Apparatus for protecting powered optical amplifiers

    公开(公告)号:US09608398B2

    公开(公告)日:2017-03-28

    申请号:US14185479

    申请日:2014-02-20

    Inventor: Albin L. Kasper

    Abstract: The present application is directed to an optical apparatus including an optical waveguide configured to receive an optical signal at an input wavelength. The apparatus also includes one or more optical pump sources connected to transmit pump light to the optical gain medium for the optical gain medium to amplify the optical signal. The apparatus also includes an optical feedback loop for a protection wavelength that includes the optical gain medium and at least a portion of the optical waveguide. A round-trip optical gain of the optical feedback loop is higher at an optical wavelength of the pump light than at the input wavelength less than unity in the presence of the optical signal. In addition, the round-trip gain of the optical feedback loop is greater than or equal to unity in the absence of the optical signal.

    Femtosecond laser apparatus and femtosecond laser system including the same
    2.
    发明授权
    Femtosecond laser apparatus and femtosecond laser system including the same 有权
    飞秒激光装置和飞秒激光系统包括相同的

    公开(公告)号:US08891564B2

    公开(公告)日:2014-11-18

    申请号:US13753512

    申请日:2013-01-29

    Abstract: There is disclosed a femtosecond laser apparatus including a first laser material comprising Ng, Np and Nm axes spatially perpendicular to each other; a second laser material comprising Np axis, Nm axis and Ng axis; and a first laser diode and second laser diodes, wherein the traveling direction of laser beams generated from the first and second laser materials is substantially parallel to Ng axis of the first laser material and the polarizing direction of laser beams generated from the first and second laser materials is substantially parallel to Np axis of the first laser material, and the traveling direction of laser beams generated from the first and second laser materials is substantially parallel to Np axis of the second material and the polarizing direction of laser beams generated from the first and second laser materials is substantially parallel to Nm axis of the second laser material.

    Abstract translation: 公开了一种飞秒激光装置,其包括:第一激光材料,其包括彼此空间垂直的Ng,Np和Nm轴; 包括Np轴,Nm轴和Ng轴的第二激光材料; 以及第一激光二极管和第二激光二极管,其中从第一和第二激光材料产生的激光束的行进方向基本上平行于第一激光材料的Ng轴和从第一和第二激光器产生的激光束的偏振方向 材料基本上平行于第一激光材料的Np轴,并且从第一和第二激光材料产生的激光束的行进方向基本上平行于第二材料的Np轴和从第一和第二激光材料产生的激光束的偏振方向 第二激光材料基本上平行于第二激光材料的Nm轴。

    Display device, method for driving the same, and electronic device
    4.
    发明授权
    Display device, method for driving the same, and electronic device 有权
    显示装置,其驱动方法以及电子装置

    公开(公告)号:US08723767B2

    公开(公告)日:2014-05-13

    申请号:US13847923

    申请日:2013-03-20

    Abstract: A display device including a display unit including first and second lines, light emitting elements and pixel circuits; a first drive unit sequentially applying a selection pulse to the first lines; and a second drive unit applying a signal pulse including first to third voltages to each of the second lines. Each of the pixel circuits includes a first transistor sampling the signal pulse, and a second transistor driving one of the light emitting elements. The first drive unit applies the selection pulse when the first voltage is being applied by the second drive unit, before a correction of a threshold voltage of the second transistor is initiated and within a period that the one of the light emitting elements is being turned out, and the first drive unit applies the selection pulse when the second voltage is being applied by the second drive unit.

    Abstract translation: 一种显示装置,包括包括第一和第二行的显示单元,发光元件和像素电路; 第一驱动单元,顺序地向第一行施加选择脉冲; 以及第二驱动单元,将包括第一至第三电压的信号脉冲施加到每个第二线。 每个像素电路包括对信号脉冲进行采样的第一晶体管和驱动发光元件之一的第二晶体管。 第一驱动单元在第二驱动单元施加第一电压时施加选择脉冲,在第二晶体管的阈值电压的校正开始之前,并且在发光元件的一个被退出的时段内 并且当第二驱动单元施加第二电压时,第一驱动单元施加选择脉冲。

    FEMTOSECOND LASER APPARATUS AND FEMTOSECOND LASER SYSTEM INCLUDING THE SAME
    5.
    发明申请
    FEMTOSECOND LASER APPARATUS AND FEMTOSECOND LASER SYSTEM INCLUDING THE SAME 有权
    FEMTOSECOND激光设备和包括它们的FEMTOSECOND激光系统

    公开(公告)号:US20130336345A1

    公开(公告)日:2013-12-19

    申请号:US13753512

    申请日:2013-01-29

    Abstract: There is disclosed a femtosecond laser apparatus including a first laser material comprising Ng, Np and Nm axes spatially perpendicular to each other; a second laser material comprising Np axis, Nm axis and Ng axis; and a first laser diode and second laser diodes, wherein the traveling direction of laser beams generated from the first and second laser materials is substantially parallel to Ng axis of the first laser material and the polarizing direction of laser beams generated from the first and second laser materials is substantially parallel to Np axis of the first laser material, and the traveling direction of laser beams generated from the first and second laser materials is substantially parallel to Np axis of the second material and the polarizing direction of laser beams generated from the first and second laser materials is substantially parallel to Nm axis of the second laser material.

    Abstract translation: 公开了一种飞秒激光装置,其包括:第一激光材料,其包括彼此空间垂直的Ng,Np和Nm轴; 包括Np轴,Nm轴和Ng轴的第二激光材料; 以及第一激光二极管和第二激光二极管,其中从第一和第二激光材料产生的激光束的行进方向基本上平行于第一激光材料的Ng轴和从第一和第二激光器产生的激光束的偏振方向 材料基本上平行于第一激光材料的Np轴,并且从第一和第二激光材料产生的激光束的行进方向基本上平行于第二材料的Np轴和从第一和第二激光材料产生的激光束的偏振方向 第二激光材料基本上平行于第二激光材料的Nm轴。

    Apparatus and method for receiving electromagnetic waves using photonics
    7.
    发明授权
    Apparatus and method for receiving electromagnetic waves using photonics 有权
    使用光子学接收电磁波的装置和方法

    公开(公告)号:US08228228B2

    公开(公告)日:2012-07-24

    申请号:US12754681

    申请日:2010-04-06

    CPC classification number: G01S13/18 G01S7/12 G01S7/415 G01S13/524 H01S3/1302

    Abstract: An apparatus and method for receiving electromagnetic waves using photonics includes a transmission unit transmitting electromagnetic waves in intervals; a time delay unit coupled to the transmission unit and controlling the transmission unit to transmit the electromagnetic waves in the intervals; an antenna receiving the electromagnetic waves reflected from the target; an interferoceiver coupled to the antenna and receiving the electromagnetic waves from the antenna, the interferoceiver comprising an optical recirculation loop to produce replica electromagnetic waves; and a computer identifying the target from the reflected electromagnetic waves.

    Abstract translation: 使用光子学接收电磁波的装置和方法包括间隔地传送电磁波的传输单元; 耦合到所述发送单元的时间延迟单元,并且控制所述发送单元以所述间隔发送所述电磁波; 接收从目标反射的电磁波的天线; 干涉器,其耦合到所述天线并且接收来自所述天线的电磁波,所述干涉器包括光学再循环回路以产生复制电磁波; 以及从反射的电磁波识别目标的计算机。

    LASER MODULE
    8.
    发明申请
    LASER MODULE 有权
    激光模块

    公开(公告)号:US20120014402A1

    公开(公告)日:2012-01-19

    申请号:US13256657

    申请日:2010-05-21

    Abstract: A laser module LM is provided with a quantum cascade laser 1, a tubular member 5, and an infrared detector 7. The tubular member 5 has a pair of opening ends 5a, 5b and is arranged so that one opening end 5a is opposed to a face 1b opposed to an emitting end face 1a of the quantum cascade laser 1. The infrared detector 7 is arranged so as to be opposed to the other opening end 5b of the tubular member 5. Light emitted from the face (rear end face) 1b opposed to the emitting end face (front end face) 1a of the quantum cascade laser 1 is guided inside the tubular member 5 to enter the infrared detector 7, and then is detected.

    Abstract translation: 激光模块LM设置有量子级联激光器1,管状部件5和红外线检测器7.管状部件5具有一对开口端部5a,5b,并且布置成使得一个开口端部5a与 面1b与量子级联激光器1的发射端面1a相对。红外线检测器7被布置成与管状部件5的另一个开口端5b相对。从面(后端面)1b发射的光 与量子级联激光器1的发射端面(前端面)1a相对的方向被引导到管状部件5内,进入红外线检测器7,然后被检测。

    OPTICAL AMPLIFIER
    10.
    发明申请
    OPTICAL AMPLIFIER 有权
    光放大器

    公开(公告)号:US20110058251A1

    公开(公告)日:2011-03-10

    申请号:US12878253

    申请日:2010-09-09

    Inventor: Tomoaki TAKEYAMA

    Abstract: An optical amplifier includes a rare-earth doped optical fiber for receiving input light through one end and outputting output light through another end, the input light being input from an input port; an excitation light source for generating excitation light; an optical coupler for supplying the generated excitation light to the one end and/or the another end of the rare-earth doped optical fiber; and a reflector for reflecting an amplified spontaneous emission light out of a signal band traveling in opposite direction to the input light, the amplified spontaneous emission light being generated in the rare-earth doped optical fiber.

    Abstract translation: 光放大器包括:稀土掺杂光纤,用于通过一端接收输入光,并通过另一端输出输出光,输入光从输入端口输入; 用于产生激发光的激发光源; 用于将产生的激发光提供给稀土掺杂光纤的一端和/或另一端的光耦合器; 以及反射器,用于从与输入光相反的方向行进的信号带反射放大的自发发射光,在稀土掺杂光纤中产生放大的自发发射光。

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