公开(公告)号：US20020159487A1

公开(公告)日：2002-10-31

申请号：US09910538

申请日：2001-07-20

申请人： Siros Technologies, Inc.

发明人： Robert Thornton ,  John Epler ,  Doug Stinson

IPC分类号： H01S003/098 ,  H01S003/10 ,  H01S003/08

CPC分类号： H01S5/183 ,  H01S3/08004 ,  H01S5/0057 ,  H01S5/041 ,  H01S5/0657 ,  H01S5/141 ,  H01S5/142 ,  H01S5/18302

摘要： A light source is disclosed for use optical communications systems. In one aspect, a gain region defined by a first and second mirror is provided having a corresponding resonant mode, and an external cavity defined by a third mirror and the second mirror is also provided having a plurality of resonant modes. The second mirror is configured such that one of the external cavity resonant modes is selected. The single channel laser has wavelength precision sufficient to eliminate the need for an external wavelocker, and has an external cavity capable of being directly modulated in a chirp-free manner.

摘要翻译： 公开了一种用于光通信系统的光源。 一方面，由第一和第二反射镜限定的增益区域具有相应的谐振模式，并且由第三反射镜和第二反射镜限定的外部空腔也被设置成具有多个谐振模式。 第二镜被配置为使得选择外腔谐振模式中的一个。 单通道激光器具有足够的波长精度以消除对外部波形锁定器的需要，并且具有能够以无啁啾方式直接调制的外部空腔。

公开(公告)号：US6091549A

公开(公告)日：2000-07-18

申请号：US59868

申请日：1998-04-14

申请人： Mark E. McDonald ,  Andrew J. Daiber

发明人： Mark E. McDonald ,  Andrew J. Daiber

IPC分类号： G02B27/00 ,  G11B7/135 ,  G02B27/14 ,  G02B3/02

CPC分类号： G11B7/1374 ,  G02B27/0068 ,  G11B7/13925 ,  G11B2007/13727

摘要： Two lenses separated by an air gap provide spherical aberration compensation and focusing of a light beam to a focal point inside a data storage medium. The thickness of the air gap determines the amount of spherical aberration compensation provided. The distance between the lens pair and storage medium determines the depth of the focal point within the storage medium. The internal surfaces of the lenses which define the air gap are preferably planar. The external surfaces of the lenses are aspheric to provide accurate focusing and positive spherical aberration. The air gap between the lenses may also be formed by curved internal surfaces, in which case it is best for the focus lens to have a concave internal surface. The apparatus and method of the present invention reduces the number of optical components required for an optical data reading/writing device.

摘要翻译： 由气隙分开的两个透镜提供球面像差补偿并将光束聚焦到数据存储介质内的焦点。 气隙的厚度决定了球面像差补偿量。 透镜对和存储介质之间的距离确定存储介质内焦点的深度。 限定气隙的透镜的内表面优选是平面的。 透镜的外表面是非球面的，以提供精确的聚焦和正的球面像差。 透镜之间的空气间隙也可以由弯曲的内表面形成，在这种情况下，聚焦透镜最好具有凹的内表面。 本发明的装置和方法减少了光学数据读/写装置所需的光学部件的数量。

公开(公告)号：US20040008605A1

公开(公告)日：2004-01-15

申请号：US10131531

申请日：2002-04-23

申请人： Siros Technologies, Inc., a California Corporation

发明人： Robert L. Thornton ,  Douglas G. Stinson ,  Roger K. Malmhall ,  Mathew C. Bashaw

IPC分类号： G11B007/00 ,  G11B007/135 ,  G11B015/64 ,  G11B017/32

CPC分类号： H01S5/18311 ,  G11B7/122 ,  G11B7/22 ,  H01S5/02276 ,  H01S5/02284 ,  H01S5/0261 ,  H01S5/0425 ,  H01S2301/176

摘要： A near-field optical system having one or more solid state lasers and an aerodynamically shaped slider which comprise a single integrated, monolithic device fabricated from the same base semiconductor material. 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 elements, and without micropositioning or use of optical microscopy for positioning the lasers. The optical head comprising a single semiconductor substrate including a first region which defines a slider having an air bearing surface, and at least one second, laser region which defines a diode laser, with the diode laser having an emission face which is substantially co-planar with the air bearing surface. The semiconductor substrate preferably includes an active layer, a p-clad layer or reflective layer adjacent a first side of the active region, an n-clad layer or reflective layer adjacent a second side of the active layer, and an n-semiconductor layer adjacent the n-clad layer. A slider region of the semiconductor substrate includes an air bearing surface, adjacent the p-clad layer, which is aerodynamically structured and configured to define a slider. The integral lasers include a p-electrical contact adjacent to the p-clad layer and proximate to the laser emission face, and an n-electrical contact adjacent to the n-clad layer or an n-semiconductor layer. The laser mode is defined by oxidized or ion-diffusion regions associated with the p-clad layer or n-clad layer of the laser. A conductive via through the substrate allows electrical connection with the p-side contact to be achieved from the n-side of the substrate. The optical head is used in a near-field optical system with an optical medium having a phase change layer.

摘要翻译： 具有一个或多个固态激光器和空气动力学形状的滑块的近场光学系统，其包括由相同的基底半导体材料制造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元件，并且不需要定位微距定位或使用光学显微镜来定位激光器。 该光学头包括单个半导体衬底，该半导体衬底包括限定具有空气支承表面的滑块的第一区域和限定二极管激光器的至少一个第二激光区域，二极管激光器具有基本共面的发射面 与空气轴承表面。 半导体衬底优选地包括有源层，邻近有源区的第一侧的p覆盖层或反射层，邻近有源层的第二侧的n包层或反射层以及邻近的n半导体层 n覆层。 半导体衬底的滑块区域包括邻近p覆盖层的空气支承表面，其空气动力学构造并构造成限定滑块。 整体激光器包括邻近p覆盖层并且靠近激光发射面的p电接触以及与n包覆层或n半导体层相邻的n电接触。 激光模式由与激光的p包覆层或n包覆层相关联的氧化或离子扩散区域限定。 通过基板的导电通孔允许从基板的n侧实现与p侧接触的电连接。 光头用于具有相变层的光学介质的近场光学系统中。

公开(公告)号：US6147782A

公开(公告)日：2000-11-14

申请号：US071478

申请日：1998-05-01

申请人： Andrew J. Daiber ,  Mark E. McDonald

发明人： Andrew J. Daiber ,  Mark E. McDonald

IPC分类号： G03H1/30 ,  G11B7/0065 ,  G11B7/135 ,  G03H1/00

CPC分类号： G03H1/30 ,  G11B7/0065 ,  G11B7/1362 ,  G11B7/13927 ,  G03H2001/0417 ,  G03H2222/31 ,  G03H2230/10

摘要： A positive unit magnification reflective head is used to back-reflect a primary light beam, for storing reflection microholograms at the coincident foci of the primary and reflected beams. Imaging the primary beam focus onto itself at positive unit magnification allows increasing system tolerance to tilts and transverse misalignments between the primary and reflective heads. Holograms are stored at multiple depths in a holographic storage medium. Tunable-focus primary and reflective heads are positioned on opposite sides of the storage medium. The reflective head images each storage location onto itself at positive unit magnification. Suitable reflective heads include: two lenses in an f-2f-f configuration and a planar mirror; a lens and a corner cube; a thin lens and a thick lens with a coated reflective back surface; and a thin lens and a back-coated gradient-index (GRIN) lens. To control the polarization of the reflected beam, the corner cube may include a plastic filler bonded on the back of the reflective surface. The filler index of refraction is chosen such that the primary beam is incident on the reflective surface of the corner cube at the critical angle.

摘要翻译： 正单位放大率反射头用于反射一次光束，用于在初级和反射光束的重合焦点处存储反射微波照相。 将主光束聚焦以正单位放大率成像，可以增加系统对初级和反射头之间的倾斜和横向不对准的容差。 全息图存储在全息存储介质中的多个深度处。 可调聚焦主反射头位于存储介质的相对侧。 反射头以正单位放大率将每个存储位置映射到自身上。 合适的反射头包括：f-2f-f构造的两个透镜和平面镜; 镜头和角落立方体; 薄透镜和具有涂层反射背面的厚透镜; 以及薄透镜和背涂层梯度折射率（GRIN）透镜。 为了控制反射光束的偏振，角隅棱镜可以包括粘合在反射表面背面上的塑料填料。 选择填料折射率使得主光束以临界角入射在角立方体的反射表面上。

公开(公告)号：US6115192A

公开(公告)日：2000-09-05

申请号：US418848

申请日：1999-10-15

申请人： Mark McDonald

发明人： Mark McDonald

IPC分类号： G02B27/00 ,  G11B7/00 ,  G11B7/135 ,  G02B3/02 ,  G02B17/00

CPC分类号： G02B27/0025 ,  G11B7/1378 ,  G11B2007/0013

摘要： A pair of compensation lenses which provide an adjustable amount of spherical aberration. Each compensation lens has an external surface and an internal surface. The internal surfaces face each other and define an air gap spacing between them. The external surfaces are preferably planar. The internal surfaces are purely aspheric and therefore have an absence of spherical power and an absence of spherical curvature. The amount of spherical aberration compensation is determined by adjusting an air gap spacing between the internal surfaces. The spherical aberration provided by the lenses can be negative, positive, or zero. For compensation of negative spherical aberration present when focusing light into a data storage medium, the compensation lenses should provide positive spherical aberration. The absence of spherical power characteristic of the compensation lenses allows them to be located far from an objective lens which requires spherical aberration compensation. Also, the absence of spherical power renders the focusing characteristics of an optical system independent from the air gap spacing thickness. Further, absence of spherical power renders the numerical aperture of the optical system unchanged by variations in air gap spacing.

摘要翻译： 一对补偿透镜，可提供可调量的球面像差。 每个补偿透镜都有一个外表面和一个内表面。 内表面彼此面对并且在它们之间限定气隙间隔。 外表面优选是平面的。 内表面纯粹是非球面的，因此没有球面光焦度和没有球形曲率。 通过调节内表面之间的气隙间距来确定球面像差补偿量。 由透镜提供的球面像差可以是负的，正的或零的。 为了补偿将光聚焦到数据存储介质中时存在的负球面像差，补偿透镜应提供正球面像差。 补偿透镜的球面功率特性不存在使得它们远离需要球面像差补偿的物镜。 此外，没有球面功率使得光学系统的聚焦特性与气隙间隔厚度无关。 此外，没有球面功率使得光学系统的数值孔径不变，气隙间距的变化。

公开(公告)号：US06104511A

公开(公告)日：2000-08-15

申请号：US116291

申请日：1998-07-16

申请人： Lambertus Hesselink ,  Mark E. McDonald ,  John F. Heanue ,  Andrew J. Daiber

发明人： Lambertus Hesselink ,  Mark E. McDonald ,  John F. Heanue ,  Andrew J. Daiber

IPC分类号： G03H1/26 ,  G06K19/16 ,  G11C13/04

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：US20040001400A1

公开(公告)日：2004-01-01

申请号：US10109431

申请日：2002-03-27

申请人： Siros Technologies, Inc., a California Corporation

发明人： James R. Amble ,  Herman A. Ferrier ,  LeRoy A. Volz ,  Andrew J. Diaber

IPC分类号： G11B007/095

CPC分类号： G11B7/0938 ,  G11B7/00781 ,  G11B7/24038 ,  G11B2007/0009 ,  G11B2007/0013

摘要： The disclosed device is directed towards an optical data storage system. The optical data storage system comprises an optical medium including a servo plane and at least one data plane. A first laser is positioned to generate a servo laser beam and address the servo plane with a first servo focus spot. A second laser is positioned to generate a read-write laser beam and address the data plane with a second read-write focus spot. A first servo system is associated with the first laser and is configured to provide focus and tracking error correction according to servo information associated with the servo plane. A second servo system is associated with the second laser and is configured to provide focus and tracking error correction according to servo information associated with the data plane.

公开(公告)号：US20030235230A1

公开(公告)日：2003-12-25

申请号：US09910533

申请日：2001-07-20

申请人： Siros Technologies, Inc.

发明人： Robert L. Thornton ,  John E. Epler

IPC分类号： H01S003/098 ,  H01S003/082 ,  H01S003/08

CPC分类号： H01S5/183 ,  H01S3/08004 ,  H01S5/0057 ,  H01S5/041 ,  H01S5/0657 ,  H01S5/141 ,  H01S5/142 ,  H01S5/18302

摘要： A multi-frequency light source is disclosed. In one aspect, a multi-frequency light source may comprise a gain region defined by a first and second mirror. The gain region may have a resonant mode. The light source may also have an external cavity defined by a third mirror and the second mirror. The external cavity has plurality of resonant modes, including a plurality of contiguous desired modes of operation. The second mirror may be formed such that the multi-frequency light source operates at the desired modes of the external cavity.

摘要翻译： 公开了一种多频光源。 在一个方面，多频光源可以包括由第一和第二反射镜限定的增益区域。 增益区域可以具有谐振模式。 光源还可以具有由第三反射镜和第二反射镜限定的外部空腔。 外部腔体具有多个谐振模式，包括多个相邻的期望操作模式。 第二反射镜可以形成为使得多频光源以外腔的期望模式工作。

公开(公告)号：US6040930A

公开(公告)日：2000-03-21

申请号：US71428

申请日：1998-05-01

申请人： John F. Heanue ,  Andrew J. Daiber ,  James Colvin

发明人： John F. Heanue ,  Andrew J. Daiber ,  James Colvin

IPC分类号： G11C13/04 ,  G02B5/32 ,  G03H1/00 ,  G03H1/26

CPC分类号： G11C13/044

摘要： The data encoder (e.g. an amplitude spatial light modulator, ASLM) in a volume holographic storage system is rotated by 45.degree. relative to the normal to the plane of the reference and signal beams, such that the near-Fourier transform pattern of the encoder at the medium has an X-shape. The encoder rotation allows tight packing of spatial multiplexing subvolumes in a rectangular array, and provides for uniform spatial frequency filtering in a perpendicular geometry.

摘要翻译： 体积全息存储系统中的数据编码器（例如，幅度空间光调制器，ASLM）相对于参考和信号光束的平面的法线旋转45°，使得编码器的近傅立叶变换图案 该介质具有X形。 编码器旋转允许将空间复用子体积紧密地堆积成矩形阵列，并且在垂直几何中提供均匀的空间频率滤波。

公开(公告)号：US20030026313A1

公开(公告)日：2003-02-06

申请号：US09919333

申请日：2001-07-30

申请人： Siros Technologies, Inc.

发明人： Michael V. Morelli ,  John Epler

IPC分类号： H01S003/10 ,  H01S003/08

CPC分类号： H01S5/142 ,  H01S5/02288 ,  H01S5/041 ,  H01S5/0657 ,  H01S5/183 ,  H01S2301/163

摘要： A light source is disclosed. In one aspect, a gain region defined by a first and second mirror is provided having a corresponding resonant mode, and an external cavity defined by a third mirror and the second mirror is also provided having a plurality of resonant modes. A birefringent crystal is then disposed within said external cavity for the purpose of controlling the state of polarization.

摘要翻译： 公开了一种光源。 一方面，由第一和第二反射镜限定的增益区域具有相应的谐振模式，并且由第三反射镜和第二反射镜限定的外部空腔也被设置成具有多个谐振模式。 然后将双折射晶体设置在所述外部空腔内，以便控制极化状态。