Periodic domain inversion in Z-cut LiTaO3 by electron beam scanning assisted by an internal field within the crystal

1996 ◽  
Author(s):  
Venkatraman Gopalan ◽  
Alan C. G. Nutt ◽  
Mool C. Gupta
Keyword(s):  
Electron Beam ◽  
Internal Field ◽  
Periodic Domain ◽  
Beam Scanning ◽  
Domain Inversion ◽  
Periodic Domain Inversion

Observation of Periodic Domain Inversion in Periodically Poled LiNbO3 by High-Resolution Topography

1996 ◽  
Vol 29 (3) ◽  
pp. 279-284 ◽  
Author(s):  
Z. W. Hu ◽  
P. A. Thomas ◽  
J. Webjörn
Keyword(s):  
High Resolution ◽  
Structural Model ◽  
Domain Walls ◽  
Periodic Pattern ◽  
Periodic Domain ◽  
Periodically Poled ◽  
Diffraction Mode ◽  
Linear Contrast ◽  
Domain Inversion ◽  
Periodic Domain Inversion

Periodic domain inversion in an electric field poled LiNbO3 crystal has been studied using high-resolution multiple-crystal multiple-reflection X-ray diffraction topography. Fine linear contrast with spacings that correspond to the lateral dimensions of the periodic pattern has been observed by the choice of an appropriate diffraction mode to provide high spatial resolution and is shown to arise essentially from strains at the domain walls. The origin of the strain contrast at the domain walls is suggested primarily to be the result of the domain-inversion processing via the converse piezeoelectric effect. A structural model for the domain inversion that is based on a pseudosymmetry argument is invoked in order to quantify the ionic displacements for twinning. These results are compared with those obtained in a previous study employing a different diffraction mode [Hu, Thomas & Webjörn (1995). J. Phys. D, 28, A189–A194].

Periodic domain inversion in x-cut single-crystal lithium niobate thin film

2016 ◽  
Vol 108 (15) ◽  
pp. 152902 ◽  
Author(s):  
P. Mackwitz ◽  
M. Rüsing ◽  
G. Berth ◽  
A. Widhalm ◽  
K. Müller ◽  
...  
Keyword(s):  
Thin Film ◽  
Lithium Niobate ◽  
Single Crystal ◽  
Periodic Domain ◽  
Domain Inversion ◽  
Periodic Domain Inversion

First Order Quasi-Phase-Matched Second-Harmonic Generation in LiTaO3 Utilizing a Periodic Domain Inversion Created by an External Stress

1993 ◽  
Vol 329 ◽  
Author(s):  
Thomas A. Strasser ◽  
Rishi Raj
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Phase Match ◽  
Periodic Domain ◽  
Quasi Phase Match ◽  
First Order ◽  
Generation Structure ◽  
Domain Inversion ◽  
Periodic Domain Inversion

AbstractFirst order quasi-phase-matching in a proton exchanged LiTaO3 channel waveguide structure is reported, where the periodic domain inversion is created by the application of a periodic compressive stress near the Curie temperature. The processing conditions, driving force, and effects on resulting domain structure is reported, including the observation of domain structures with periods as small as 0.36 μm. A waveguide second-harmonic generation structure with a periodic 3.45 μm domain inversion structure is fabricated and evaluated to quasi-phase-match 420 nm blue light with 840 nm output available from standard laser diode sources.

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