中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

27 records (took 0.023 seconds)

    Noise detection, diagnostics, and control of modelocked lasers
    13.
    发明授权
    Noise detection, diagnostics, and control of modelocked lasers 有权
    锁模激光器的噪声检测，诊断和控制

    公开(公告)号：US09048626B2

    公开(公告)日：2015-06-02

    申请号：US14484699

    申请日：2014-09-12

    Applicant: IMRA AMERICA, INC.

    Inventor： Ingmar Hartl ,  Christian Mohr

    IPC: H01S3/00 ,  H01S3/11 ,  H01S5/0687 ,  H01S5/0683 ,  H01S5/068 ,  H01S5/065

    CPC classification number: H01S3/1106 ,  H01S3/06754 ,  H01S3/1121 ,  H01S3/1305 ,  H01S3/1306 ,  H01S3/1312 ,  H01S3/136 ,  H01S5/065 ,  H01S5/0657 ,  H01S5/06817 ,  H01S5/06835 ,  H01S5/0687 ,  H01S2301/02

    Abstract: The present invention features a laser based system configured with a noise detection unit. The system includes a mode-locked oscillator. A noise detection unit includes at least one optical detector that monitors optical pulses generated by the mode-locked oscillator and produces an electrical signal in response to the optical pulses. The noise detection unit includes a first filter to transmit signal power over a signal bandwidth which includes the mode-locked laser repetition frequency, frep. The noise detection unit may include one or more filters to transmit power over a noise bandwidth that substantially excludes repetition frequency, frep. Non-linear signal processing equipment is utilized to generate one or more signals representative of the power in the signal bandwidth relative to the power in the noise bandwidth. The system includes a controller operable to generate a signal for controlling the laser based system based on the relative power.

    Abstract translation: 本发明的特征在于具有噪声检测单元的基于激光的系统。 该系统包括锁模振荡器。 噪声检测单元包括至少一个光检测器，其监测由锁模振荡器产生的光脉冲，并响应于光脉冲产生电信号。 噪声检测单元包括用于在包括锁模激光重复频率frep的信号带宽上传输信号功率的第一滤波器。 噪声检测单元可以包括一个或多个滤波器，以在基本上排除重复频率frep的噪声带宽上传输功率。 利用非线性信号处理设备产生一个或多个表示信号带宽中功率相对于噪声带宽中功率的信号。 该系统包括可操作以基于相对功率产生用于控制基于激光的系统的信号的控制器。

    Compact coherent high brightness light source for the mid-IR and far IR
    15.
    发明授权
    Compact coherent high brightness light source for the mid-IR and far IR 有权
    紧凑型相干高亮度光源，适用于中红外和远红外

    公开(公告)号：US08861555B2

    公开(公告)日：2014-10-14

    申请号：US13682309

    申请日：2012-11-20

    Applicant: IMRA America, Inc.

    Inventor： Martin E. Fermann ,  Jens Bethge ,  Ingmar Hartl

    IPC: H01S3/30 ,  H01S3/00 ,  G02B6/02

    CPC classification number: H01S3/0092 ,  G02B6/02038 ,  G02F1/3534 ,  G02F1/365 ,  G02F2001/3528 ,  H01S3/067 ,  H01S3/06725 ,  H01S3/094046 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/30 ,  H01S3/302

    Abstract: Compact laser systems are disclosed which include ultrafast laser sources in combination with nonlinear crystals or waveguides. In some implementations fiber based mid-IR sources producing very short pulses and/or mid-IR sources based on a mode locked fiber lasers are utilized. A difference frequency generator receives outputs from the ultrafast sources, and generates an output including a difference frequency. The output power from the difference frequency generator can further be enhanced via the implementation of large core dispersion shifted fibers. Exemplary applications of the compact, high brightness mid-IR light sources include medical applications, spectroscopy, ranging, sensing and metrology.

    Abstract translation: 公开了紧凑的激光系统，其包括与非线性晶体或波导组合的超快激光源。 在一些实现中，利用基于模式锁定光纤激光器产生非常短脉冲和/或中红外光源的基于光纤的中红外光源。 差频发生器接收来自超快源的输出，并产生包括差频的输出。 来自差分频率发生器的输出功率可以通过实施大型核心色散位移光纤进一步提高。 紧凑的高亮度中红外光源的示例性应用包括医疗应用，光谱学，测距，感测和计量学。

    PULSED LASER SOURCES
    18.
    发明申请
    PULSED LASER SOURCES 有权
    脉冲激光源

    公开(公告)号：US20170063015A1

    公开(公告)日：2017-03-02

    申请号：US15207959

    申请日：2016-07-12

    Applicant: IMRA America, Inc.

    Inventor： Martin E. Fermann ,  Ingmar Hartl ,  Gennady Imeshev

    IPC: H01S3/00 ,  H01S3/106 ,  G02F1/35 ,  H01S3/067 ,  H01S3/11

    CPC classification number: H01S3/0057 ,  G02F1/3517 ,  G02F2001/3528 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/067 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/094042 ,  H01S3/10 ,  H01S3/105 ,  H01S3/1053 ,  H01S3/106 ,  H01S3/1067 ,  H01S3/109 ,  H01S3/1106 ,  H01S3/1118 ,  H01S3/1616

    Abstract: Modelocked fiber laser resonators may be coupled with optical amplifiers. An isolator optionally may separate the resonator from the amplifier. A reflective optical element on one end of the resonator having a relatively low reflectivity may be employed to couple light from the resonator to the amplifier. Enhanced pulse-width control may be provided with concatenated sections of both polarization-maintaining and non-polarization-maintaining fibers. Apodized fiber Bragg gratings and integrated fiber polarizers may also be included in the laser cavity to assist in linearly polarizing the output of the cavity. Very short pulses with a large optical bandwidth may be obtained by matching the dispersion value of the grating to the inverse of the dispersion of the intra-cavity fiber. Frequency comb sources may be constructed from such modelocked fiber oscillators. Low dispersion and an in-line interferometer that provides feedback may assist in controlling the frequency components output from the comb source.

    Abstract translation: 模式锁定光纤激光谐振器可以与光放大器耦合。 隔离器可选地可以将谐振器与放大器分离。 可以采用具有相对低的反射率的谐振器的一端上的反射光学元件来将来自谐振器的光耦合到放大器。 可以提供增强的脉冲宽度控制，其具有两个偏振保持和非偏振保持光纤的级联部分。 变形光纤布拉格光栅和集成光纤偏振器也可以包括在激光腔中，以帮助线性偏振空腔的输出。 可以通过将光栅的色散值与腔内光纤的色散相反来获得具有大的光学带宽的非常短的脉冲。 频率梳源可以由这种锁模光纤振荡器构成。 提供反馈的低色散和在线干涉仪可以有助于控制从梳状源输出的频率分量。

Patent Agency Ranking