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Article
Nonlinear dynamics with higher-order modes in lithium niobate waveguide arrays
We present theoretical and experimental studies on nonlinear beam propagation in lithium niobate waveguide arrays utilizing higher-order second harmonic bands. We find that the implementation of the higher-ord...
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Article
Electrode-free optical sensor for high voltage using a domain-inverted LiNbO3 waveguide near cut-off
We present a novel all-optical electric field sensor based on a proton-exchange waveguide near cut-off, centered on a few microns wide domain-inverted region in a z-cut LiNbO3 substrate. The output intensity from...
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Article
Low-loss ridge waveguides on lithium niobate fabricated by local diffusion do** with titanium
The development of a novel self-aligned photolithographic process is reported enabling selective Ti-deposition on the surface of wet etched ridges on lithium niobate. Thus local diffusion do** of the ridges ...
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Chapter and Conference Paper
Mid-Infrared Integrated Optical Parametric Generators and Oscillators with Periodically Poled Ti:LiNbO3 Waveguides
The state of the art of quasi phase matched integrated optical parametric generators and oscillators is reviewed. The core of these devices is a periodically poled Ti:LiNbO3 waveguide of propagation losses dow...
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Article
Strong two-body decays of light mesons
In this paper, we present results on strong two-body decay widths of light \(q\bar q\) mesons calculated in a covariant quark model. The model is based on the Bethe-Salpeter equa...
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Article
Weak decays of heavy mesons in a covariant quark model
In this paper we investigate weak decays of heavy mesons in the framework of a covariant quark model, which is based on the Bethe-Salpeter equation in instantaneous approximation. Apart from a phenomenological...
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Article
Efficient cascaded difference frequency conversion in periodically poled Ti:LiNbO3 waveguides using pulsed and cw pum**
Using an FM-mode-locked Ti:Er:LiNbO3 waveguide laser as the fundamental source, wavelength conversion by cascaded χ(2):χ(2)-difference frequency generation with a conversion efficiency of up to +3(-4.6) dB was de...
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Article
The meson spectrum in a covariant quark model
Within the framework of the instantaneous Bethe-Salpeter equation, we present a detailed analysis of light meson spectra with respect to various parameterizations of confinement in Dirac space. Assuming a line...
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Article
A relativistic quark model for mesons with an instanton-induced interaction
We present new results of a relativistic quark model based on the Bethe-Salpeter equation in its instantaneous approximation. Assuming a linearly rising confinement potential with an appropriate spinorial stru...
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Chapter and Conference Paper
Integrated Acousto-Optical Heterodyne Interferometers in LiNbO3
Integrated optical heterodyne interferometers in X-cut LiNbO3 have been developed for applications in metrology and vibration analysis. They combine 7 or 9 devices, respectively, on a single chip. 75 dB signal-to...