公开(公告)号：US07796670B1

公开(公告)日：2010-09-14

申请号：US08938700

申请日：1997-09-26

申请人： Shuichi Fujikawa ,  Tetsuo Kojima

发明人： Shuichi Fujikawa ,  Tetsuo Kojima

IPC分类号： H01S3/09 ,  H01S3/091

CPC分类号： H01S3/0941 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/042 ,  H01S3/0602 ,  H01S3/061 ,  H01S3/08072 ,  H01S3/094057 ,  H01S3/094084 ,  H01S3/2308

摘要： A diode laser pumped solid-state laser amplifier capable of homogenizing the distribution of heat dissipation levels on a section of a solid-state laser rod and not causing a bifocal phenomenon, and a diode laser pumped solid-state laser using the diode laser pumped solid-state laser amplifier. A diode laser pumped solid-state laser amplifier includes a solid-state laser rod having an optical axis along which a laser beam propagates and includes an active medium therein and a plurality of pumping sources having optical axes that run on a plane orthogonal to the axial core of the solid-state laser rod and are separated by a given distance from the axial core of the solid-state laser rod. When pumping light rays are projected on a plane orthogonal to the axial core of the solid-state laser rod, the plurality of pumping sources are located at equiangular intervals with respect to the axial core of the solid-state laser rod.

摘要翻译： 一种二极管激光泵浦固态激光放大器，其能够使固态激光棒的一部分上的散热水平分布均匀化并且不引起双焦现象，并且使用二极管激光泵浦固体的二极管激光泵浦固态激光器 状态激光放大器。 二极管激光泵浦固体激光放大器包括固态激光棒，其具有光轴，激光束沿着该光轴传播并且包括其中的有源介质，以及多个泵浦源，其具有在与轴向正交的平面上延伸的光轴 并且与固态激光棒的轴芯分开给定的距离。 当泵浦光线投射在与固态激光棒的轴向芯正交的平面上时，多个泵浦源相对于固态激光棒的轴向芯等角间隔设置。

公开(公告)号：US06393034B1

公开(公告)日：2002-05-21

申请号：US09477706

申请日：2000-01-05

申请人： Susumu Konno ,  Shuichi Fujikawa ,  Tetsuo Kojima

发明人： Susumu Konno ,  Shuichi Fujikawa ,  Tetsuo Kojima

IPC分类号： H01S311

CPC分类号： H01S3/109 ,  H01S3/08 ,  H01S3/08059 ,  H01S3/08072 ,  H01S3/0815 ,  H01S3/11

摘要： An intracavity wavelength conversion laser apparatus has a stable resonator in which a solid-state laser active medium, a resonator Q-value modulating element, and a wavelength conversion crystal, a nonlinear element, are arranged along a laser optical axis for generating a Q pulse wavelength conversion laser beam. A mirror constituting the stable resonator, which is positioned close to the wavelength conversion crystal, is a convex mirror, whereby the Q pulse wavelength conversion laser beam has a short pulse width. The laser apparatus is easily operated with high efficiency and has a small size. The Q pulse wavelength conversion laser beam is generated with excellent reproducibility and stability, and the wavelength conversion crystal is less susceptible to optical damage.

摘要翻译： 腔内波长转换激光装置具有稳定的谐振器，其中固体激光器活性介质，谐振器Q值调制元件和波长转换晶体，非线性元件沿激光光轴布置以产生Q脉冲 波长转换激光束。 构成靠近波长转换晶体的稳定谐振器的反射镜是凸面镜，由此Q脉冲波长转换激光束具有短的脉冲宽度。 激光装置容易操作，效率高，体积小。 产生Q脉冲波长转换激光束具有优异的再现性和稳定性，并且波长转换晶体不易受光损伤。

公开(公告)号：US07280577B2

公开(公告)日：2007-10-09

申请号：US10475918

申请日：2002-04-24

申请人： Susumu Konno ,  Tetsuo Kojima ,  Shuichi Fujikawa

发明人： Susumu Konno ,  Tetsuo Kojima ,  Shuichi Fujikawa

IPC分类号： H01S3/14

CPC分类号： H01S3/2316 ,  H01S3/08072 ,  H01S3/0941 ,  H01S3/10007 ,  H01S3/1022

摘要： Laser equipment in which pumping every dependence of output beam diameter and beam wavefront curvature is reduced. The total pumping energy of at least one of laser active media disposed beyond terminal laser beam waists, among beam waists, is approximately one-half of the total pumping energy of laser active media disposed between two adjacent beam waists.

摘要翻译： 激光设备中的每个输出光束直径和光束波前曲率的依赖性都被减少。 在束腰之间设置的超过终端激光束腰部的激光活性介质中的至少一个的总泵浦能量约为设置在两个相邻束腰之间的激光活性介质的总泵浦能量的一半。

公开(公告)号：US07142354B2

公开(公告)日：2006-11-28

申请号：US10511170

申请日：2001-12-12

申请人： Tetsuo Kojima ,  Susumu Konno ,  Shuichi Fujikawa ,  Koji Yasui ,  Takatomo Sasaki ,  Yusuke Mori ,  Masashi Yoshimura

发明人： Tetsuo Kojima ,  Susumu Konno ,  Shuichi Fujikawa ,  Koji Yasui ,  Takatomo Sasaki ,  Yusuke Mori ,  Masashi Yoshimura

IPC分类号： G02F1/35 ,  H01S3/108

CPC分类号： G02F1/3501 ,  G02F2001/3505

摘要： In a wavelength converting method, an ambient that is in contact with a surface of a non-linear optical crystal from which wavelength-converted light is outputted is a gas that is lower in content of nitrogen than air. A wavelength converting device includes a device for controlling the ambient in contact with a surface of the non-linear optical crystal from which the wavelength-converted light is outputted so the ambient is lower in nitrogen than air. A laser machining device includes the wavelength converting device.

摘要翻译： 在波长转换方法中，与输出波长转换光的非线性光学晶体的表面接触的环境是氮含量低于空气的气体。 波长转换装置包括用于控制与非线性光学晶体的表面接触的环境的装置，从该波长转换光输出波长转换的光，使得氮气中的环境比空气低。 激光加工装置包括波长转换装置。

公开(公告)号：US5883737A

公开(公告)日：1999-03-16

申请号：US823582

申请日：1997-03-25

申请人： Shuichi Fujikawa ,  Tetsuo Kojima

发明人： Shuichi Fujikawa ,  Tetsuo Kojima

IPC分类号： H01S3/0933 ,  H01S3/0941 ,  H01S5/40 ,  H01S3/00 ,  H01S3/093

CPC分类号： H01S3/0941 ,  H01S3/025 ,  H01S3/0407 ,  H01S3/061 ,  H01S3/094057 ,  H01S3/09408

摘要： A diode laser excitation sold-state laser amplifier capable of withstanding a mechanical disturbance, is easily fabricated and adjusted, can stably generate a high-efficiency high-quality laser beam and easily realize a large output. A diode laser excitation solid-state laser using this amplifier, including: a solid-state laser rod extending along the optical axis of a laser beam and including an active medium therein; two side plates for supporting both ends of the solid-state laser rod respectively; a flow tube provided to enclose the solid-state laser rod and containing a cooling medium; a plurality of excitation modules each having a flat substrate, with a hole formed at the center thereof through which the solid-state laser rod is passed, and at least one excitation light source, for providing excitation light from the lateral of the solid-state laser rod; and connecting and fixing means and for connecting a plurality of the excitation modules to each other and fixing them to the side plates.

摘要翻译： 能够承受机械扰动的二极管激光激光售卖激光放大器易于制造和调整，可以稳定地产生高效率的高品质激光束，并且容易实现大的输出。 一种使用该放大器的二极管激光激光固态激光器，包括：固体激光棒，其沿着激光束的光轴延伸并且包括其中的活性介质; 两个侧板分别用于支撑固态激光棒的两端; 设置为包围固态激光棒并容纳冷却介质的流管; 多个激励模块，每个激励模块均具有平坦的基板，在其中心处形成有固体激光棒通过的孔，以及至少一个激发光源，用于从固态的侧面提供激发光 激光棒; 以及连接和固定装置，用于将多个激励模块彼此连接并将它们固定在侧板上。

公开(公告)号：US20050225837A1

公开(公告)日：2005-10-13

申请号：US10511170

申请日：2001-12-12

申请人： Tetsuo Kojima ,  Susumu Konno ,  Shuichi Fujikawa ,  Koji Yasui ,  Takatomo Sasaki ,  Yusuke Mori ,  Masashi Yoshimura

发明人： Tetsuo Kojima ,  Susumu Konno ,  Shuichi Fujikawa ,  Koji Yasui ,  Takatomo Sasaki ,  Yusuke Mori ,  Masashi Yoshimura

IPC分类号： G02F1/35 ,  G02F2/02

CPC分类号： G02F1/3501 ,  G02F2001/3505

摘要： In a wavelength converting method, an ambient that is in contact with a surface of a non-linear optical crystal from which wavelength-converted light is outputted is a gas that is lower in content of nitrogen than air. A wavelength converting device includes a device for controlling the ambient in contact with a surface of the non-linear optical crystal from which the wavelength-converted light is outputted so the ambient is lower in nitrogen than air. A laser machining device includes the wavelength converting device.

摘要翻译： 在波长转换方法中，与输出波长转换光的非线性光学晶体的表面接触的环境是氮含量低于空气的气体。 波长转换装置包括用于控制与非线性光学晶体的表面接触的环境的装置，从该波长转换光输出波长转换的光，使得氮气中的环境比空气低。 激光加工装置包括波长转换装置。

公开(公告)号：US20090141746A1

公开(公告)日：2009-06-04

申请号：US11916114

申请日：2006-05-19

申请人： Shuichi Fujikawa ,  Junji Kano ,  Kazuki Kuba

发明人： Shuichi Fujikawa ,  Junji Kano ,  Kazuki Kuba

IPC分类号： H01S3/11 ,  H01S3/00 ,  H01S3/10

CPC分类号： H01S3/025 ,  H01S3/005 ,  H01S3/0092 ,  H01S3/027 ,  H01S3/07 ,  H01S3/0941 ,  H01S3/117

摘要： In a solid-state laser device, a single outer casing (1) having an approximately sealed structure is included; a single or a plurality of inner casings (2) are provided inside the outer casing (1); in some or all of the inner casings (2), an air cleaning unit (4) is included in which the air within the outer casing (1) is made clean and supplied into the inner casings (2); inside the outer casing (1), there disposed are a laser light-source (5, 6, 7) having a solid-state laser medium (501) and a light resonator, and an optical system (10, 11, 901) that transmits or interrupts a laser beam (8) emitted from the laser light-source; in addition, the laser light-source (5, 6, 7) and the optical system (10, 11, 901) or part of them are contained inside the inner casings (2); thus, in a simple, compact and inexpensive configuration, it is possible to prevent degradation of optical components and dew condensation thereon, and to stably supply a laser beam.

摘要翻译： 在固体激光装置中，包括具有近似密封结构的单个外壳（1） 在外壳（1）的内部设有单个或多个内壳（2）。 在一些或全部内壳体（2）中，包括空气净化单元（4），其中外壳（1）内的空气被清洁并供应到内壳体（2）中; 在外壳（1）的内部，设置有具有固态激光介质（501）和光谐振器的激光光源（5,6,7）和光学系统（10,11,101），其中 传输或中断从激光光源发射的激光束（8）; 另外，激光光源（5,6,7）和光学系统（10,11，901）或其一部分被包含在内壳体（2）内; 因此，在简单，紧凑且廉价的结构中，可以防止光学部件的劣化和结露，并稳定地供给激光束。

公开(公告)号：US20080225922A1

公开(公告)日：2008-09-18

申请号：US10590191

申请日：2005-09-14

申请人： Shuichi Fujikawa ,  Takafumi Kawai ,  Junji Kano

发明人： Shuichi Fujikawa ,  Takafumi Kawai ,  Junji Kano

IPC分类号： H01S3/06

CPC分类号： H01S3/08 ,  G02B6/4206 ,  H01S3/005 ,  H01S3/061 ,  H01S3/07 ,  H01S3/0805 ,  H01S3/08072 ,  H01S3/2316

摘要： In a symmetrically stable optical resonator, a first reference plane is set at an arbitrary position between the end face (102), opposing a partial reflector (2), and the neutral point (101) of a rod type solid state laser medium (1), and an aperture (5) having a diameter substantially equal to that of the rod type solid state laser medium (1) is arranged at a position optically symmetric to the reference plane with the partial reflector (2) as a neutral point using a relay lens (6) and a coupling lens (7) arranged between the aperture (5) and an optical fiber (8), the first reference plane is transfer-relayed onto the incident end face of the optical fiber (8), and the aperture (5) is transferred onto the coupling lens (7) through the relay lens (6). Even when the focal length of thermal lens of the rod type solid state laser medium (1) or pointing of laser light is varied, beam transmission is performed by an optical fiber excellent in stability and reliability and condensation of laser light exiting the optical fiber is sustained constantly.

摘要翻译： 在对称稳定的光学谐振器中，将第一参考平面设置在与部分反射镜（2）相对的端面（102）与棒状固态激光介质（1）的中性点（101）之间的任意位置 ），并且具有与棒状固体激光介质（1）的直径基本相等的直径的孔（5）被布置在与参考平面光学对称的位置处，部分反射器（2）为中性点，使用 中继透镜（6）和布置在孔（5）和光纤（8）之间的耦合透镜（7），第一参考平面被传送到光纤（8）的入射端面上，并且 孔（5）通过中继透镜（6）被转印到耦合透镜（7）上。 即使棒状固体激光介质（1）的热透镜的焦距或者激光的指示变化，也可以通过光稳定性和可靠性优异的光纤进行光束透射，而离开光纤的激光的冷凝是 持续不断。

公开(公告)号：US08885684B2

公开(公告)日：2014-11-11

申请号：US14123903

申请日：2011-06-20

申请人： Yoichi Tanino ,  Junichi Nishimae ,  Tatsuya Yamamoto ,  Shuichi Fujikawa

发明人： Yoichi Tanino ,  Junichi Nishimae ,  Tatsuya Yamamoto ,  Shuichi Fujikawa

IPC分类号： H01S3/22 ,  H01S3/041 ,  H01S3/036 ,  H01S3/03 ,  H01S3/223 ,  H01S3/0971 ,  H01S3/07 ,  H01S3/081

CPC分类号： H01S3/041 ,  H01S3/03 ,  H01S3/036 ,  H01S3/076 ,  H01S3/081 ,  H01S3/0816 ,  H01S3/0971 ,  H01S3/2232

摘要： A CO2 gas laser device according to the present invention amplifies CO2 laser light that oscillates repeatedly in short pulses having a pulse width of 100 ns or less, and cools a CO2 laser gas which is excited by continuous discharge by circulating the CO2 laser gas by means of forced convection. Therein, an angle θ defined by the optical axis of the amplified CO2 laser beam and the flow direction of the CO2 laser gas caused by the forced convection is determined by both a discharge cross sectional area and a discharge length of a volume in which the CO2 laser gas is excited by discharge, whereby increasing the gain of pulsed laser to achieve pulsed laser light having an extremely high average output power.

摘要翻译： 根据本发明的二氧化碳气体激光装置放大以脉冲宽度为100ns以下的短脉冲重复振荡的CO 2激光，并通过循环CO 2激光气体的方式冷却通过连续放电而激发的CO 2激光气体 的强制对流。 其中，角度和角度; 由放大的CO 2激光束的光轴限定，并且由强制对流引起的CO 2激光气体的流动方向由放电截面积和其中激发CO 2激光气体的体积的放电长度 从而增加脉冲激光器的增益以实现具有极高平均输出功率的脉冲激光。

公开(公告)号：US08873599B2

公开(公告)日：2014-10-28

申请号：US13824432

申请日：2011-08-26

申请人： Tatsuya Yamamoto ,  Naoki Miyamoto ,  Junichi Nishimae ,  Shuichi Fujikawa

发明人： Tatsuya Yamamoto ,  Naoki Miyamoto ,  Junichi Nishimae ,  Shuichi Fujikawa

IPC分类号： H01S3/22 ,  H01S3/036 ,  H01S3/038 ,  H01S3/223

CPC分类号： H01S3/038 ,  H01S3/036 ,  H01S3/2232 ,  H01S2301/203

摘要： A tri-axially orthogonal gas laser device in which an optical axis of an optical resonator, a direction in which a laser gas is supplied into the optical resonator, and a direction of discharge for exciting the laser gas are mutually orthogonal to one another, the device including: an exciting unit including a blower supplying the laser gas in −X direction to the optical axis of the optical resonator, and a discharge electrode pair which is shifted on a gas upstream side with respect to the optical axis; and an exciting unit including a blower for supplying the laser gas in +X direction to the optical axis of the optical resonator, and a discharge electrode pair which is shifted on a gas upstream side with respect to the optical axis

摘要翻译： 将光谐振器的光轴，向光谐振器供给激光气体的方向以及使激光气体激发的方向相互正交的三轴正交气体激光装置相互正交， 该装置包括：激励单元，其包括向所述光学谐振器的光轴向-X方向供给激光气体的鼓风机;以及在相对于所述光轴的气体上游侧移动的放电电极对; 以及激励单元，其包括用于将激光气体沿+ X方向供给到光谐振器的光轴的鼓风机，以及在相对于光轴的气体上游侧移动的放电电极对