Frequency-converted high-power laser with recirculating polarization control
    42.
    发明授权
    Frequency-converted high-power laser with recirculating polarization control 有权
    具有再循环偏振控制的变频大功率激光器

    公开(公告)号:US07505491B1

    公开(公告)日:2009-03-17

    申请号:US11897369

    申请日:2007-08-29

    Abstract: A frequency-tripled laser-resonator has three resonator-branches. The branches are optically connected with each other by one or more polarization-selective devices. Unpolarized fundamental radiation is generated by optically pumping a gain-element in one branch of the resonator. The polarization-selective device provides that radiation in the other branches is plane-polarized, with the polarization planes of radiation entering the branches perpendicular to each other. Two optically nonlinear crystals are located in one of the branches of the resonator in which the fundamental radiation is plane-polarized and arranged to generate third-harmonic radiation. Three-branch resonators including two gain-elements having a optical relay therebetween, and a three-branch ring-laser-resonator are also disclosed.

    Abstract translation: 频率三倍的激光谐振器具有三个谐振器支路。 分支通过一个或多个偏振选择装置彼此光学连接。 通过在谐振器的一个支路中光学地泵浦增益元件来产生非偏振的基本辐射。 偏振选择装置提供其他分支中的辐射是平面偏振的,辐射的偏振面进入彼此垂直的分支。 两个光学非线性晶体位于谐振器的一个分支中,其中基本辐射是平面偏振的并且被布置成产生三次谐波辐射。 还公开了包括其间具有光中继器的两个增益元件和三分支环形激光谐振器的三分支谐振器。

    Adjustable pulse-shaper
    43.
    发明申请
    Adjustable pulse-shaper 有权
    可调式脉冲整形机

    公开(公告)号:US20080310004A1

    公开(公告)日:2008-12-18

    申请号:US12228463

    申请日:2008-08-13

    CPC classification number: G02F1/1313 G02F2203/12 G02F2203/26 H01S3/0057

    Abstract: An optical pulse-shaper includes a prism, a delay line having positive optical power and a reflective spatial light modulator. In one arrangement the delay line has a selectively variable optical path length for accommodating pulses of different spectral bandwidth and positive optical power is provided by a concave mirror. In another arrangement, the delay line includes a zoom-mirror arranged to provide selectively variable optical power for accommodating pulses of different spectral bandwidth.

    Abstract translation: 光脉冲整形器包括棱镜,具有正光焦度的延迟线和反射空间光调制器。 在一种布置中,延迟线具有用于容纳不同光谱带宽的脉冲的选择性可变光路长度,并且正光焦度由凹面镜提供。 在另一种布置中,延迟线包括被配置为提供用于适应不同光谱带宽的脉冲的选择性可变光功率的变焦镜。

    Method for laterally-coupling frequency-converted laser radiation out of a resonator
    44.
    发明授权
    Method for laterally-coupling frequency-converted laser radiation out of a resonator 有权
    将频率转换的激光辐射横向耦合到谐振器的方法

    公开(公告)号:US07466728B2

    公开(公告)日:2008-12-16

    申请号:US11484914

    申请日:2006-07-12

    Abstract: In traveling-wave ring-resonator an optically nonlinear crystal for converting visible radiation to ultraviolet (UV) radiation has an input face and two output faces. The visible light propagates through the crystal from the input face to one of the output faces. That output face is coated with a dichroic optical coating that transmits unconverted visible light and reflects the ultraviolet light. The reflected ultraviolet light exits the optically nonlinear crystal via the other output face and is coupled out of the resonator at an angle to the resonator axis.

    Abstract translation: 在行波环形谐振器中,用于将可见光辐射转换为紫外线(UV)辐射的光学非线性晶体具有输入面和两个输出面。 可见光通过晶体从输入面传播到输出面之一。 该输出面涂覆有二向色光学涂层,其传递未转换的可见光并反射紫外光。 反射的紫外光通过另一个输出面离开光学非线性晶体,并且以与谐振器轴成一定角度耦合到谐振器外。

    Attenuator for high-power unpolarized laser beams
    45.
    发明申请
    Attenuator for high-power unpolarized laser beams 失效
    用于大功率非偏振激光束的衰减器

    公开(公告)号:US20080285130A1

    公开(公告)日:2008-11-20

    申请号:US11803271

    申请日:2007-05-14

    CPC classification number: G02B27/281 H01S3/005

    Abstract: Apparatus for attenuating an unpolarized laser beam includes a polarizing beamsplitter for separating the laser beam into two plane-polarized beams following separate paths. The two plane-polarized beams are polarization rotated by a single polarization rotator. Each of the polarization-rotated beams is separated by a polarizing beam-combiner into two plane-polarized portions. One of the portions of one polarization-rotated beam is combined by the beam-combiner with one of the portions of the other polarization-rotated beam to provide an attenuated output-beam. In certain examples of the apparatus the separate paths are made equal in length so that combined beam portions are equal in diameter.

    Abstract translation: 用于衰减非偏振激光束的装置包括偏振分束器,用于将激光束分离成分开的路径之后的两个平面偏振光束。 两个平面偏振光束由单个偏振旋转器偏振旋转。 每个偏振旋转光束由偏振光束组合器分离成两个平面偏振部分。 一个偏振旋转光束的一个部分由光束组合器与另一个偏振旋转光束的部分之一组合以提供衰减的输出光束。 在设备的某些实例中,分离的路径的长度相等,使得组合的梁部分的直径相等。

    Passively modelocked harmonic-generating laser
    47.
    发明授权
    Passively modelocked harmonic-generating laser 失效
    被动闭锁谐波发生激光

    公开(公告)号:US06590911B1

    公开(公告)日:2003-07-08

    申请号:US09586096

    申请日:2000-06-02

    CPC classification number: H01S3/1112 H01S3/108 H01S3/109

    Abstract: A laser includes a resonator terminated by first and second mirrors and including a gain medium providing fundamental radiation. A first optically-nonlinear element is located in the resonator. The first optically-nonlinear element is cooperatively arranged with the first mirror to provide passive modelocking of the fundamental radiation by sequentially converting a first portion of the circulating fundamental radiation to second-harmonic radiation and reconverting a first portion of the second-harmonic radiation to fundamental radiation. A second optically-nonlinear element is arranged to convert a second portion of the second-harmonic radiation to either third-harmonic radiation or fourth-harmonic radiation.

    Abstract translation: 激光器包括由第一和第二反射镜端接并包括提供基本辐射的增益介质的谐振器。 第一光学非线性元件位于谐振器中。 第一光学非线性元件与第一反射镜配合配置,以通过将循环基本辐射的第一部分顺序地转换成二次谐波辐射并将二次谐波辐射的第一部分重新转换为基本光束来提供基本辐射的被动锁模 辐射。 第二光学非线性元件被布置成将二次谐波辐射的第二部分转换成三次谐波辐射或四次谐波辐射。

    Fluence monitoring apparatus for pulsed-laser corneal reshaping system
    48.
    发明授权
    Fluence monitoring apparatus for pulsed-laser corneal reshaping system 有权
    用于脉冲激光角膜整形系统的荧光监测仪

    公开(公告)号:US06287299B1

    公开(公告)日:2001-09-11

    申请号:US09315894

    申请日:1999-05-21

    Abstract: Fluence monitoring apparatus is disclosed for a system for modifying curvature of the cornea of an eye by selective laser photoablation of corneal tissue by delivery of pulses of laser radiation to the cornea in an overlapping pattern. The system includes a scanner for directing the pulses to form the overlapping pattern, the movement of which is modified by an eye-tracker. A beamsplitter is located between the scanner and the cornea for directing a fraction of each of the pulses to a fixed monitor plate, which emits fluorescent light on being irradiated by each pulse-fraction. A video camera 100 images the monitor plate. Processing circuitry periodically records the image which includes images of pulse-fractions delivered during the period between recordings. These recordings are electronically integrated and processed to form a composite image representative of spatial distribution of laser fluence on the cornea.

    Abstract translation: 公开了一种用于通过以重叠图案将激光辐射脉冲递送到角膜的角膜组织的选择性激光光切割来修改眼睛角膜曲率的系统的流量监测装置。 该系统包括用于引导脉冲以形成重叠图案的扫描器,其移动由眼睛跟踪器修改。 分束器位于扫描器和角膜之间,用于将每个脉冲的一部分引导到固定的监视器板,固定的监视器板在被每个脉冲分数照射时发射荧光。 摄像机100对监视器板进行成像。 处理电路周期性地记录包括记录期间传送的脉冲分数的图像的图像。 这些记录被电子整合并处理,以形成代表角膜上的激光注量的空间分布的复合图像。

    Privacy filter for a display device
    49.
    发明授权
    Privacy filter for a display device 失效
    显示设备的隐私过滤器

    公开(公告)号:US5528319A

    公开(公告)日:1996-06-18

    申请号:US336270

    申请日:1994-11-08

    Inventor: R. Russel Austin

    CPC classification number: H04N5/72 H04N5/65

    Abstract: A privacy filter (20) for a display device includes at least two spaced-apart, generally parallel grids (22 and 24). Each grid includes an array of strips (26 and 30) or blocking members having transparent space (28 and 32) therebetween. The strips or blocking members are formed aligned such that an image (37) displayed on the display device may be viewed through the filter at an angle of incidence within a predetermined range of angles but is not discernable at angles outside of the predetermined range.

    Abstract translation: 用于显示装置的隐私过滤器(20)包括至少两个间隔开的大致平行的网格(22和24)。 每个格栅包括条带(26和30)阵列或其间具有透明空间(28和32)的阻挡构件。 带状或阻挡构件被形成为对准的,使得可以在预定角度范围内以入射角通过滤光器观看显示在显示装置上的图像(37),但是不能在预定范围之外的角度辨别。

    Transparent electrodes for liquid cells and liquid crystal displays
    50.
    发明授权
    Transparent electrodes for liquid cells and liquid crystal displays 失效
    用于液体电池和液晶显示器的透明电极

    公开(公告)号:US5508091A

    公开(公告)日:1996-04-16

    申请号:US175769

    申请日:1993-12-30

    Inventor: R. Russel Austin

    Abstract: A multilayer antireflection coating for a liquid cell three high refractive index layers and two low refractive index layers arranged alternatively with high refractive index layers outermost. The innermost high refractive index layer is formed from an electrically-conductive metal oxide material and may have an optical thickness between about one-tenth and three wavelengths of visible light. Thickness of each layer may be adjusted to provide lowest reflectivity. Alternatively layer thickness may be arranged such that if three layers of the coating are etched away to define an electrode coating, spectral response of the remaining two layers is the same as the original five layers.

    Abstract translation: 用于液晶单元的三层抗反射涂层,三层高折射率层和两层低折射率层交替布置,最高层折射率层。 最内层的高折射率层由导电金属氧化物材料形成,并且可以具有大约十分之三到三个可见光波长之间的光学厚度。 可以调节各层的厚度以提供最低的反射率。 或者,层厚可以被布置成使得如果将三层涂层蚀刻掉以限定电极涂层,则剩余两层的光谱响应与原始五层相同。

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