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    LASER APPARATUS INCLUDING PLURALITY OF LASER MODULES
    2.
    发明申请
    LASER APPARATUS INCLUDING PLURALITY OF LASER MODULES 审中-公开

    公开(公告)号：US20180294618A1

    公开(公告)日：2018-10-11

    申请号：US15940350

    申请日：2018-03-29

    申请人： FANUC CORPORATION

    发明人： Ryuusuke Miyata ,  Hiroshi Takigawa

    IPC分类号： H01S3/131 ,  H01S3/23

    CPC分类号： H01S3/1305 ,  H01S3/005 ,  H01S3/1022 ,  H01S3/1306 ,  H01S3/131 ,  H01S3/1312 ,  H01S3/2383 ,  H01S5/0683 ,  H01S5/4012 ,  H01S5/4025

    摘要： A laser apparatus including plural laser modules, and capable of preventing a defect occurring when a number of the modules to be driven is changed. The apparatus includes plural laser modules, an optical output command section for generating a first optical output command with respect to a combined laser beam from a combiner, and a laser module selection/command section for selecting a laser module to be driven and generating a second optical output command for each laser module. The laser module selection/command section outputs the second optical output command, in a period from when the number is changed to when a predetermined period of time elapses, to at least one of the laser modules that has been laser-oscillating before the number is changed, such that the combined laser beam having an output corresponding to the first optical output command is outputted only by the at least one laser module.

    Method and Apparatus for Controlling Mode Coupling in High Power Laser System
    4.
    发明申请
    Method and Apparatus for Controlling Mode Coupling in High Power Laser System 有权
    用于控制大功率激光系统中耦合模式的方法和装置

    公开(公告)号：US20120281719A1

    公开(公告)日：2012-11-08

    申请号：US13099499

    申请日：2011-05-03

    申请人： Roman Yagodkin ,  Nikolai Plaonov ,  Mikhail Meleshkevich

    发明人： Roman Yagodkin ,  Nikolai Plaonov ,  Mikhail Meleshkevich

    IPC分类号： H01S3/30

    CPC分类号： H01S3/08045 ,  H01S3/0675 ,  H01S3/0804 ,  H01S3/131 ,  H01S3/139

    摘要： A high power fiber laser is configured with a multimode active fiber and input and output single mode passive fibers butt-spliced to respective opposite ends of the active fiber. If the input passive and active fibers do not have substantially matched diameters, a SM radiation coupled into the active fiber may excite fundamental and high order modes which, while interfering with one another, create a non-uniform distribution of refractive index in each of forward and backward light propagation directions along the resonator of the laser. The variable longitudinal perturbation components of the refractive index in respective forward and backward directions along an optical path in the active fiber are distributed in accordance with respective cosine functions. The length of the optical path is set so that the cosine functions of the respective perturbation components are shifted in a counter-phase position in which a cross-coupling coefficient between fundamental and high-order modes is substantially minimized. The optimal length of the optical path is maintained by controlling by either an ambient temperature or an electric field of piezo-element coupled to the MM active fiber. As a consequence, the disclosed high power fiber laser emits radiation in a fundamental mode having minimum power losses.

    摘要翻译： 高功率光纤激光器配置有多模有源光纤，并将输入和输出单模无源光纤对接到有源光纤的相对端。 如果输入的无源和有源光纤不具有基本上匹配的直径，则耦合到有源光纤中的SM辐射可以激发基本和高阶模式，其在相互干扰的同时在每个前向中产生不均匀的折射率分布 以及沿着激光器的谐振器的向后的光传播方向。 沿着有源光纤中的光路的相应的前后方向的折射率的可变纵向扰动分量根据相应的余弦函数分布。 光路的长度被设定为使得各个扰动分量的余弦函数在基本和高阶模之间的交叉耦合系数基本上最小化的相对位置中移位。 通过环境温度或耦合到MM有源光纤的压电元件的电场进行控制来维持光路的最佳长度。 因此，所公开的高功率光纤激光器以具有最小功率损耗的基本模式发射辐射。

    Wavelength tunable laser source with parameter correction
    6.
    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。

    Apparatus for monitoring the operating status of a laser
    7.
    发明申请
    Apparatus for monitoring the operating status of a laser 有权
    用于监视激光器的运行状态的装置

    公开(公告)号：US20050226288A1

    公开(公告)日：2005-10-13

    申请号：US10996641

    申请日：2004-11-23

    申请人： Daniel Ryan ,  Tom Pienkowski

    发明人： Daniel Ryan ,  Tom Pienkowski

    IPC分类号： G01J1/42 ,  H01S3/131 ,  H01S5/068 ,  H01S5/0683 ,  H01S3/13

    CPC分类号： G01J1/4257 ,  H01S3/131 ,  H01S3/1317

    摘要： The present invention provides an apparatus for monitoring a laser. The apparatus includes a plurality of sensors and a monitoring device capable of communicating with the plurality of sensors and configured to monitor an operating status of a laser. The plurality of sensors includes an optical power sensor, a first temperature sensor, and a power sensor and/or a current supply sensor. The present invention also provides a method for monitoring a laser. The method includes measuring an output optical power of the laser, measuring a temperature of the laser and/or a lasing medium exciting device, measuring an amount of current supplied to the exciting device and/or an amount of laser cavity excitation, and determining a current and/or predicted health status of the laser based on at least one of the optical power, the temperature of the laser, the temperature of the exciting device, the current and the driver power.

    摘要翻译： 本发明提供了一种用于监视激光的装置。 该装置包括多个传感器和能够与多个传感器通信并被配置为监视激光器的操作状态的监视装置。 多个传感器包括光功率传感器，第一温度传感器以及功率传感器和/或电流传感器。 本发明还提供了一种用于监视激光的方法。 该方法包括测量激光器的输出光功率，测量激光器和/或激光介质激发装置的温度，测量提供给激励装置的电流量和/或激光腔激发量，以及确定 基于光功率，激光器的温度，激励装置的温度，电流和驱动器功率中的至少一个，激光器的当前和/或预测的健康状况。

    Laser apparatus and image display using the same
    8.
    发明申请
    Laser apparatus and image display using the same 审中-公开
    激光设备和图像显示使用相同

    公开(公告)号：US20050069010A1

    公开(公告)日：2005-03-31

    申请号：US10947404

    申请日：2004-09-23

    申请人： Hideaki Okano ,  Masaki Tsuchida

    发明人： Hideaki Okano ,  Masaki Tsuchida

    IPC分类号： H01S3/06 ,  H01S3/067 ,  H01S3/131 ,  H01S3/16 ,  H01S3/091

    CPC分类号： H01S3/131 ,  H01S3/06716 ,  H01S3/094096 ,  H01S3/16 ,  H01S3/1616

    摘要： A laser apparatus according to this invention includes an optical resonator, which has a mirror capable of enclosing light with a required output wavelength and light with a first non-required output wavelength able to increase the efficiency of generating the light with the required output wavelength, in an optical fiber, at both ends of an optical fiber added with ions capable of generating light with a required output wavelength, and damping or discharging light with a second non-required output wavelength to suppress generation of light with the required output wavelength, to outside.

    摘要翻译： 根据本发明的激光装置包括光学谐振器，其具有能够包围具有所需输出波长的光的反射镜和具有能够增加产生具有所需输出波长的光的效率的第一非需要输出波长的光， 在光纤中，在添加有能够产生具有所需输出波长的光的离子的光纤的两端，以及阻尼或放电具有第二非需要输出波长的光以抑制具有所需输出波长的光的产生，以 外。