Method and apparatus using volume holographic wavelength blockers
    2.
    发明授权
    Method and apparatus using volume holographic wavelength blockers 有权
    使用体积全息波长阻滞剂的方法和装置

    公开(公告)号:US08184285B2

    公开(公告)日:2012-05-22

    申请号:US13157265

    申请日:2011-06-09

    IPC分类号: G01J3/44

    摘要: The invention disclosed here teaches methods to fabricate and utilize a non-dispersive holographic wavelength blocker. The invention enables the observation of the Raman signal near the excitation wavelength (˜9 cm−1) with the compactness of standard thin film/holographic notch filter. The novelty is contacting several individual volume holographic blocking notch filter (VHBF) to form one high optical density blocking filter without creating spurious multiple diffractions that degrade the filter performance. Such ultra-narrow-band VHBF can be used in existing compact Raman instruments and thus will help bring high-end research to a greater number of users at a lower cost.

    摘要翻译: 这里公开的发明教导了制造和利用非色散全息波长阻挡剂的方法。 本发明能够以标准薄膜/全息陷波滤波器的紧凑度观察激发波长(〜9cm -1)附近的拉曼信号。 新颖的是接触几个单独的体积全息阻塞陷波滤波器(VHBF)以形成一个高光密度阻塞滤波器,而不会产生降低滤波器性能的伪多重衍射。 这种超窄带VHBF可以用于现有的紧凑型拉曼仪器,从而有助于以更低的成本为更多的用户带来高端研究。

    Optical pulse shaping method and apparatus
    3.
    发明申请
    Optical pulse shaping method and apparatus 有权
    光脉冲成形方法及装置

    公开(公告)号:US20100103489A1

    公开(公告)日:2010-04-29

    申请号:US12460060

    申请日:2009-07-13

    IPC分类号: G02B5/32

    摘要: The invention disclosed here teaches methods and apparatus for altering the temporal and spatial shape of an optical pulse. The methods correct for the spatial beam deformation caused by the intrinsic DC index gradient in a volume holographic chirped reflective grating (VHCRG).The first set of methods involves a mechanical mean of pre-deforming the VHCRG so that the combination of the deflection caused by the DC index gradient is compensated by the mechanical deformation of the VHCRG. The second set of methods involves compensating the angular deflection caused by the DC index gradient by retracing the diffracted beam back onto itself and by re-diffracting from the same VHCRG. Apparatus for temporally stretching, amplifying and temporally compressing light pulses are disclosed that rely on the methods above.

    摘要翻译: 这里公开的发明教导了用于改变光脉冲的时间和空间形状的方法和装置。 该方法校正了体积全息啁啾反射光栅(VHCRG)中由本征DC指数梯度引起的空间光束变形。 第一组方法涉及到使VHCRG预变形的机械平均值,使得由DC指数梯度引起的偏转的组合由VHCRG的机械变形补偿。 第二组方法包括通过将衍射光束回射回自身并通过从相同的VHCRG重新衍射来补​​偿由DC折射率梯度引起的角度偏转。 公开了依赖于上述方法的用于暂时拉伸,放大和时间压缩光脉冲的装置。

    Method and a system to dispense and detect fluorescent quantum dots
    5.
    发明授权
    Method and a system to dispense and detect fluorescent quantum dots 失效
    方法和分配和检测荧光量子点的系统

    公开(公告)号:US07367505B2

    公开(公告)日:2008-05-06

    申请号:US10865077

    申请日:2004-06-09

    IPC分类号: G06K7/10

    摘要: The invention combines fluorescent QDs and methods to dispense and detect them efficiently in a compact volume for a range of optical tagging applications. Micro-fluidic devices are used for mixing water-soluble fluorescent QDs in aqueous solutions to create a multi color fluorescent nano-optical tag, and gratings are used for spreading the spectral components of the fluorescent signal leading to an improvement in optical data storage capacity over prior art methods. The spectral signature of the tag is detected by a compact read-out head with a grating spectrometer. One way is to dispense the tag within the pits of a DVD or CD using an ink-jet nozzle and exciting them by a large range of wavelengths each shorter that the emission peak. The filters have a high immunity to prolonged exposure to high temperatures, and up to 41 infrared filters can be holographically recorded by spatial multiplexing of the substrate.

    摘要翻译: 本发明结合了荧光量子点和方法,以便在一系列光标签应用中以紧凑的体积有效地分配和检测它们。 微流体装置用于在水溶液中混合水溶性荧光量子点以产生多色荧光纳米光学标签,并且光栅用于扩展荧光信号的光谱分量,导致光学数据存储容量的改善 现有技术方法。 标签的光谱特征由具有光栅光谱仪的紧凑型读出头检测。 一种方法是使用喷墨喷嘴在DVD或CD的凹坑内分配标签,并通过比发射峰更短的大范围的波长来激发它们。 这些滤光片具有高度的抗高温性,能够长时间暴露在高温下,而通过基片的空间复用可以对多达41个红外滤光片进行全息记录。

    System and methods for refractive and diffractive volume holographic elements
    6.
    发明申请
    System and methods for refractive and diffractive volume holographic elements 审中-公开
    折射和衍射体全息元件的系统和方法

    公开(公告)号:US20050270607A1

    公开(公告)日:2005-12-08

    申请号:US11092149

    申请日:2005-03-28

    IPC分类号: G02B5/32

    CPC分类号: G02B5/32 H01S5/141

    摘要: A laser utilizes feedback from a volume holographic grating integrated in a collimating lens as a wavelength standard to lock the laser output wavelength to its desired value. This feedback is optical, wherein a volume hologram reflection grating is used to generate optical feedback into the laser gain region. Fabrication of the integrated volume hologram grating lens elements is by either first recording the grating in a rectangular parallelepiped of material and then shaping the lens from it, or alternatively by first shaping the material into the desired shape and then recording the grating with the use of an apparatus composed of an optical block within which a cavity is present to accept the lens and index matching fluid.

    摘要翻译: 激光器利用集成在准直透镜中的体积全息光栅作为波长标准的反馈来将激光输出波长锁定到其期望值。 该反馈是光学的,其中使用体积全息图反射光栅来产生到激光增益区域的光学反馈。 集成的体积全息图光栅透镜元件的制造是首先将光栅记录在长方体的材料中,然后从其成形透镜,或者通过首先将材料成形为所需的形状,然后使用 由光学块组成的装置,其中存在空腔以接收透镜和折射匹配流体。

    Holographic pump coupler and laser grating reflector
    7.
    发明申请
    Holographic pump coupler and laser grating reflector 失效
    全息泵耦合器和激光光栅反射器

    公开(公告)号:US20050265656A1

    公开(公告)日:2005-12-01

    申请号:US11092392

    申请日:2005-03-29

    IPC分类号: G02B6/34 H01S3/094

    CPC分类号: G02B6/34 H01S3/094003

    摘要: In the present invention, a volume holographic optical element is used as a pump coupler. The holographic coupler allows at least one pump wavelength to be coupled into the laser medium. The direction of the pump beam onto the coupler is not co-linear with the direction of the signal beam out of the coupler. The invention further provides the coupling of more than one pump wavelengths using a single holographic coupler element while maintaining the high isolation between pump and signal beam. The invention further provides a narrow-band reflection grating of various efficiencies for the signal beam (as part of the laser cavity).

    摘要翻译: 在本发明中,使用体积全息光学元件作为泵耦合器。 全息耦合器允许至少一个泵波长耦合到激光介质中。 泵浦光束到耦合器上的方向与信号光束离开耦合器的方向不是共线的。 本发明还提供了使用单个全息耦合器元件的多于一个的泵浦波长的耦合,同时保持了泵浦和信号波束之间的高隔离度。 本发明还提供了用于信号光束(作为激光腔的一部分)的各种效率的窄带反射光栅。

    Wavelength stabilized lasers with feedback from multiplexed volume holograms feedback
    8.
    发明申请
    Wavelength stabilized lasers with feedback from multiplexed volume holograms feedback 审中-公开
    具有多路复用体积全息图反馈的波长稳定的激光器

    公开(公告)号:US20050248819A1

    公开(公告)日:2005-11-10

    申请号:US11090720

    申请日:2005-03-25

    IPC分类号: G02B3/06 G02B5/32

    摘要: A laser utilizes feedback from a multiplexed volume holographic grating (VHG) as a stand alone element or integrated in a collimating lens as a wavelength standard to lock the laser output wavelength to its desired value. This feedback is optical, wherein a volume hologram reflection grating is used to generate optical feedback into the laser gain region. The multiplexed VHG can exhibit a variety of spectral bandwidth as a result of coherent superposition of the multiplexed gratings or the multiplexed VHG can replace individual VHGs that are used with several wavelength specific lasers.

    摘要翻译: 激光器利用来自多重体积全息光栅(VHG)的反馈作为独立元件或集成在准直透镜中作为波长标准,以将激光输出波长锁定到其期望值。 该反馈是光学的,其中使用体积全息图反射光栅来产生到激光增益区域的光学反馈。 由于多路复用光栅的相干叠加,复用的VHG可以呈现多种光谱带宽,或多路复用的VHG可以替代与若干波长特定的激光器一起使用的各个VHG。

    Method and apparatus for implementing a multi-channel tunable filter
    9.
    发明申请
    Method and apparatus for implementing a multi-channel tunable filter 失效
    用于实现多通道可调谐滤波器的方法和装置

    公开(公告)号:US20050084211A1

    公开(公告)日:2005-04-21

    申请号:US11004319

    申请日:2004-12-03

    IPC分类号: G02B6/34

    摘要: The present invention provides a multi-channel turnable filter and methods for making such a filter. In one embodiment, the filter comprises a bank of gratings imprinted into a filter material, such as Lithium Niobate. In another embodiment, the filter comprises a bank of gratings imprinted on a thin-film filter. An optical read-head comprising a pair of lenses is configured to pass light from within an optical fiber carrying multiple wavelengths through an appropriate grating to extract or drop a specific wavelength. To ensure continuous data transmission, the filter is tuned to a wavelength by configuring the read-head to move in a hitless manner. In one embodiment, the gratings are recorded by the interference of two beams. A first plane wave reflects off a first mirror stack and a second plane wave reflects off a second mirror stack In another embodiment, the gratings are recorded by a phase masking method.

    摘要翻译: 本发明提供一种多通道可转换滤波器及其制造方法。 在一个实施例中,滤光器包括印刷到过滤材料中的一组光栅,例如铌酸锂。 在另一个实施例中,滤光器包括压印在薄膜滤光片上的一组光栅。 包括一对透镜的光学读取头被配置为使来自携带多个波长的光纤内的光通过适当的光栅以提取或降低特定波长。 为了确保连续的数据传输,通过配置读取头以无限的方式移动,将滤波器调谐到一个波长。 在一个实施例中,光栅由两个光束的干涉来记录。 第一平面波反射离开第一反射镜叠层,而第二平面波从第二反射镜堆叠反射。在另一个实施例中,通过相位掩蔽方法记录光栅。

    Method and a system to dispense and detect fluorescent quantum dots
    10.
    发明申请
    Method and a system to dispense and detect fluorescent quantum dots 失效
    方法和分配和检测荧光量子点的系统

    公开(公告)号:US20050017079A1

    公开(公告)日:2005-01-27

    申请号:US10865077

    申请日:2004-06-09

    IPC分类号: G01N21/64 G06K7/10

    摘要: The invention combines fluorescent QDs and methods to dispense and detect them efficiently in a compact volume for a range of optical tagging applications. Micro-fluidic devices are used for mixing water-soluble fluorescent QDs in aqueous solutions to create a multi color fluorescent nano-optical tag, and gratings are used for spreading the spectral components of the fluorescent signal leading to an improvement in optical data storage capacity over prior art methods. The spectral signature of the tag is detected by a compact read-out head with a grating spectrometer. One way is to dispense the tag within the pits of a DVD or CD using an ink-jet nozzle and exciting them by a large range of wavelengths each shorter that the emission peak. The filters have a high immunity to prolonged exposure to high temperatures, and up to 41 infrared filters can be holographically recorded by spatial multiplexing of the substrate.

    摘要翻译: 本发明结合了荧光量子点和方法,以便在一系列光标签应用中以紧凑的体积有效地分配和检测它们。 微流体装置用于在水溶液中混合水溶性荧光量子点以产生多色荧光纳米光学标签,并且光栅用于扩展荧光信号的光谱分量,导致光学数据存储容量的改善 现有技术方法。 标签的光谱特征由具有光栅光谱仪的紧凑型读出头检测。 一种方法是使用喷墨喷嘴在DVD或CD的凹坑内分配标签,并通过比发射峰更短的大范围的波长来激发它们。 这些滤光片具有高度的抗高温性,能够长时间暴露在高温下,而通过基片的空间复用可以对多达41个红外滤光片进行全息记录。