-
公开(公告)号：US08340487B2
公开(公告)日：2012-12-25
申请号：US12109612
申请日：2008-04-25
CPC分类号： H01S3/06716 , C03B37/01838 , C03B37/01853 , C03B2201/12 , C03B2201/31 , C03B2201/36 , C03B2203/23 , C03C13/045 , C03C13/046 , G02B6/03633 , G02B6/03638
摘要： A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the absorption band which appears around a wavelength of 976 nm in the absorption band by ytterbium contained in the core shows a peak absorption coefficient of 800 dB/m or less.
摘要翻译： 本发明的稀土掺杂的芯光纤包括包含至少含有铝和镱的二氧化硅玻璃的芯和在芯周围设置的包层，其包含比芯的折射率低的石英玻璃，其中 芯的铝浓度为2质量％以上，并且以这样的浓度将镱掺杂到芯中，使得在芯中包含的镱的吸收带中出现的波长976nm附近的吸收带表现出峰 吸收系数为800dB / m以下。
-
公开(公告)号：US20100276822A1
公开(公告)日：2010-11-04
申请号：US12837109
申请日：2010-07-15
IPC分类号： B29D11/00
CPC分类号： H01S3/06716 , C03B37/01838 , C03B37/01853 , C03B2201/12 , C03B2201/31 , C03B2201/36 , C03B2203/23 , C03C13/045 , C03C13/046 , G02B6/03633 , G02B6/03638
摘要： A rare earth-doped core optical fiber of the present invention includes a core comprising a silica glass containing at least aluminum and ytterbium, and a clad provided around the core and comprising a silica glass having a lower refraction index than that of the core, wherein the core has an aluminum concentration of 2% by mass or more, and ytterbium is doped into the core at such a concentration that the absorption band which appears around a wavelength of 976 nm in the absorption band by ytterbium contained in the core shows a peak absorption coefficient of 800 dB/m or less.
摘要翻译： 本发明的稀土掺杂的芯光纤包括包含至少含有铝和镱的二氧化硅玻璃的芯和在芯周围设置的包层，其包含比芯的折射率低的石英玻璃，其中 芯的铝浓度为2质量％以上，并且以这样的浓度将镱掺杂到芯中，使得在芯中包含的镱的吸收带中出现的波长976nm附近的吸收带表现出峰 吸收系数为800dB / m以下。
-
公开(公告)号：US5949934A
公开(公告)日：1999-09-07
申请号：US823629
申请日：1997-03-26
申请人： Kensuke Shima , Michihiro Nakai , Hiroshi Hidaka , Kuniharu Himeno , Satoshi Okude , Akira Wada , Masaaki Sudoh , Tetsuya Sakai , Takuya Ienaka , Ryozo Yamauchi
发明人： Kensuke Shima , Michihiro Nakai , Hiroshi Hidaka , Kuniharu Himeno , Satoshi Okude , Akira Wada , Masaaki Sudoh , Tetsuya Sakai , Takuya Ienaka , Ryozo Yamauchi
CPC分类号： G02B6/124 , G02B6/021 , G02B6/0218 , G02B6/0219
摘要： An optical waveguide grating with radiative mode-coupling properties, with exceptional stability and reliability as an optical component, wherein the central wavelength of the rejection band has a low temperature dependence, due to the use of silica glass doped with germanium and boron for the core. The rejection bandwidth can be narrowed without increasing the grating length by forming the radiative mode-coupled optical waveguide grating in an optical waveguide wherein the mean relative refractive index difference of the core is greater than that of optical communication waveguides. The rejection can be increased by reducing the occurrence of cases wherein propagation modes of the core coupled to cladding modes once again couple to the core in palnar optical waveguide gratings formed by making periodic changes in the waveguide structure along the direction of propagation of light in an optical waveguide having a cladding with a lower refractive index than the core surrounding the core, by making the thickness of the cladding at least thirteen times the thickness of the core.
摘要翻译： 具有辐射模耦合特性的光波导光栅作为光学部件具有出色的稳定性和可靠性，其中由于使用掺杂有锗和硼的石英玻璃作为芯，所以抑制带的中心波长具有低的温度依赖性 。 可以通过在光波导中形成辐射模耦合光波导光栅而不增加光栅长度来减小抑制带宽，其中芯的平均相对折射率差大于光通信波导的平均相对折射率差。 可以通过减少与耦合到包层模式的芯的传播模式再次耦合到palnar光波导光栅中的芯的情况的发生的情况下，可以增加抑制，其通过沿着光的传播方向周期性地改变波导结构而形成 光波导具有通过使包层的厚度至少为芯的厚度的十三倍而具有比围绕芯的芯的折射率低的折射率的包层。
-
公开(公告)号：US08548013B2
公开(公告)日：2013-10-01
申请号：US12496200
申请日：2009-07-01
IPC分类号： H01S3/30
CPC分类号： H01S3/2333 , H01S3/0064 , H01S3/06758 , H01S3/2375 , H01S3/302
摘要： This fiber laser is provided with: a signal light source that outputs a signal light; a rare earth-doped fiber that amplifies and outputs the signal light from the signal light source; a Raman amplifying fiber that is routed as a portion of an optical transmission path in order to output the output light from the rare earth-doped fiber to an outside thereof; and a wavelength selecting element that is provided in the optical transmission path from the Raman amplifying fiber to the signal light source and does not allow transmission of a Stokes light that is generated in the Raman amplifying fiber.
摘要翻译： 该光纤激光器具有：输出信号光的信号光源; 稀土掺杂光纤，其放大并输出来自信号光源的信号光; 拉曼放大光纤，其被路由为光传输路径的一部分，以便将来自稀土掺杂光纤的输出光输出到其外部; 以及波长选择元件，其设置在从拉曼放大光纤到信号光源的光传输路径中，并且不允许透射在拉曼放大光纤中产生的斯托克斯光。
-
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
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。
-
6.发明申请MULTI-CORE FIBER FOR OPTICAL PUMPING DEVICE AND MANUFACTURING METHOD THEREOF, OPTICAL PUMPING DEVICE, FIBER LASER AND FIBER AMPLIFIER 有权用于光泵装置的多芯光纤及其制造方法，光泵装置，光纤激光器和光纤放大器公开(公告)号：US20100118897A1
公开(公告)日：2010-05-13
申请号：US12597677
申请日：2008-04-24
申请人： Shoji Tanigawa , Michihiro Nakai
发明人： Shoji Tanigawa , Michihiro Nakai
CPC分类号： G02B6/02042 , G02B6/04 , G02B6/2835 , H01S3/06708 , H01S3/094003
摘要： A multi-core fiber for an optical pumping device is provided. The multi-core fiber includes a plurality of optical fibers that are inserted into holes of an alignment member. The optical fibers and the alignment member are integrated by heating. The alignment member includes a material that has a lower softening temperature than a softening temperature of the optical fibers.
摘要翻译： 提供了一种用于光泵装置的多芯光纤。 多芯光纤包括插入到对准部件的孔中的多根光纤。 通过加热将光纤和对准部件集成。 对准构件包括具有比光纤的软化温度低的软化温度的材料。
-
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
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。
-
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。
-
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
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。
-
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
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。
-
-
-
-
-
-
-
-
-
搜索结果
30 条记录 (耗时 0.027 秒)
