摘要:
A process is disclosed of promoting the growth of crystalline bismuth mixed alkaline earth copper oxide grains in forming a conductive film by incorporating silver in the bismuth mixed alkaline earth copper oxide prior to sintering.
摘要:
A multilayer waveguide having an optical film of LiN.sub.b Ta.sub.1-x O.sub.3 formed on the surface of a buffer layer or substrate of material having a nearly identical lattice structure and substantially low refractive index.
摘要翻译:在具有几乎相同的晶格结构和基本上低折射率的材料的缓冲层或材料的表面上形成具有LiNbTa 1-x O 3的光学膜的多层波导。
摘要:
A multilayer structure comprising in order: a (111)-oriented single crystal substrate and an epitaxial metal oxide buffer layer. The substrate is doped or undoped. The substrate is a semiconductor selected from the group consisting of Si compounds, Ge compounds, and compounds having at least one element selected from the group consisting of Al, Ga, and In and at least one element selected from the group consisting of N, P, As, and Sb. The substrate defines a substrate superlattice dimension equal to 3 times a sublattice constant of the substrate. The epitaxial metal oxide buffer layer has a three-fold rotation symmetry about the substrate (111) direction. The buffer layer defines a buffer layer superlattice dimension equal to 4 times the oxygen-to-oxygen lattice spacing of the buffer layer. The buffer layer superlattice dimension is within 15 percent of the substrate superlattice dimension.
摘要:
A conductive film of crystalline bismuth mixed alkaline earth oxide containing silver is disclosed. A process for promoting the growth of crystalline bismuth mixed alkaline earth oxide grains by incorporating silver prior to sintering is also disclosed.
摘要:
A multilayer structure has an a nonlinear optical film epitaxially grown on an underlying buffer layer of substantially lower refractive index. The buffer layer itself is epitaxially grown on a single crystal substrate with an intermediate epitaxial electrode.
摘要:
Autostereoscopic images are produced by projecting a stereo pair of images onto a modified cube-corner retroreflective material. The cube-corner differs from that commonly available in that it has been altered to return the light to viewers eyes rather than directly back to the source of the projection.
摘要:
An optical, waveguide, quasi-phase-matching frequency converter has integral means to vary the efficiency of the quasi-phase-matching frequency conversion process resulting in intensity modulation of the device output; said frequency converter has integral means to optimize the quasi-phase-matching frequency conversion process resulting in optimum device output; and said frequency converter has integral input signal polarization mode conversion means in optional combination with the conversion optimization means for modulating the optimized device output. Methods for modulating and optimizing the quasi-phase-matching frequency converted signal by electro-optically controlling the dispersion of the frequency converting medium are also disclosed.
摘要:
A light modulator device for use in a light valve imaging system to image print media with different light colors comprising a panel of electro-optic material of the type which changes the polarization of transmitted light selectively upon application of an electric field and a plurality of electrode pairs, linearly spaced along the panel to define an array of modulator gap portions between respective electrode pairs. The modulator gap portions associated with different color filters have a different dimension selected respectively to effect maximum light transmission for different light colors under address by approximately the same voltage.
摘要:
A system for improving the uniformity of light valve imaging apparatus of the kind having an array of spaced light valve portions, a source for directing generally uniform illumination through the light valve portions, and means for scan-indexing the light valve image along an image zone. The improved system comprises source-scan means for scanning the source illumination onto the light valve array in synchronism with the scan-indexing of the light valve image.
摘要:
A frequency converter/mixer has a crystalline substrate which supports an inorganic, crystalline, nonlinear optical thin film having a higher index of refraction than the substrate, to form an optical waveguide. Input radiation of frequency .omega..sub.1 which enters the waveguide propagates through the waveguide and exits as radiation having a different frequency .omega..sub.2. The frequency conversion of the input radiation is accomplished by first-order quasi-phase-matching the input and output signals as a result of the periodicity of the sign-alternating nonlinear dielectric susceptibility coefficient of the optical thin film over an active region of the waveguide. A method of first-order quasi-phase-matching is also disclosed.