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    Fiber laser device
    3.
    发明授权
    Fiber laser device 有权
    光纤激光装置

    公开(公告)号：US08446923B2

    公开(公告)日：2013-05-21

    申请号：US13467362

    申请日：2012-05-09

    申请人： Yasuhiro Oba ,  Michihiro Nakai

    发明人： Yasuhiro Oba ,  Michihiro Nakai

    IPC分类号： H01S3/30 ,  H01S3/10 ,  H01S3/13 ,  H01S3/00

    CPC分类号： H01S3/2308 ,  G02F1/353 ,  G02F1/37 ,  H01S3/0078 ,  H01S3/0092 ,  H01S3/06754 ,  H01S3/10007 ,  H01S3/10092 ,  H01S3/1022 ,  H01S3/1301 ,  H01S3/302

    摘要： When an output instruction is input to the control unit, the control unit controls the seed laser light source and the pumping light source to be either in a pre-pumped state or in an output state. In the pre-pumped state, laser light is not output from the seed laser light source, and pumping light with a predetermined intensity based on a laser light intensity set by the output setting unit is output from the pumping light source for a certain period of time. In the output state, laser light is output from the seed laser light source, and pumping light is output from the pumping light source, so that laser light with the intensity set by the output setting unit is output.

    摘要翻译： 当输出指令输入到控制单元时，控制单元控制种子激光光源和泵浦光源处于预泵状态或输出状态。 在预泵浦状态下，激光不从种子激光光源输出，并且基于由输出设定单元设定的激光强度的预定强度的泵浦光从泵浦光源输出一定时间 时间。 在输出状态下，从种子激光光源输出激光，从泵浦光源输出泵浦光，从而输出由输出设定部设定的强度的激光。

    Multi-mode optical coupler
    4.
    发明授权
    Multi-mode optical coupler 有权
    多模光耦合器

    公开(公告)号：US07693367B2

    公开(公告)日：2010-04-06

    申请号：US12273744

    申请日：2008-11-19

    申请人： Michihiro Nakai

    发明人： Michihiro Nakai

    IPC分类号： G02B6/26 ,  G02B6/42

    CPC分类号： G02B6/2835

    摘要： A multi-mode optical coupler which includes an integrated section in which two optical fibers are fused and integrated together, at least one of these optical fibers being a multi-mode fiber, the multi-mode optical coupler coupling multi-mode light carried in the one of the multi-mode fibers to the other of the optical fibers, wherein: assuming that an outline of the integrated section in a plane view of the optical coupler is a function of a position along the longitudinal direction of the fibers, the multi-mode optical coupler has a plurality of inflection points along the outline; the multi-mode optical coupler satisfies: in an area between the farthermost inflection points includes: the length of the area between the inflection points is not more than 2 mm and an outer diameter h2 of the optical fibers along the direction in which the optical fibers are arranged in parallel is in the range of 70% to 80% of a sum of the outer diameters of the optical fibers; or the length of the area between the inflection points is not less than 1 mm and not more than 2 mm and the outer diameter h2 is in the ranges of 50% to 70% and 80% to 90% of the sum of the outer diameters of the optical fibers.

    摘要翻译： 一种多模光耦合器，其包括集成部分，其中两个光纤熔合并集成在一起，这些光纤中的至少一个是多模光纤，多模光耦合器耦合多模光 光纤中另一个的多模光纤之一，其中：假设光耦合器的平面图中的集成部分的轮廓是沿着光纤的纵向方向的位置的函数， 模式光耦合器沿着轮廓具有多个拐点; 多模光耦合器满足：在最远的拐点之间的区域包括：拐点之间的区域的长度不大于2mm，光纤的沿着光纤的方向的外径h2 平行布置在光纤的外径之和的70％至80％的范围内; 或拐点之间的区域的长度不小于1mm且不大于2mm，外径h2在外径之和的50％至70％的范围内，80％至90％ 的光纤。

    Multi-port coupler, optical amplifier, and fiber laser
    5.
    发明授权
    Multi-port coupler, optical amplifier, and fiber laser 有权
    多端口耦合器，光放大器和光纤激光器

    公开(公告)号：US07492993B2

    公开(公告)日：2009-02-17

    申请号：US11755681

    申请日：2007-05-30

    申请人： Michihiro Nakai ,  Tetsuya Sakai

    发明人： Michihiro Nakai ,  Tetsuya Sakai

    IPC分类号： G02B6/26

    CPC分类号： G02B6/2835 ,  H01S3/06729 ,  H01S3/094007 ,  H01S3/094015 ,  H01S3/094053 ,  H01S3/09415

    摘要： A multi-port coupler for coupling an pumping light source to a cladding pump fiber for optical amplification, includes a central signal fiber and a plurality of pumping fibers arranged around the central signal fiber, the central signal fiber and the plurality of pumping fibers being unified and a front side is reduced in diameter, wherein an emitted light confining waveguide part is provided around a core of the signal fiber located at the center, and the emitted light confining waveguide part whose outer diameter is larger than that of the core has a higher refractive index than a cladding and a lower refractive index than the core and the emitted light confining waveguide part is formed continuously from a splicing point of the cladding pump fiber to a coupler front end branched into multiple fibers.

    摘要翻译： 用于将泵浦光源耦合到用于光放大的包层泵浦光纤的多端口耦合器包括中心信号光纤和围绕中心信号光纤布置的多个泵浦光纤，中心信号光纤和多个泵浦光纤被统一 并且前侧的直径减小，其中发射的光限制波导部分设置在位于中心的信号光纤的芯周围，并且外径大于芯的发射光限制波导部分具有较高的 从包层泵浦纤维的拼接点到分支成多个纤维的耦合器前端连续地形成比包层折射率低且折射率低于芯部和发射的光限制波导部分的折射率。

    Laser device
    6.
    发明授权
    Laser device 有权
    激光设备

    公开(公告)号：US09020007B2

    公开(公告)日：2015-04-28

    申请号：US13837121

    申请日：2013-03-15

    申请人： Michihiro Nakai

    发明人： Michihiro Nakai

    IPC分类号： H01S3/10 ,  H01S3/06 ,  H01S3/23 ,  H01S3/094 ,  H01S3/17

    CPC分类号： H01S3/10084 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/094053 ,  H01S3/176 ,  H01S3/2308

    摘要： An object of the invention is to provide a laser device having high optical amplification efficiency. A laser device includes: an optical fiber which includes a core and a clad and through which seed light and pumping light propagate; and a glass rod which is doped with rare earth elements, has a diameter larger than that of the core, wherein the seed light and the pumping light output from the optical fiber are input to the glass rod to have increased diameters, and output light including at least the amplified seed light is output from the glass rod.

    摘要翻译： 本发明的目的是提供一种具有高光放大效率的激光装置。 激光装置包括：光纤，其包括芯和包层，并且种子光和泵浦光通过该光纤传播; 并且掺杂有稀土元素的玻璃棒的直径大于芯的直径，其中从光纤输出的种子光和泵浦光被输入到玻璃棒以具有增加的直径，并且输出包括 至少放大的种子光从玻璃棒输出。

    High-power pulsed light generator
    7.
    发明授权
    High-power pulsed light generator 有权
    大功率脉冲光发生器

    公开(公告)号：US08867123B2

    公开(公告)日：2014-10-21

    申请号：US13605535

    申请日：2012-09-06

    申请人： Michihiro Nakai ,  Yasuhiro Oba

    发明人： Michihiro Nakai ,  Yasuhiro Oba

    IPC分类号： H04B10/17 ,  H01S5/00 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/102 ,  H01S3/094 ,  H01S5/068

    CPC分类号： H01S3/06754 ,  H01S3/094011 ,  H01S3/09415 ,  H01S3/1024 ,  H01S5/06825

    摘要： A high-power pulse light generator includes: a master oscillator generating oscillated pulse light in synchronization with a master clock signal; an optical amplifier amplifying the oscillated pulse light output from the master oscillator and outputting high-power pulsed light; a driving unit driving a pumping semiconductor laser in synchronization with the master clock signal; and a control unit controlling the driving unit so that the driving current to be supplied to the pumping semiconductor laser becomes lower than or equal to a set value at which the pumping semiconductor laser is not in a laser oscillation state when returning light from an irradiated body with the high-power pulsed light reaches the pumping semiconductor laser connected to the optical amplifier, the control unit determining a timing of the control in accordance with an optical path length between the irradiated body and the pumping semiconductor laser.

    摘要翻译： 大功率脉冲光发生器包括：主振荡器，与主时钟信号同步产生振荡的脉冲光; 放大从主振荡器输出的振荡脉冲光并输出大功率脉冲光的光放大器; 驱动单元，与主时钟信号同步地驱动泵浦半导体激光器; 以及控制单元，其控制所述驱动单元，使得提供给所述泵浦半导体激光器的驱动电流变为低于或等于当从被照射体返回光时所述泵浦半导体激光器不处于激光振荡状态的设定值 利用高功率脉冲光到达连接到光放大器的泵浦半导体激光器，控制单元根据照射体与泵浦半导体激光器之间的光程长度确定控制的定时。

    Optical amplifier and resonator
    8.
    发明授权
    Optical amplifier and resonator 有权
    光放大器和谐振器

    公开(公告)号：US08509580B2

    公开(公告)日：2013-08-13

    申请号：US12693821

    申请日：2010-01-26

    申请人： Yoshikiyo Noguchi ,  Michihiro Nakai

    发明人： Yoshikiyo Noguchi ,  Michihiro Nakai

    IPC分类号： G02B6/32 ,  G02B6/00 ,  H01S3/30

    CPC分类号： G02B6/32 ,  G02B6/02047 ,  H01S3/061 ,  H01S3/094053 ,  H01S3/094057 ,  H01S3/2308 ,  H01S3/2333

    摘要： An optical amplifier includes: a first optical fiber, through which seed light and excitation light propagate; an optical coupler that inputs the excitation light into the first optical fiber; a first lens to which the seed light and the excitation light output from the first optical fiber are input and which increases diameters of the seed light and the excitation light; a glass rod doped with rare earth elements to be excited by the excitation light, to which the seed light and the excitation light output from the first lens are input and which amplifies and outputs the seed light as output light; a second lens to which at least the output light output from the glass rod is input and which decreases a diameter of the output light; and a second optical fiber to which the output light output from the second lens is input.

    摘要翻译： 光放大器包括：第一光纤，种子光和激发光通过该第一光纤传播; 将激发光输入到第一光纤中的光耦合器; 输入从第一光纤输出的种子光和激发光的第一透镜，并增加种子光和激发光的直径; 掺杂有被激发光激发的稀土元素的玻璃棒，从第一透镜输出的种子光和激发光被输入，并且放大并输出种子光作为输出光; 输入至少从玻璃棒输出的输出光的第二透镜，并减小输出光的直径; 以及输入从第二透镜输出的输出光的第二光纤。

    Laser device
    9.
    发明授权
    Laser device 失效
    激光设备

    公开(公告)号：US08442089B2

    公开(公告)日：2013-05-14

    申请号：US12767330

    申请日：2010-04-26

    申请人： Michihiro Nakai

    发明人： Michihiro Nakai

    IPC分类号： H01S3/091

    CPC分类号： H01S3/10084 ,  H01S3/061 ,  H01S3/0612 ,  H01S3/094053 ,  H01S3/176 ,  H01S3/2308

    摘要： [Object] An object of the invention is to provide a laser device having high optical amplification efficiency.[Solving Means] A laser device 100 includes: an optical fiber 20 which includes a core 21 and a clad 22 and through which seed light and pumping light propagate; and a glass rod 50 which is doped with rare earth elements, has a diameter larger than that of the core 21, wherein the seed light and the pumping light output from the optical fiber 20 are input to the glass rod 50 to have increased diameters, and output light including at least the amplified seed light is output from the glass rod 50.

    摘要翻译： 本发明的目的是提供一种具有高光放大效率的激光装置。 [解决方案]激光装置100包括：光纤20，其包括芯21和包层22，并且种子光和泵浦光通过该光纤传播; 并且掺杂有稀土元素的玻璃棒50的直径大于芯21的直径，其中将种子光和从光纤20输出的泵浦光输入到玻璃棒50以具有增加的直径， 并且从玻璃棒50输出至少包括放大的种子光的输出光。