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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。
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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。
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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
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。
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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。
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公开(公告)号：US20130057949A1
公开(公告)日：2013-03-07
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： H01S5/04
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。
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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。
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公开(公告)号：US08331408B2
公开(公告)日：2012-12-11
申请号：US13345133
申请日：2012-01-06
申请人： Yasuhiro Oba , Michihiro Nakai
发明人： Yasuhiro Oba , Michihiro Nakai
CPC分类号： H01S3/06754 , H01S3/0078 , H01S3/0092 , H01S3/10092 , H01S3/1022 , H01S3/302
摘要： The invention relates to a fiber laser device 100. In the preliminary pumping state, the laser light is not output from the seed laser light source 10, the pumping light is output from the pumping light source 10, and the pumping light has such an intensity that the wavelength of the laser light emitted and output from the amplification optical fiber 30 is not converted by the wavelength converter 71. In the output state, the laser light is output from the seed laser light source 10, the pumping light is output from the pumping light source 20, and the laser light and the pumping light have such intensities that the wavelength of the laser light amplified and output by the amplification optical fiber 30 is converted by the wavelength converter 71.
摘要翻译： 本发明涉及一种光纤激光装置100.在初步泵送状态下，激光不从种子激光光源10输出，泵浦光从泵浦光源10输出，泵浦光具有这样的强度 从放大光纤30发射和输出的激光的波长不被波长转换器71转换。在输出状态下，激光从种子激光光源10输出，泵浦光从 泵浦光源20，激光和泵浦光具有由放大光纤30放大和输出的激光的波长由波长转换器71转换的强度。
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公开(公告)号：US20090274175A1
公开(公告)日：2009-11-05
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。
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公开(公告)号：US20070280597A1
公开(公告)日：2007-12-06
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。
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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。
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