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    • 4. 发明申请
    • Method and system for coherent beam combining using an integrated diffractive beam combiner and sampler
    • 使用集成衍射光束组合器和采样器的相干光束组合的方法和系统
    • US20080084598A1
    • 2008-04-10
    • US11543677
    • 2006-10-05
    • Joshua E. RothenbergRobert R. RiceMichael G. WickhamHiroshi Komine
    • Joshua E. RothenbergRobert R. RiceMichael G. WickhamHiroshi Komine
    • G02F1/01
    • H01S3/2383B23K26/0604B23K26/0613H01S3/06754H01S3/10007
    • A system and method for combining plural low power light beams into a coherent high power light beam by means of a diffractive optical element operating as both a beam combiner and beam sampler. An oscillation source transmits a master signal that is split into plural beams propagating at a common wavelength. Each beam is phase locked by a corresponding phase modulator according to a phase correction signal. The beams are directed through a fiber array to the diffractive optical element to allow efficient coherent combination of the beams at a desired diffraction order. The diffractive optical element includes a periodic sampling grating for diffracting a low power sample beam representative of the combined beam. A phase detection stage detects phases of constituent beams in the sample beam from which the phase correction signals are derived and fed back to the phase modulators. The diffractive optical element may be further modified to collimate beams diverging from the fiber array and to focus the sample beam onto a phase detector.
    • 一种通过用作光束组合器和光束取样器的衍射光学元件将多个低功率光束组合成相干高功率光束的系统和方法。 振荡源发送分割成以公共波长传播的多个波束的主信号。 每个光束根据相位校正信号由相应的相位调制器锁相。 光束通过光纤阵列引导到衍射光学元件,以允许以期望的衍射级别的光束的有效相干组合。 衍射光学元件包括用于衍射代表组合光束的低功率采样光束的周期性采样光栅。 相位检测级检测相位校正信号从中得到的采样光束中的构成光束的相位,并将其反馈到相位调制器。 可以进一步修改衍射光学元件以准直从光纤阵列发散的光束并将样品光束聚焦到相位检测器上。
    • 7. 发明授权
    • Micro-doppler microscope
    • US06598478B2
    • 2003-07-29
    • US10052979
    • 2001-11-09
    • Robert R. Rice
    • Robert R. Rice
    • G01N2904
    • G01S17/50G01H9/00
    • A micro-doppler microscope for providing an indication of the vibration of a target. An input laser beam is received by a beamsplitter that divides the input laser beam into a transmitted portion and a reflected portion. A first focusing optics focuses the transmitted portion onto a target, the target scattering a scattered portion thereof. This scattered portion is directed back through the first focusing optics, and reflected off the beamsplitter. Second focusing optics is positioned to receive the scattered portion from the beamsplitter and for focusing the scattered portion. A planar mirror is positioned to reflect the reflected portion of the input laser beam back through the beamsplitter and through the second focusing optics so that it is focused. A fast photodetector receives the focused scattered portion from the second focusing optics and the focused reflected portion from the second focusing optics. Both focused portions are focused on the same spot on the fast photodetector. Coherent mixing of the focused portions occurs at the fast photodetector, the frequency modulation of the scattered portion thereby providing an indication of the vibration of the target. The indication is provided as an output signal from the fast photodetector.
    • 8. 发明授权
    • Vertical cavity electron beam pumped semiconductor lasers and methods
    • 垂直腔电子束泵浦半导体激光器和方法
    • US5807764A
    • 1998-09-15
    • US818542
    • 1997-03-14
    • Robert R. RiceNeil F. RuggieriJames F. Shanley
    • Robert R. RiceNeil F. RuggieriJames F. Shanley
    • H01S5/02H01S5/04H01S5/183H01S5/30H01S5/343H01L21/76H01S3/19
    • B82Y20/00H01S5/04H01S5/18383H01S3/0959H01S5/0213H01S5/18369H01S5/34333
    • An electron beam pumped semiconductor laser includes a semiconductor laser screen and an electron beam source adjacent the semiconductor laser screen. The semiconductor laser screen comprises a transparent single crystal substrate, an electron beam responsive active gain layer on the substrate, and first and second reflective layers. The epitaxial electron beam responsive active gain layer has a crystal structure in alignment with the crystal structure of the substrate, and the first and second reflective layers define a laser cavity through the epitaxial electron beam responsive active gain layer therebetween. The electron beam source generates an electron beam which impinges on the epitaxial electron beam responsive active gain layer thereby generating a laser output. Accordingly, the single crystal active gain layer can be formed on the substrate by epitaxial deposition techniques increasing the performance and reliability of the electron beam pumped semiconductor laser.
    • 电子束泵浦半导体激光器包括半导体激光屏和邻近半导体激光屏的电子束源。 半导体激光屏包括透明单晶衬底,衬底上的电子束响应有源增益层以及第一和第二反射层。 外延电子束响应有源增益层具有与衬底的晶体结构对准的晶体结构,并且第一和第二反射层通过其间的外延电子束响应的有源增益层限定激光腔。 电子束源产生电子束,其照射在外延电子束响应的有源增益层上,从而产生激光输出。 因此,可以通过提高电子束泵浦半导体激光器的性能和可靠性的外延沉积技术在衬底上形成单晶有源增益层。
    • 9. 发明授权
    • Multi-viewer three dimensional (3-D) virtual display system and
operating method therefor
    • 多观点三维(3-D)虚拟显示系统及其操作方法
    • US5781229A
    • 1998-07-14
    • US802901
    • 1997-02-18
    • Mark S. ZedikerAlan J. BaconRobert R. Rice
    • Mark S. ZedikerAlan J. BaconRobert R. Rice
    • H04N5/74H04N13/00H04N13/04
    • H04N13/0438H04N13/0048H04N13/0459H04N13/047H04N13/0475H04N13/0477H04N13/0481H04N5/74H04N13/0221H04N13/0239H04N13/0257H04N13/0289H04N13/0296H04N13/0404H04N13/0422H04N13/0425H04N13/0431H04N13/0434H04N13/0436H04N13/0497
    • A three-dimensional (3-D) virtual display system for displaying a flicker-free 3-D virtual image to each of N viewers randomly dispersed about a horizontally disposed viewing screen, where N is an integer greater than 1, includes a laser projector for generating N.times.M image pairs responsive to a video signal comprising the N.times.M image pairs, N transmitters associated with respective ones of the N viewers, each of the N transmitters generating a unique coded pulse, a detector for determining the position of each of the N viewers relative to the viewing screen responsive to the respective unique coded pulse and for generating respective position data, a graphics processor for generating the video signal responsive to the position data, and N selectors associated with the N viewers for selecting the M image pairs out of the N.times.M image pairs allocated to each of the N viewers, respectively. The projector includes an electron-beam-pumped semiconductor laser (EBSL) screen, e.g., a vertical cavity surface emitting laser screen. In an exemplary case, the video signal carries in excess of 1000 image pairs per second, which is far beyond the capability of conventional cathode ray tubes (CRTs) to display. A method for generating N 3D virtual images and a corresponding video signal are also described.
    • 一种三维(3-D)虚拟显示系统,用于向N个观看者中随机分散的N个观看者中的每一个显示无闪烁的3-D虚拟图像,其中N是大于1的整数,其中N是大于1的整数,包括激光投影仪 用于产生响应于包括所述N×M图像对的视频信号的N×M图像对,与所述N个观看者中的所述N个观看者相关联的N个发射机,所述N个发射机中的每一个生成唯一的编码脉冲,用于确定所述N个观看者中的每一个的位置的检测器 相对于观看屏幕响应于相应的唯一编码脉冲并且用于产生相应的位置数据,用于响应于位置数据生成视频信号的图形处理器,以及与N个观看者相关联的N个选择器,用于从 分别分配给N个观看者中的每一个的NxM图像对。 投影仪包括电子束泵浦半导体激光器(EBSL)屏幕,例如垂直腔表面发射激光屏。 在示例性情况下,视频信号每秒传输超过1000个图像对,这远远超出了常规阴极射线管(CRT)显示的能力。 还描述了一种用于产生N个3D虚拟图像和相应的视频信号的方法。
    • 10. 发明授权
    • High efficiency, high power direct diode laser systems and methods
therefor
    • 高效率,高功率直接二极管激光系统及其方法
    • US5715270A
    • 1998-02-03
    • US722619
    • 1996-09-27
    • Mark S. ZedikerRobert R. RiceJohn M. Haake
    • Mark S. ZedikerRobert R. RiceJohn M. Haake
    • H01S3/06G02B6/42H01S5/026H01S5/40H01S3/091G02B6/28H01S3/00
    • G02B6/4249H01S5/4025H01S5/4012H01S5/4087
    • A direct diode laser system includes N laser head assemblies (LHAs) generating N output beams, N optical fibers receiving respective N output beams and generating N received output beams, and a torch head recollimating and focusing the N received output beams onto a single spot. Preferably, each of the laser head assemblies of the direct diode laser system includes M modules generating M laser beams, wherein each of the M laser beams has a corresponding single wavelength of light, M-1 dichroic filters, wherein each of the M-1 dichroic filter transmits a corresponding one of the M laser beams and reflects all other wavelengths, and a fiber coupling device collecting the M laser beams to produce a respective one of the N output beams. In an exemplary case, the M-1 dichroic filters function as band pass filters. A method of generating a high fluence, high power laser beam is also described.
    • 直接二极管激光器系统包括产生N个输出光束的N个激光头组件(LHA),N个光纤接收相应的N个输出光束并产生N个接收的输出光束,以及一个割枪头将N个接收的输出光束重新进行聚焦并聚焦在单个光点上。 优选地,直接二极管激光系统的每个激光头组件包括产生M个激光束的M个模块,其中M个激光束中的每一个具有相应的单波长光,M-1个二向色滤光器,其中M-1 二向色滤光器传输M个激光束中的相应一个并反射所有其它波长,以及收集M个激光束以产生N个输出光束中的相应一个的光纤耦合装置。 在示例性情况下,M-1二向色滤光器用作带通滤光器。 还描述了产生高能量,高功率激光束的方法。