyer +8 more
TL;DR: A summary of the variety of techniques to measure pyroelectric coefficient p is given in the present review as mentioned in this paper, which provides a classification after the thermal excitation and an outline of capabilities and drawbacks of individual techniques.
Journal ArticleDOI
Optical studies of ferroelectric and ferroelastic domain walls
Guillaume F. Nataf,Mael Guennou +1 more
TL;DR: It is shown that optical techniques, in spite of the diffraction limit, also provide key insights into the structure and physical properties of ferroelectric and ferroelastic domain walls.
Journal ArticleDOI
Polarization imaging in ferroelectric polymer thin film capacitors by pyroelectric scanning microscopy
TL;DR: In this article, a pyroelectric scanning microscopy system was used to image a bipolar domain pattern in a ferroelectric polymer thin film capacitor, which achieved a resolution of 660 nm by using a violet laser and high f-number microscope objective to reduce the optical spot size.
Journal ArticleDOI
Polarization patterning by laser-induced phase change in ferroelectric polymer films
TL;DR: Polarization patterns were written on ferroelectric poly(vinylidene-trifluoroethylene) copolymer Langmuir-Blodgett films by heating into the paraelectric phase by laser illumination using two methods as mentioned in this paper.
References
More filters
Journal ArticleDOI
Proton exchange for high‐index waveguides in LiNbO3
TL;DR: In this article, the fabrication and characterization of optical waveguides formed in LiNbO3 by proton exchange in benzoic acid melts at 200-250°C is described.
Journal ArticleDOI
Pyroelectric detectors and materials
TL;DR: A survey on point pyroelectric detectors and materials is given in this article, where the performance of a practical detector is characterized by the ratio of a response function and a noise function.
Journal ArticleDOI
Imaging with Optically Generated Thermal Waves
TL;DR: In this article, the question of whether a temperature periodicity in time is correlated with a periodicity along the z-coordinate is investigated. But it is difficult to imagine what a thermal wave could be characterized by a time and space periodicity, since it is not symmetrical with respect to time inversion.
Journal ArticleDOI
Pyroelectric imaging of defects in bulk acoustic wave lithium niobate transducers
TL;DR: In this article, a method for testing piezoelectric transducers made of a polar material is presented, which consists of measuring the voltage induced across the transducers electrodes by an intensity-modulated laser beam scanning the surface.