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    Resonator mirror with a saturable absorber
    182.
    发明授权
    Resonator mirror with a saturable absorber 有权
    谐振器镜与饱和吸收器

    公开(公告)号：US06560268B1

    公开(公告)日：2003-05-06

    申请号：US09624633

    申请日：2000-07-24

    Applicant: Eckard Deichsel ,  Roland Jaeger ,  Peter Unger

    Inventor： Eckard Deichsel ,  Roland Jaeger ,  Peter Unger

    IPC: H01S308

    CPC classification number: B82Y20/00 ,  G02F1/3523 ,  G02F1/3556 ,  G02F2201/346 ,  G02F2202/108 ,  H01S3/08059 ,  H01S3/1118 ,  H01S3/113

    Abstract: A resonator mirror with a saturable absorber for a laser wavelength &lgr;L formed of a series of layers of a plurality of semiconductor layers on a substrate, wherein a Bragg reflector formed of a plurality of alternately arranged layers comprising a first material with an index of refraction nH and a second material with a lower index of refraction NL compared with the latter is grown on a surface of the substrate. It is characterized in that a threefold layer is grown on the Bragg reflector, wherein a single quantum layer is embedded within two layers outside an intensity minimum for the laser radiation &lgr;L and the threefold layer has a combined optical thickness of λ L 2 .

    Abstract translation: 一种具有用于由衬底上的多个半导体层的一系列层形成的用于激光波长的可饱和吸收体的谐振镜，其中由多个交替布置的层形成的布拉格反射器包括折射率nH的第一材料 并且在衬底的表面上生长具有比后者折射率低的第二材料NL。 其特征在于，在布拉格反射器上生长三层，其中单个量子层嵌入在用于激光辐射lambdL的强度最小值之外的两层内，并且三层具有组合的光学厚度

    Holographic projection system
    185.
    发明授权
    Holographic projection system 失效
    全息投影系统

    公开(公告)号：US06211976B1

    公开(公告)日：2001-04-03

    申请号：US09607432

    申请日：2000-06-30

    Applicant: Milan M. Popovich ,  Jonathan D. Waldern ,  John J. Storey

    Inventor： Milan M. Popovich ,  Jonathan D. Waldern ,  John J. Storey

    IPC: G02B532

    CPC classification number: G02F1/133621 ,  G02B5/32 ,  G02F1/13342 ,  G02F1/13473 ,  G02F1/292 ,  G02F2001/133622 ,  G02F2001/291 ,  G02F2201/346 ,  G03H1/26

    Abstract: Holographic optical elements (HOEs) can be used in systems and methods for providing illumination and for projecting images. The HOEs may be switchable HOEs, whose diffractive properties can be controlled. Described herein is a method of combining light from two or more illumination sources. In one embodiment, a reflection-type HOE is illuminated by the first illumination source. The HOE diffracts light from the first illumination source into an output direction. Light from the second illumination source is transmitted through the HOE and onto a reflective optical element, which reflects the light back through the HOE and into the same output direction. Also described is a projection system that uses two or more HOEs to combine two or more colors of light for use by a single image display. The system includes one or more light sources, an image display (such as a reflective or transmissive LCD display or a MEMS display, for example), and a first and a second HOE. The HOEs are each mounted between a light source and the image display, and configured to provide one color of light to the image display and from the image display into an output direction. In one embodiment, the HOEs are switchable HOEs and can be used for color-sequential display and/or for color balancing.

    Abstract translation: 全息光学元件（HOE）可用于提供照明和投影图像的系统和方法中。 HOE可以是可切换的HOE，其可以控制其衍射性质。 这里描述的是组合来自两个或更多个照明源的光的方法。 在一个实施例中，反射型HOE由第一照明光源照亮。 HOE将来自第一照明源的光衍射成输出方向。 来自第二照明源的光通过HOE透射到反射光学元件上，反射光学元件将光反射通过HOE并进入相同的输出方向。 还描述了一种投影系统，其使用两个或更多个HOE来组合用于单个图像显示器的两种或更多种颜色的光。 该系统包括一个或多个光源，图像显示器（例如反射或透射LCD显示器或MEMS显示器），以及第一和第二HOE。 HOE各自安装在光源和图像显示器之间，并且被配置为向图像显示器提供一种颜色的光并且将图像显示器从图像显示器提供到输出方向。 在一个实施例中，HOE是可切换的HOE，并且可以用于颜色顺序显示和/或用于颜色平衡。

    Electrically switchable optical grating having DFB laser properties, a DFB laser containing same, and a production method therefor
    189.
    发明公开
    Electrically switchable optical grating having DFB laser properties, a DFB laser containing same, and a production method therefor 审中-公开
    电可切换光学光栅DFB激光器的特性，这种全面DFB激光器，及其制造方法

    公开(公告)号：EP2187254A1

    公开(公告)日：2010-05-19

    申请号：EP08169354.1

    申请日：2008-11-18

    Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

    Inventor： Sakhno, Oksana ,  Stumpe, Joachim ,  Schrader, Sigurd ,  Ksianzou, Viachaslau

    IPC: G02F1/1334 ,  H01S3/063 ,  H01S3/213

    CPC classification number: G02F1/13342 ,  G02F1/13762 ,  G02F2201/305 ,  G02F2201/346 ,  H01S3/1686

    Abstract: The present invention is directed to a structure, having first areas consisting of or comprising a network of organic polymer material and second areas consisting of a nematic and/or smectic liquid crystal material, comprising at least one or more nematic and/or smectic liquid crystals and a photoluminescent material, wherein the first and second areas alternate in at least a first plane, while the composition of the film is substantially invariable in at least one direction which is angular to the said first plane, or second areas are completely surrounded by first areas, and the said areas are located in a periodic pattern, wherein the nematic and/or smectic liquid crystal material in the second areas extends in the longitudinal direction of the said areas from one end of the area to the other, the structure being arranged between two substrates, at least one of which is light transmitting. The structure together with the substrates may be a Bragg grating and can be used as a DFB laser. It can be prepared by providing a homogeneous and isotropic mixture including a photocurable monomer/oligomer, a nematic and/or smectic liquid crystal, and a photoluminescent material, filling said mixture into the space between two substrates and irradiating same with a light field such that areas of the mixture are irradiated while others are not. Under the irradiation, the mixture separates into areas comprising photocured polymer and areas consisting or comprising liquid crystals and photoluminescent material.

    Abstract translation: 本发明涉及一种结构，其具有第一区域组成或包含有机聚合物材料和第二区域组成的向列型和/或近晶相液晶材料的一个网络，包括至少一个或更多个向列型和/或近晶状液晶 和光致发光材料，worin所述第一和第二区域交替地切换在至少一个第一平面上，而该膜的组合物是在至少一个方向上的所有其角与所述第一平面基本上不变，或第二区域完全呼叫由第一包围 区域，并且所述区域是位于周期性图案，worin在第二区域的向列型和/或近晶相液晶材料的所述区域的从区域到另一个的一端的纵向方向延伸，所述结构被布置 之间的两个基板，所有这是光发射的至少一个。 与基板一起的结构可以是一个布喇格光栅，并且可以被用作DFB激光器。 它可以通过确实提供均匀的和各向同性的混合物，包括可光固化的单体/低聚物，向列型和/或近晶相液晶，和光致发光材料，所述混合物填充到空间之间的两个基板和照射相同与光场调查来制备 混合物的区域进行照射，而有些则没有。 下照射，将混合物分离成包含光固化的聚合物区和区域由或包括液晶和光致发光材料。

    WIDELY WAVELENGTH TUNEABLE POLYCHROME COLLOIDAL PHOTONIC CRYSTAL DEVICE
    190.
    发明授权
    WIDELY WAVELENGTH TUNEABLE POLYCHROME COLLOIDAL PHOTONIC CRYSTAL DEVICE 有权
    波长可调多彩多姿的胶体光子晶体器件

    公开(公告)号：EP1549995B1

    公开(公告)日：2009-04-22

    申请号：EP03757572.7

    申请日：2003-10-09

    Applicant: Arsenault, Andre ,  Miguez, Hernan ,  Ozin, Geoffrey Alan ,  Manners, Ian

    Inventor： Arsenault, Andre ,  Miguez, Hernan ,  Ozin, Geoffrey Alan ,  Manners, Ian

    IPC: G02F1/01

    CPC classification number: B82Y20/00 ,  C09K2019/0496 ,  G02B6/1225 ,  G02F1/01 ,  G02F1/19 ,  G02F1/21 ,  G02F2201/305 ,  G02F2201/346 ,  G02F2202/022 ,  G02F2202/32 ,  G02F2203/055 ,  Y10T428/1023

    Abstract: The present invention discloses a widely wavelength tunable polychrome colloidal photonic crystal device whose optical Bragg diffraction stop bands and higher energy bands wavelength, width and intensity can be tuned in a continuous and fine, rapid and reversible, reproducible and predictable fashion and over a broad spectral range by a controlled expansion or contraction of the colloidal photonic lattice dimension, effected by a predetermined change in the electronic configuration of the composite material. In its preferred embodiment, the material is a composite in the form of a film or a patterned film or shape of any dimension or array of shapes of any dimension comprised of an organized array of microspheres in a matrix of a cross-linked metallopolymer network with a continuously variable redox state of charge and fluid content. The chemo-mechanical and electro-mechanical optical response of the colloidal photonic crystal-metallopolymer gel is exceptionally fast and reversible, attaining its fully swollen state from the dry shrunken state and vice versa on a sub-second time-scale. These composite materials can be inverted by removal of the constituent microspheres from the aforementioned colloidal photonic crystal metallopolymer-gel network to create a macroporous metallopolymer-gel network inverse colloidal photonic crystal film or patterned film or shape of any dimension optical Bragg diffraction stop bands and higher energy bands wavelength, width and intensity can be redox tuned in a continuous and fine, rapid and reversible, reproducible and predictable fashion and over a broad spectral range by a controlled expansion or contraction of the colloidal photonic lattice dimensions.

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