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    External cavity laser
    21.
    发明授权
    External cavity laser 有权
    外腔激光器

    公开(公告)号：US09190803B2

    公开(公告)日：2015-11-17

    申请号：US14453529

    申请日：2014-08-06

    申请人： Akonia Holographics, LLC

    发明人： Susan Hunter ,  Vladimir Krneta ,  Jason Ensher ,  Aaron Wegner

    IPC分类号： H01S3/105 ,  H01S3/08 ,  H01S3/1055 ,  H01S3/139 ,  H01S5/14 ,  H01S3/06 ,  H01S3/00 ,  H01S3/086

    CPC分类号： H01S3/1055 ,  H01S3/0014 ,  H01S3/0621 ,  H01S3/08009 ,  H01S3/08086 ,  H01S3/086 ,  H01S3/139 ,  H01S5/141

    摘要： Embodiments of systems and methods are provided for a tunable laser device. The tunable laser device may include a diffraction grating connected to a pivot arm that pivots the diffraction grating about a pivot point to tune the laser device. In pivoting the diffraction grating about the pivot point, both the wavelength to which the diffraction grating is tuned and the length of the optical cavity may be changed. The length of the pivot arm may be selected to reduce the number of mode hops of the tunable laser device when tuning the laser device over its tuning range.

    摘要翻译： 为可调激光器件提供了系统和方法的实施例。 可调谐激光装置可以包括连接到枢转臂的衍射光栅，枢轴臂围绕枢转点枢转衍射光栅以调谐激光装置。 在围绕枢转点枢转衍射光栅时，可以改变衍射光栅被调谐的波长和光学腔的长度。 可以选择枢转臂的长度以在调谐激光器件在其调谐范围上时减少可调激光器件的跳跃次数。

    LASER DISPLAYS
    22.
    发明申请
    LASER DISPLAYS 审中-公开
    激光显示

    公开(公告)号：US20110026559A1

    公开(公告)日：2011-02-03

    申请号：US12934641

    申请日：2009-04-02

    申请人： John Martin Bagshaw ,  Edward Lloyd Lewis

    发明人： John Martin Bagshaw ,  Edward Lloyd Lewis

    IPC分类号： H01S3/086 ,  H01S3/139

    CPC分类号： G02B27/48 ,  G02B26/0825 ,  G03H1/02 ,  G03H1/32 ,  G03H2001/0212 ,  G03H2222/24 ,  H01S3/08059 ,  H01S3/0815 ,  H01S3/094042 ,  H01S3/105 ,  H01S3/109 ,  H01S3/1673

    摘要： A laser is provided, suitable for use in laser displays, having a laser cavity defined by at least first and second mirrors, a lasing material positioned in an optical path within the cavity with an associated pumping source and wherein one of the mirrors has a reflective surface that is moveable so as to alter the length of the cavity at a rate sufficiently high to ensure that effects due to a speckle pattern, as perceived by an observer or detector of light generated by the laser, are reduced while preserving the instantaneous coherence of the laser light. Sufficiently rapid movement of the mirror surface ensures that any speckle pattern changes at a faster rate than can be detected by the human eye or by a detector so that speckle is no longer visible, or is at least considerably reduced.

    摘要翻译： 提供了适用于激光显示器的激光器，其具有由至少第一和第二反射镜限定的激光腔，激光材料定位在腔内的光路中，并具有相关联的泵浦源，并且其中一个反射镜具有反射 表面，其可移动以便以足够高的速率改变空腔的长度，以确保由观察者或由激光产生的光的检测器感知到的斑点图案的影响减小，同时保持瞬时相干性 激光灯。 镜表面的足够快速的运动确保任何斑点图案以比人眼或检测器可以检测到的更快的速率改变，使得斑点不再可见，或至少大大减少。

    Wavelength tunable laser source with parameter correction
    23.
    发明申请
    Wavelength tunable laser source with parameter correction 有权
    具有参数校正的波长可调激光源

    公开(公告)号：US20050232315A1

    公开(公告)日：2005-10-20

    申请号：US10504814

    申请日：2002-04-30

    申请人： Michael Schubert ,  Bernd Nebendahl ,  Emmerich Mueller ,  Ralf Haeussler ,  Wolf Steffens

    发明人： Michael Schubert ,  Bernd Nebendahl ,  Emmerich Mueller ,  Ralf Haeussler ,  Wolf Steffens

    IPC分类号： H01S3/131 ,  H01S3/136 ,  H01S3/139 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/14 ,  H01S3/10

    CPC分类号： H01S5/141 ,  H01S3/131 ,  H01S3/136 ,  H01S3/139 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/143

    摘要： A wavelength tunable laser unit has a laser mode selection, and is adapted to provide a laser signal in accordance with one or more laser control parameters. For operating the laser unit, the laser signal is swept in a wavelength range, a laser operation signal indicative of the laser unit's operation during the sweep is received, and the laser operation signal is analyzed for detecting an indication of a mode hop occurred in the generated laser signals during the sweep. At least one correction value is determined based on the detected mode hop indication, and at least one of the one or more laser control parameters, applicable for a next wavelength sweep, is modified based on the determined at least one correction value.

    摘要翻译： 波长可调激光单元具有激光模式选择，并且适于根据一个或多个激光控制参数提供激光信号。 为了操作激光单元，激光信号在波长范围内扫描，接收指示扫描期间激光单元操作的激光操作信号，并且分析激光操作信号以检测在 在扫描期间产生激光信号。 基于检测到的模式跳跃指示来确定至少一个校正值，并且基于所确定的至少一个校正值来修改适用于下一个波长扫描的一个或多个激光控制参数中的至少一个。

    Capacitance position sensor and position controller equipped with the sensor
    24.
    发明授权
    Capacitance position sensor and position controller equipped with the sensor 失效
    电容位置传感器和位置控制器配有传感器

    公开(公告)号：US06861848B2

    公开(公告)日：2005-03-01

    申请号：US10279846

    申请日：2002-10-25

    申请人： Yuji Kasai ,  Hirokazu Nosato ,  Masahiro Murakawa ,  Taro Itatani ,  Tetsuya Higuchi

    发明人： Yuji Kasai ,  Hirokazu Nosato ,  Masahiro Murakawa ,  Taro Itatani ,  Tetsuya Higuchi

    IPC分类号： G01D5/24 ,  G01D5/241 ,  H01S3/086 ,  H01S3/105 ,  H01S3/139 ,  G01R27/26

    CPC分类号： G01D5/24 ,  G01D5/2417 ,  H01S3/105

    摘要： A capacitance position sensor includes a pair of opposed tabular electrodes, an LC oscillator circuit having a toroidal core winding and whose oscillating frequency varies with change in capacitance between the pair of electrodes, and an arithmetic processing unit for calculating an absolute value of a distance between the electrodes from the oscillating frequency of the oscillator circuit. A position controller includes a stationary member formed with one electrode of the pair of electrodes of the position sensor, a movable member on which the other electrode of the pair of electrodes is formed, and moving device for moving the movable member relative to the stationary member.

    摘要翻译： 电容位置传感器包括一对相对的平板电极，具有环形铁芯绕组的振荡频率随着一对电极之间的电容变化而变化的LC振荡器电路，以及运算处理单元，用于计算在一对电极之间的距离的绝对值 电极从振荡电路的振荡频率。 位置控制器包括：固定构件，其形成有位置传感器的一对电极的一个电极，形成有该对电极的另一个电极的可动构件;以及用于使可动构件相对于固定构件移动的移动装置 。

    Optical bandpass filter using long period gratings
    25.
    发明授权
    Optical bandpass filter using long period gratings 有权
    光带通滤波器采用长周期光栅

    公开(公告)号：US06845194B2

    公开(公告)日：2005-01-18

    申请号：US10167684

    申请日：2002-06-11

    申请人： Siddharth Ramachandran

    发明人： Siddharth Ramachandran

    IPC分类号： G02B6/12 ,  G02B6/14 ,  G02B6/255 ,  G02B6/34 ,  H01S3/067 ,  H01S3/139 ,  H01S3/08 ,  H04J14/02

    CPC分类号： G02B6/02095 ,  G02B6/12007 ,  G02B6/14 ,  G02B6/255 ,  G02B6/29319 ,  G02B6/29389 ,  G02B6/4215 ,  G02B2006/12107 ,  H01S3/0675 ,  H01S3/08027 ,  H01S3/139

    摘要： The specification describes an optical filter wherein long period gratings (LPGs) are used in a new configuration to provide in-line bandpass filtering of optical signals. In the basic embodiment, two dissimilar LPGs are installed in the optical fiber transmission line. The first LPG converts light, over a broad wavelength range, being transmitted in the fundamental, or LP01, mode of the optical fiber transmission line into light in a higher order mode (HOM) of the optical fiber. The mode-converted signal, with mode LPm,n, is then coupled to a second waveguide, the second waveguide having transmission characteristics different from those of the first. The second waveguide supports propagation of light in a LPm,n mode. The mode-converted signal is then transmitted through a second LPG where the signal over a selected narrow band of wavelengths that is accepted by the second LPG is converted back to a LP01 mode. The selected narrow band in the LP01 mode propagates efficiently over the remainder of the optical fiber transmission path.

    摘要翻译： 本说明书描述了一种滤光器，其中在新配置中使用长周期光栅（LPG），以提供光信号的线内带通滤波。 在基本实施例中，在光纤传输线路中安装两个不同的LPG。 第一LPG将在光纤传输线的基本或LP01模式中的宽波长范围内的光转换成光纤的高阶模式（HOM）的光。 模式转换后的信号，模式LPm，n，然后耦合到第二波导，第二波导具有不同于第一波导的传输特性。 第二个波导支持LPm，n模式下的光的传播。 然后通过第二LPG传输经模式转换的信号，其中由第二LPG接受的选定的窄波段上的信号被转换回LP01模式。 LP01模式中所选择的窄带在光纤传输路径的其余部分有效传播。

    High efficiency high repetition rate, intra-cavity tripled diode pumped solid state laser
    27.
    发明授权
    High efficiency high repetition rate, intra-cavity tripled diode pumped solid state laser 失效
    高效率高重复率，腔内三倍体二极管泵浦固体激光器

    公开(公告)号：US6002695A

    公开(公告)日：1999-12-14

    申请号：US656371

    申请日：1996-05-31

    申请人： Anthony J. Alfrey ,  Ed Sinofsky

    发明人： Anthony J. Alfrey ,  Ed Sinofsky

    IPC分类号： H01S3/094 ,  G02F1/35 ,  H01S3/042 ,  H01S3/06 ,  H01S3/08 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/117 ,  H01S3/139 ,  H01S3/10

    CPC分类号： H01S3/109 ,  G02F2001/354 ,  H01S3/025 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0606 ,  H01S3/08072 ,  H01S3/0941

    摘要： A diode pumped laser wherein third harmonic generation at 355 nm is obtained from an intra-cavity-tripled diode-pumped Nd:YVO4 crystal utilizing an angle-tuned LBO doubler and tripler, and operated at high repetition rates and good overall efficiency. An average UV power of over 2 watts at 30 kHz and 1 watt at 100 kHz is typically obtained with a 20 watt diode array "bar" side-pumping a one percent (1%) Nd:YVO4 (vanadate) slab. The device utilizes room temperature intra-cavity doubling and takes advantage of a small beam waist at the doubler and tripler required with low-power CW diode pumping.

    摘要翻译： 二极管泵浦激光器，其中355nm处的三次谐波产生是利用角度调节的LBO倍增器和三倍频器从腔内三倍的二极管泵浦的Nd：YVO4晶体获得的，并以高重复率和良好的总体效率运行。 通常用20瓦二极管阵列“棒”侧泵浦1％（1％）Nd：YVO4（钒酸盐）板获得在30kHz下的2瓦特的平均UV功率和100kHz时的1瓦特。 该器件利用室温腔内倍增，并利用低功率CW二极管泵浦所需的双倍和三倍的小波束腰部。

    Laser pulse oscillator
    29.
    发明授权
    Laser pulse oscillator 失效
    激光脉冲振荡器

    公开(公告)号：US5926492A

    公开(公告)日：1999-07-20

    申请号：US919354

    申请日：1997-08-28

    申请人： Eiji Yoshida ,  Masataka Nakazawa

    发明人： Eiji Yoshida ,  Masataka Nakazawa

    IPC分类号： G02B26/00 ,  G02F1/01 ,  H01S3/06 ,  H01S3/067 ,  H01S3/098 ,  H01S3/139 ,  H04B10/00 ,  H04B10/508 ,  H04B10/524 ,  H04B10/54 ,  H04B10/564 ,  H01S3/07 ,  H01S3/10

    CPC分类号： H01S3/06791 ,  H01S3/1109 ,  H01S3/1121 ,  H01S3/1394

    摘要： A harmonically and regeneratively mode-locked laser pulse oscillator having a clock extraction circuit for picking up from a fragment of a laser output a clock signal corresponding to a high-order integer multiple of the fundamental frequency determined by the cavity length of the laser, a phase shifter and an electric amplifier for driving an optical modulator disposed in the laser cavity at the frequency of the clock signal. The laser pulse oscillator has a phase-locked loop including a phase comparator for detecting the phase difference between the clock signal and an external signal fed from a synthesizer with its frequency fixed, a fiber stretcher for controlling the cavity length such that the repetition rate frequency of the laser pulse oscillator is locked to the external signal, and an electric filter and electric amplifier for expanding and contracting the fiber length by feeding back the phase difference detected by the phase comparator to the fiber stretcher. This makes it possible to lock the repetition rate frequency of the optical pulse train to the external signal, and to generate the stabilized, fixed frequency optical pulse train with a high repetition rate over a long time period.

    摘要翻译： 具有用于从激光片拾取的时钟提取电路的谐振和再生模式锁定激光脉冲振荡器输出对应于由激光器的腔体长度确定的基频的高次整数倍的时钟信号， 移相器和用于以时钟信号的频率驱动设置在激光器腔中的光学调制器的电放大器。 激光脉冲振荡器具有锁相环，该锁相环包括用于检测时钟信号与从其频率固定的合成器馈送的外部信号之间的相位差的相位比较器，用于控制腔体长度的光纤拉伸器，使得重复频率频率 的激光脉冲振荡器被锁定到外部信号，以及电滤波器和电放大器，用于通过将相位比较器检测到的相位差反馈到光纤拉伸器来扩展和收缩光纤长度。 这使得可以将光脉冲串的重复率频率锁定到外部信号，并且可以在长时间段内产生具有高重复率的稳定的固定频率光脉冲串。