-
公开(公告)号：US07423265B2
公开(公告)日：2008-09-09
申请号：US11666063
申请日：2005-10-21
申请人： Joseph A. Matteo , Lambertus Hesselink , Yin Yuen
发明人： Joseph A. Matteo , Lambertus Hesselink , Yin Yuen
IPC分类号： G12B21/06
CPC分类号： H01Q1/36 , Y10S977/862
摘要： Near-field electromagnetic devices having an opaque metallic screen with a fractal iterate aperture are provided. More specifically, the aperture is obtained by application of a self-similar replacement rule to an initial shape two or more times. Alternatively, the aperture can be obtained by application of a self-similar replacement rule one or more times to an initial C-shape. Such apertures tend to have multiple transmission resonances due to their multiple length scales. Fractal iterate apertures can provide enhanced transmission and improved spatial resolution simultaneously. Enormous improvement in transmission efficiency is possible. In one example, a checkerboard fractal iterate aperture provides 1011 more intensity gain than a square aperture having the same spatial resolution. Efficient transmission for fractal iterate apertures having spatial resolution of λ/20 is also shown. The effect of screen thickness and composition can be included in detailed designs, but do not alter the basic advantages of improved transmission and spatial resolution provided by the invention.
摘要翻译： 提供具有分形迭代孔径的不透明金属屏幕的近场电磁装置。 更具体地，通过将自相似的替换规则应用于初始形状两次或更多次来获得孔径。 或者，可以通过将自相似替换规则一次或多次应用于初始C形来获得孔径。 这样的孔由于其多个长度尺度而倾向于具有多个传输谐振。 分形迭代孔径可以同时提供增强的传输和改进的空间分辨率。 传输效率的巨大提高是可能的。 在一个示例中，棋盘分形迭代孔径具有比具有相同空间分辨率的方形孔径更多的强度增益10 11。 还示出了具有λ/ 20的空间分辨率的分形迭代孔的有效传输。 屏幕厚度和组成的效果可以包括在详细的设计中，但不改变本发明提供的改进的传输和空间分辨率的基本优点。
-
52.发明授权Enhanced surface plasmon resonance sensor using Goos-Hänchen effect 有权使用Goos-Hänchen效应增强表面等离子体共振传感器公开(公告)号：US07327445B2
公开(公告)日：2008-02-05
申请号：US11480278
申请日：2006-06-30
申请人： Xiaobo Yin , Lambertus Hesselink
发明人： Xiaobo Yin , Lambertus Hesselink
IPC分类号： G01N21/41
CPC分类号： G01N21/553
摘要： An improved surface plasmon resonance (SPR) sensor is provided based on direct measurement of the Goos-Hänchen effect. Sensor sensitivity is enhanced by selecting the thickness of the metallic layer of the SPR sensor to be close to a critical thickness dcr where the effect of the surface plasmon resonance on the Goos-Hänchen shift is most pronounced. Overall sensor sensitivity is surprisingly found to improve with this approach, even though the measurement is based on a second order effect (i.e., the Goos-Hänchen shift) instead of the first order reflectance change measured in conventional SPR sensor approaches. The invention is also applicable to sensors based on measurements of other non-specular reflection parameters, such as temporal shifts, frequency shifts, and/or angular shifts.
摘要翻译： 基于Goos-Hänchen效应的直接测量，提供了改进的表面等离子体共振（SPR）传感器。 传感器灵敏度通过选择SPR传感器的金属层的厚度来接近临界厚度d 而增强，其中表面等离子体共振对Goos-Hänchen位移的影响最显着。 令人惊奇地发现，使用这种方法，总体传感器灵敏度可以改善，即使测量是基于二阶效应（即Goos-Hänchen移动）而不是在常规SPR传感器方法中测量的一阶反射率变化。 本发明还可应用于基于其他非镜面反射参数（诸如时间偏移，频移和/或角位移）的测量的传感器。
-
公开(公告)号：US07129006B2
公开(公告)日：2006-10-31
申请号：US10194448
申请日：2002-07-11
IPC分类号： G03H1/04
CPC分类号： B82Y10/00 , C01P2004/61 , C09C1/56 , G03F7/001 , G03H2001/303 , G03H2260/12 , G11B7/00455 , G11B7/0052 , G11B7/0065 , G11B7/24 , G11B7/26
摘要： An optical storage system and method having separate, independent format hologram writing and data writing mechanisms to allow optimization of data writing separately from format hologram recording. In its most general terms, the invention comprises an optical medium having a first, photoactive material responsive to a first, format hologram recording condition and a second photo-active material, responsive to a second, data writing condition, which is dispersed or dissolved in the first photoactive material. The second photoactive material may additionally be “erasable” under a third, erasing condition. The second photoactive material is preferably in the form of microparticles, microdroplets or microcapsules which are dispersed throughout the first photoactive material. The format hologram is recorded in the first photoactive material when the optical medium is subject to the first, format hologram recording condition, and the data writing is subsequently carried out separately, in connection with the second photoactive material, under the second, data writing condition. The separate format hologram recording and bit writing functions provided by the diferent conditions make them orthogonal.
摘要翻译： 一种光学存储系统和方法具有独立的独立格式全息图写入和数据写入机制，以允许与格式全息图记录分开的数据写入的优化。 在其最一般的术语中，本发明包括光学介质，其具有响应于第一格式全息图记录条件的第一光活性材料和第二光活性材料，响应于分散或溶解于其中的第二数据写入条件 第一种光敏材料。 在第三，擦除状态下，第二光敏材料可以另外为“可擦除”。 第二光活性材料优选为分散在整个第一光活性材料中的微粒，微滴或微胶囊的形式。 当光学介质经受第一格式全息图记录条件时，格式全息图被记录在第一光活性材料中，并且随后在第二个数据写入条件下与第二光敏材料相关地进行数据写入 。 由不同条件提供的单独格式全息图记录和位写入功能使它们正交。
-
公开(公告)号：US20050030993A1
公开(公告)日：2005-02-10
申请号：US10877220
申请日：2004-06-25
CPC分类号： H01S5/18391 , H01S5/18327 , H01S5/18338 , H01S5/18355 , H01S5/18375 , H01S5/18377 , H01S2301/18
摘要： A near field optical apparatus comprising a conductive sheet or plane having an aperture therein with the conductive plane including at least one protrusion which extends into the aperture. The location, structure and configuration of the protrusion or protrusions can be controlled to provide desired near field localization of optical power output associated with the aperture. Preferably, the location, structure and configuration of the protrusion are tailored to maximize near field localization at generally the center of the aperture. The aperture preferably has a perimeter dimension which is substantially resonant with the output wavelength of the light source, or is otherwise able to support a standing wave of significant amplitude. The apparatus may be embodied in a vertical cavity surface emitting layer or VCSEL having enhanced nearfield brightness by providing a conductive layer on the laser emission facet, with, a protrusion of the conductive layer extending into an aperture in the emission facet. The aperture in the emission facet preferably has dimensions smaller than the guide mode of the laser, and the aperture preferably defines different regions of reflectivity under the emission facet. The depth of the aperture can be etched to provide a particular target loss, and results in higher optical power extraction from the emission facet.
-
公开(公告)号：US06807131B1
公开(公告)日：2004-10-19
申请号：US09751301
申请日：2000-12-27
IPC分类号： G11B1112
CPC分类号： B82Y10/00 , G11B5/10 , G11B5/127 , G11B7/122 , G11B7/123 , G11B7/127 , G11B7/1387 , G11B9/1409 , G11B11/10506 , G11B11/10508 , G11B11/10532 , G11B11/10539 , G11B11/10554 , G11B11/1058 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： A hybrid magnetic-optical head apparatus wherein one or more solid state lasers, magnetic field biasing elements, magnetic sensing elements, and an aerodynamically shaped slider comprise a single integrated, monolithic device fabricated from the same base semiconductor material into an optical head. The monolithic optical head can be quickly and easily attached to the read arm of an optical read/write device without requiring attachment of separate laser and magnetic elements, and without micropositioning or use of optical microscopy for positioning the lasers or magnetic elements. The hybrid magnetic-optical head apparatus includes a magnetic-optical function region having a semiconductor laser and at least one magnetic element. Preferably, the magnetic-optical function region of the substrate includes a magnetic field biasing element associated with the semiconductor laser, as well as a magnetic sensing element. The slider portion of the magnetic optical head preferably includes an aerodynamically shaped air cavity as well as an air bearing surface, with the emission face of the laser preferably is substantially co-planar with the air bearing surface. The magnetic-optical function region may be configured for magnetically assisted thermal recording wherein writing is carried out primarily by laser power modulation to selectively heat portions of a medium, together with assistance of an applied magnetic field to establish a preferred direction of magnetization pattern in the medium. The magnetic-optical function region may alternatively be configured for thermally assisted magnetic writing wherein writing is carried out primarily by modulation of magnetic field, together with assistance of a laser which heats the medium to reduce the medium coercivity and thereby assist in the magnetic recording.
摘要翻译： 一种混合磁光头装置，其中一个或多个固态激光器，磁场偏置元件，磁感应元件和空气动力学形状的滑块包括由相同的基底半导体材料制成光学头的单个集成的单片器件。 单片光学头可以快速且容易地附接到光学读/写设备的读取臂，而不需要附加单独的激光和磁性元件，并且不需要微定位或使用光学显微镜来定位激光器或磁性元件。 混合磁光头装置包括具有半导体激光器和至少一个磁性元件的磁光功能区域。 优选地，基板的磁光功能区域包括与半导体激光器相关联的磁场偏置元件以及磁感应元件。 磁性光学头的滑块部分优选地包括空气动力学形状的空气腔以及空气支承表面，其中激光器的发射面优选地与空气轴承表面大致共面。 磁光功能区域可以被配置用于磁辅助热记录，其中主要通过激光功率调制执行写入，以选择性地加热介质的部分，同时借助所施加的磁场来建立磁化模式的优选方向 中。 可选地，磁光功能区域可以被配置用于热辅助磁写入，其中主要通过磁场的调制进行写入，以及加热介质以降低介质矫顽力从而辅助磁记录的激光器的辅助。
-
公开(公告)号：US06540397B2
公开(公告)日：2003-04-01
申请号：US09828693
申请日：2001-04-05
申请人： Jiro Yoshinari , Takuya Tsukagoshi , Hideki Hirata , Naoki Hayashida , Tokuyuki Honda , Mark E. McDonald , Michael V. Morelli , Andrew J. Daiber , Sanjoy Ghose , Lambertus Hesselink , Shunichi Nishimura , Sergei Sochava
发明人： Jiro Yoshinari , Takuya Tsukagoshi , Hideki Hirata , Naoki Hayashida , Tokuyuki Honda , Mark E. McDonald , Michael V. Morelli , Andrew J. Daiber , Sanjoy Ghose , Lambertus Hesselink , Shunichi Nishimura , Sergei Sochava
IPC分类号： G04B3700
CPC分类号： G11B7/0065 , G11B7/007 , G11B7/0938 , G11B7/24 , G11B7/243 , G11B7/244 , G11B7/2534 , G11B7/2595 , G11B2007/0013
摘要： An optical information medium comprising at least two data layers for bearing recorded information, and a servo layer for bearing tracking servo, information which is independently formed from the data layers; wherein the medium is used with a recording or reading system wherein a data beam for recording or reading the data in the data layer and a servo beam for reading the tracking servo information in the servo layer are used, and the servo layer is read by the servo beam that had passed through the data layer; and a filter layer is disposed between the data layer and the servo layer, and the filter layer exhibits higher absorption to the data beam than to the servo beam.
摘要翻译： 一种光信息介质，包括用于承载记录信息的至少两个数据层，以及用于承载跟踪伺服的伺服层，由数据层独立地形成的信息; 其中介质与记录或读取系统一起使用，其中使用用于记录或读取数据层中的数据的数据束和用于读取伺服层中的跟踪伺服信息的伺服光束，并且伺服层被读取 通过数据层的伺服光束; 并且在数据层和伺服层之间设置过滤层，并且过滤层对数据束的吸收比对伺服光束的吸收更高。
-
公开(公告)号：US06104511A
公开(公告)日：2000-08-15
申请号：US116291
申请日：1998-07-16
CPC分类号： G03H1/02 , G03H1/26 , G03H1/265 , G06K19/16 , G11C13/042 , G03H2001/0216 , G03H2223/24
摘要： The holographic storage and retrieval system according to the present invention comprises one convex reflector and one concave reflector having the same optical axis. The reflective surfaces of the two reflectors are opposite each other. The concave reflector is normally larger than the convex reflector. The holographic storage medium is positioned at the focal surface of the concave reflector. The spherical reflector system according to the present invention has nearly ideal performance off-axis: high bandwidth, low aberration imaging is permitted at a number of radial and axial locations. Thus, multiple SLM/CCD pairs can be placed off-axis to access the same storage medium and implement multiple interconnects.
摘要翻译： 根据本发明的全息存储和取回系统包括一个凸反射器和一个具有相同光轴的凹面反射器。 两个反射器的反射面彼此相对。 凹面反射器通常大于凸面反射器。 全息存储介质位于凹面反射体的焦面上。 根据本发明的球面反射器系统具有离轴几乎理想的性能：在多个径向和轴向位置允许高带宽，低像差成像。 因此，多个SLM / CCD对可以离轴放置以访问相同的存储介质并实现多个互连。
-
公开(公告)号：US6023355A
公开(公告)日：2000-02-08
申请号：US643062
申请日：1996-04-30
CPC分类号： G03H1/26 , G03H2001/2675
摘要： A method for coded-wavelength multiplexing according to which a signal waves S.sub.i (r) is recorded in a holographic medium in a counter-propagating geometry using corresponding writing reference waves R.sub.i (r). The method involves selecting discrete wavelengths .lambda. and encoding reference wave vectors .rho..sub.l which make up writing reference waves R.sub.i (r) such that the writing reference waves R.sub.i (r) at each wavelength .lambda. are orthogonal. The stored signal waves S.sub.i (r) are reconstructed in the form of reconstruction waves A.sub.c (.sigma.) with reconstruction reference waves R.sub.c (r) selected from among the writing reference waves R.sub.i (r). In the event of angular multiplexing of the reference wave vectors .rho..sub.l, it is possible to use one reference wave to produce a number of reconstruction waves A.sub.c (.sigma.) and generate a mosaic of desired holographic pages.
摘要翻译： 一种用于编码波长多路复用的方法，根据该方法，信号波Si（r）以相反的传播几何形状使用相应的写入基准波Ri（r）记录在全息介质中。 该方法包括选择离散波长λ和编码参考波矢量rho，其构成写入参考波Ri（r），使得每个波长λ处的写入基准波Ri（r）是正交的。 存储的信号波Si（r）以从写入基准波Ri（r）中选择的重建基准波Rc（r）的重构波Ac（sigma）的形式被重建。 在参考波矢量rho1的角度多路复用的情况下，可以使用一个参考波来产生多个重建波Ac（sigma）并产生期望的全息页的马赛克。
-
59.发明授权
公开(公告)号：US5740184A
公开(公告)日：1998-04-14
申请号：US625561
申请日：1996-04-01
IPC分类号： G11B7/0065 , G11B20/10 , G11C13/04 , H04L25/03
CPC分类号： G11B20/10009 , G11C13/042 , H04L25/03178 , G11B7/0065
摘要： Signal processing methods for addressing intersymbol interference in page-access optical memories such as holographic or two photon systems are disclosed. The invention takes advantage of the cartesian arrangement of data in page-access optical memories. A detector using the Viterbi algorithm is used to decode data row by row. Decision feedback is used in the direction perpendicular to the Viterbi direction. The use of data from previously decoded rows allows a reduction in the complexity of the Viterbi detector.
摘要翻译： 公开了用于寻址页访问光存储器（例如全息或双光子系统）中的符号间干扰的信号处理方法。 本发明利用页访问光存储器中的笛卡尔数据排列。 使用维特比算法的检测器用于逐行解码数据。 在垂直于维特比方向的方向上使用判定反馈。 使用来自先前解码的行的数据允许降低维特比检测器的复杂性。
-
60.发明授权Ion and impurity concentration optimization in photorefractive media for dynamic and fixed holography 失效用于动态和固定全息术的光折射介质中的离子和杂质浓度优化
公开(公告)号：US5729364A
公开(公告)日：1998-03-17
申请号：US676010
申请日：1996-07-05
CPC分类号： G03H1/02 , G11B7/0065 , G11B7/241 , G11B7/26 , G11C13/042 , G03H2001/026 , G03H2001/0268
摘要： Ionic and impurity concentrations in a photorefractive holographic storage medium are optimized such that electronic and ionic Debye numbers match an expected grating wave number K, at fixing and recording temperatures, respectively. Simultaneous and sequential recording and fixing are evaluated. The photovoltaic effect is reduced, subject to response time and absorption constraints, by matching reduced and oxidized impurity concentrations.
摘要翻译： 在光折射全息存储介质中的离子和杂质浓度被优化，使得电子和离子德拜号分别在定影和记录温度下与预期的光栅波数K相匹配。 同时进行连续记录和定影。 通过匹配减少和氧化的杂质浓度，光伏效应降低，受到响应时间和吸收约束。
-
-
-
-
-
-
-
-
-
搜索结果
79 条记录 (耗时 0.033 秒)
