公开(公告)号：US5208882A

公开(公告)日：1993-05-04

申请号：US791830

申请日：1991-11-14

申请人： Thomas A. Strasser ,  Wei Y. Hsu ,  Mool C. Gupta

发明人： Thomas A. Strasser ,  Wei Y. Hsu ,  Mool C. Gupta

IPC分类号： G02B6/122 ,  G02B6/124 ,  G02B6/34

CPC分类号： G02B6/34 ,  G02B6/124

摘要： A hybrid, thin-film, optical waveguide structure has a substrate with a grating coupler formed thereon. A thin-film waveguide film is formed on the substrate and has a tapered portion overlaying the grating.

公开(公告)号：US5363226A

公开(公告)日：1994-11-08

申请号：US118170

申请日：1993-08-02

申请人： Thomas A. Strasser ,  Mool C. Gupta

发明人： Thomas A. Strasser ,  Mool C. Gupta

IPC分类号： G02B6/34 ,  G02B27/44

CPC分类号： G02B6/12007 ,  G02B27/4238 ,  G02B27/4277 ,  G02B6/2931 ,  G02B6/29394

摘要： A surface relief reflection diffraction grating is used as a wavelength compensating element for a diffraction grating coupler. The changes in wavelength are compensated for by adjusting the parameters of the reflection diffraction grating so that the dispersion of the reflection diffraction grating is generally equal and opposite to the dispersion of the diffraction grating coupler. The technique has been shown to permit the range of wavelengths which can coupled with the diffraction grating coupler to be extended from 0.7 nm to 17 nm. The lateral shift has an important contribution and can be limiting factor in wavelength compensation.

摘要翻译： 表面浮雕反射衍射光栅用作衍射光栅耦合器的波长补偿元件。 通过调整反射衍射光栅的参数来补偿波长的变化，使得反射衍射光栅的色散与衍射光栅耦合器的色散大致相等并相反。 已经显示出该技术允许可以与衍射光栅耦合器耦合的波长范围从0.7nm扩展到17nm。 横向偏移具有重要的作用，可以作为波长补偿的限制因素。

公开(公告)号：US5258967A

公开(公告)日：1993-11-02

申请号：US840213

申请日：1992-02-24

申请人： Thomas A. Strasser ,  Mool C. Gupta

发明人： Thomas A. Strasser ,  Mool C. Gupta

IPC分类号： G11B7/12 ,  G11B7/135 ,  G11B7/09

CPC分类号： G11B7/1353 ,  G11B7/124

摘要： In the read/write head of an optical storage system, a bi-direction grating coupler is used to replace optical components normally found in the read/write head. The use of the bi-directional grating coupler reduces the bulk and weight of the read/write head. The two channels of the bi-directional grating coupler can be used to separate a radiation component that can used to provide a tracking control signal from a radiation component that can be used to provide a focus control signal. One of the channels is also used to provide the radiation component from which the data on the storage medium can be identified. The bi-directional coupler can be implemented by two grating couplers, each grating coupler having a thin film associated therewith and each grating coupler diverting a selected radiation portion into the associated thin film. The bi-directional grating coupler can be implemented using a single grating with tapered thin film surfaces, the taper separating the selected radiation components into selected portions of the thin film. The tapered thin film surface broadens the wavelength response of the associated grating. In either embodiment, a reflection diffraction grating can be inserted in the optical path to compensate for shifts in the radiation wavelength.

摘要翻译： 在光学存储系统的读/写头中，使用双向光栅耦合器来代替通常在读/写头中发现的光学元件。 双向光栅耦合器的使用降低了读/写头的体积和重量。 双向光栅耦合器的两个通道可用于分离可用于从可用于提供聚焦控制信号的辐射分量提供跟踪控制信号的辐射分量。 其中一个通道还用于提供可以识别存储介质上的数据的辐射分量。 双向耦合器可以由两个光栅耦合器实现，每个光栅耦合器具有与之相关联的薄膜，并且每个光栅耦合器将选定的辐射部分转向相关联的薄膜。 可以使用具有锥形薄膜表面的单个光栅来实现双向光栅耦合器，锥形将所选择的辐射分量分离成薄膜的选定部分。 锥形薄膜表面使相关光栅的波长响应变宽。 在任一实施例中，反射衍射光栅可插入光路中以补偿辐射波长的偏移。

公开(公告)号：US20100000770A1

公开(公告)日：2010-01-07

申请号：US12098000

申请日：2006-12-19

申请人： Mool C. Gupta ,  Yonglai Yang ,  Kenneth L. Dudley ,  Roland W. Lawrence

发明人： Mool C. Gupta ,  Yonglai Yang ,  Kenneth L. Dudley ,  Roland W. Lawrence

IPC分类号： H05K1/02 ,  C08K3/04 ,  C08J9/228 ,  C08K5/56 ,  B05D3/00

CPC分类号： H01B1/24 ,  H01C17/0652 ,  H01G9/058 ,  H01M4/133 ,  H01M4/137 ,  H01M4/364 ,  H01M4/587 ,  Y10T29/49117

摘要： An electromagnetic interference (EMI) shielding material includes a matrix of a dielectric or partially conducting polymer, such as foamed polystyrene, with carbon nanotubes or other nanostructures dispersed therein in sufficient concentration to make the material electrically conducting. The composite is formed by dispersing the nanotube material in a solvent in which the dielectric or partially conducting polymer is soluble and mixing the resulting suspension with the dielectric or partially conducting polymer. A foaming agent can be added to produce a lightweight foamed material. An organometallic compound can be added to enhance the conductivity further by decomposition into a metal phase.

摘要翻译： 电磁干扰（EMI）屏蔽材料包括介电或部分导电聚合物如泡沫聚苯乙烯的基质，碳纳米管或其它纳米结构以足够的浓度分散在其中以使材料导电。 复合材料通过将纳米管材料分散在其中电介质或部分导电聚合物可溶的溶剂中并将所得悬浮液与电介质或部分导电聚合物混合而形成。 可以加入发泡剂以生产轻质的泡沫材料。 可以加入有机金属化合物以通过分解成金属相进一步提高导电性。

公开(公告)号：US5991065A

公开(公告)日：1999-11-23

申请号：US763174

申请日：1996-12-10

申请人： Alan C. G. Nutt ,  Mool C. Gupta

发明人： Alan C. G. Nutt ,  Mool C. Gupta

IPC分类号： G02F1/03 ,  G02F1/315 ,  G02F1/355

CPC分类号： G02F1/03 ,  G02F1/315 ,  G02F1/3558 ,  G02F2201/122 ,  G02F2202/20

摘要： An electro-optic modulator is described which uses periodic inverted domain regions to permit it to be able to handle high powered optical light.

摘要翻译： 描述了一种电光调制器，其使用周期性反向域区域以允许其能够处理高功率光学光。

公开(公告)号：US5714240A

公开(公告)日：1998-02-03

申请号：US645973

申请日：1996-05-14

申请人： Mool C. Gupta ,  Tuviah E. Schlesinger ,  Daniel D. Stancil

发明人： Mool C. Gupta ,  Tuviah E. Schlesinger ,  Daniel D. Stancil

IPC分类号： G02F1/295 ,  G02F1/377 ,  B32B9/00

CPC分类号： G02F1/295 ,  G02F1/3775 ,  Y10S428/913 ,  Y10T428/24917 ,  Y10T428/24926

摘要： An integrated frequency conversion and scanner for converting the frequency of an input light beam and deflecting the converted light beam through an electronically controlled angle is disclosed. This structure includes an electrooptic crystal including a region formed for converting the frequency of the input light to a higher frequency; and a field changing structure associated with selected regions of the crystal arranged so that an electric field is created at least partially within the crystal to change its refractive index to thereby deflect the converted light beam through an electronically controlled angle.

摘要翻译： 公开了一种用于转换输入光束的频率并通过电子控制的角度使转换的光束偏转的集成频率转换和扫描器。 该结构包括电光晶体，其包括形成的用于将输入光的频率转换为较高频率的区域; 以及与晶体的选定区域相关联的场改变结构，其布置成使得至少部分地在晶体内产生电场以改变其折射率，从而使经转换的光束通过电子控制的角度偏转。

公开(公告)号：US5130857A

公开(公告)日：1992-07-14

申请号：US721037

申请日：1991-06-26

申请人： Mool C. Gupta ,  Song-Tsuen Peng

发明人： Mool C. Gupta ,  Song-Tsuen Peng

IPC分类号： G02B5/18 ,  G11B7/135 ,  G11B11/105

CPC分类号： G11B7/1353 ,  G02B5/1866 ,  G11B11/10532

摘要： A method is disclosed for making an optical device which is adapted to diffract an incident beam of radiation to form a plurality of discrete diffracted beams of different orders. The optical device comprises two diffraction gratings which are supported on a substrate and are separated from each other by a thin film. In order to obtain the advantages of a doubly-periodic structure, the thickness of the thin film between the two gratings is very accurately controlled to be on the order of the wavelength of the incident beam of radiation.

摘要翻译： 公开了一种用于制造适于衍射入射入射光束以形成不同阶数的多个离散衍射光束的光学装置的方法。 该光学器件包括两个衍射光栅，它们被支撑在一个衬底上并且被薄膜彼此分开。 为了获得双周期结构的优点，两个光栅之间的薄膜的厚度被非常精确地控制为入射入射光束的波长的数量级。

公开(公告)号：US10131086B2

公开(公告)日：2018-11-20

申请号：US13536695

申请日：2012-06-28

申请人： Mool C. Gupta ,  Barada K. Nayak ,  Paul O. Caffrey

发明人： Mool C. Gupta ,  Barada K. Nayak ,  Paul O. Caffrey

IPC分类号： B29C59/02 ,  B29D11/00

摘要： A method for the replication of a textured surface of a master is disclosed, in which the textured surface of the master is comprised of micron-scale cones having nano- or micro-scale surface features. Alternatively, the master may be comprised of micron-scale structures, nano-scale structures, and micron scale structures having nano-scale surface features. Replication can be achieved through a molding or embossing technique. Using these technique, the textured surface of the master is faithfully replicated onto the surface of the replica. A number of representative materials and additional processing steps are also disclosed. The replicated texture exhibits many useful properties, including enhanced hydrophobicity and reduced light reflection properties, making the disclosed method a simple and attractive alternative to existing texturing techniques.

公开(公告)号：US20100143744A1

公开(公告)日：2010-06-10

申请号：US12530313

申请日：2008-03-06

申请人： Mool C. Gupta ,  Barada K. Nayak

发明人： Mool C. Gupta ,  Barada K. Nayak

IPC分类号： B32B3/30 ,  H01L21/302 ,  B32B15/00 ,  C23F1/00 ,  H01L21/306 ,  H01L21/3065 ,  H01L31/0236 ,  H01L31/18 ,  H01L29/00

CPC分类号： H01L31/0236 ,  B23K26/0006 ,  B23K26/355 ,  B23K2103/16 ,  B23K2103/42 ,  B23K2103/50 ,  B23K2103/52 ,  B82Y20/00 ,  G02B6/1225 ,  H01L21/02422 ,  H01L21/02532 ,  H01L21/02587 ,  H01L21/02686 ,  Y02E10/50 ,  Y10T428/12396 ,  Y10T428/24479

摘要： The surface of a material is textured and by exposing the surface to pulses from an ultrafast laser. The laser treatment causes pillars to form on the treated surface. These pillars provide for greater light absorption. Texturing and crystallization can be carried out as a single step process. The crystallization of the material provides for higher electric conductivity and changes in optical and electronic properties of the material. The method may be performed in vacuum or a gaseous environment. The gaseous environment may aid in texturing and/or modifying physical and chemical properties of the surfaces. This method may be used on various material surfaces, such as semiconductors, metals and their alloys, ceramics, polymers, glasses, composites, as well as crystalline, nanocrystalline, polycrystalline, microcrystalline, and amorphous phases.

摘要翻译： 材料的表面是纹理的，并且通过将表面暴露于来自超快激光的脉冲。 激光治疗会在被处理的表面上形成柱子。 这些柱子提供更大的光吸收。 纹理和结晶可以单步进行。 材料的结晶提供了更高的导电性和材料的光学和电子性能的变化。 该方法可以在真空或气体环境中进行。 气体环境可以有助于纹理化和/或改变表面的物理和化学性质。 该方法可用于各种材料表面，例如半导体，金属及其合金，陶瓷，聚合物，玻璃，复合材料以及晶体，纳米晶体，多晶，微晶和非晶相。

公开(公告)号：US5761226A

公开(公告)日：1998-06-02

申请号：US654941

申请日：1996-05-29

申请人： Mool C. Gupta

发明人： Mool C. Gupta

IPC分类号： H01S5/024 ,  H01S5/06 ,  H01S5/12 ,  H01S5/14 ,  H01S5/40 ,  H01S3/10

CPC分类号： H01S5/146 ,  H01S5/0092 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/02446 ,  H01S5/0612 ,  H01S5/1215 ,  H01S5/4087

摘要： A frequency converting laser device includes a plurality of laser diodes each adapted to produce an output laser light beam and a plurality of optical fibers, each coupled to the output of a corresponding laser diode and including a built-in grating in the optical fiber arranged so as to provide a beam having a specific wavelength and to reflect a small portion of such beam back into the laser diode while transmitting the beam so that the laser diode will produce a beam of that wavelength. The device further includes frequency converting structure adapted to receive the transmitted beams of laser light and to change the frequency of each input beam to produce output beams at desired frequencies.

摘要翻译： 频率转换激光器件包括多个激光二极管，每个激光二极管适于产生输出激光束和多个光纤，每个光纤耦合到对应的激光二极管的输出端，并且包括在光纤中布置的内置光栅 为了提供具有特定波长的光束并且在传输光束时将这种光束的一小部分反射回激光二极管，使得激光二极管将产生该波长的光束。 该装置还包括频率转换结构，其适于接收所发送的激光束并且改变每个输入光束的频率以产生期望频率的输出光束。