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公开(公告)号：US5506858A
公开(公告)日：1996-04-09
申请号：US121347
申请日：1993-09-15
申请人： Yushi Takenaka , Masaki Kuzumoto , Kenji Yoshizawa , Takashi Yamamoto , Masato Matsubara , Junichi Nishimae , Koji Yasui , Akihiro Otani
发明人： Yushi Takenaka , Masaki Kuzumoto , Kenji Yoshizawa , Takashi Yamamoto , Masato Matsubara , Junichi Nishimae , Koji Yasui , Akihiro Otani
IPC分类号： B23K26/06 , H01S3/036 , H01S3/06 , H01S3/07 , H01S3/08 , H01S3/0975 , H01S3/098 , H01S3/13 , H01S3/23 , H01S3/139
CPC分类号： B23K26/0608 , B23K26/06 , B23K26/064 , B23K26/0643 , B23K26/0648 , B23K26/0665 , B23K26/123 , H01S3/08059 , H01S3/036 , H01S3/076 , H01S3/08068 , H01S3/0975 , H01S3/2366
摘要： A laser system wherein, in order that a high-output and high-quality single mode of a cross sectional area larger than the beam diameter determined by the construction of a resonator can be obtained stably, although this has heretofore been impossible, there is used a coupling mirror provided with a partial reflection film and an antireflecting film, a laser beam mode is selected using the partial reflection film, a phase difference between laser beam portions caused by a difference in construction between the partial reflection film and the antireflecting film is compensated using a phase difference compensating apparatus, and there is formed an aperture whose diameter is set to a value of not larger than four times the diameter of the partial reflection film.
摘要翻译： 一种激光系统，其中为了稳定地获得横截面积大于通过谐振器结构确定的光束直径的高输出和高质量的单一模式，尽管迄今为止已经不可能使用 设置有部分反射膜和抗反射膜的耦合镜，使用部分反射膜选择激光束模式，补偿由部分反射膜和抗反射膜之间的结构差引起的激光束部分之间的相位差 使用相位差补偿装置，形成直径设定为不大于部分反射膜直径的4倍的孔径。
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公开(公告)号：US5586139A
公开(公告)日：1996-12-17
申请号：US525198
申请日：1995-09-08
申请人： Yushi Takenaka , Masaki Kuzumoto , Kenji Yoshizawa , Takashi Yamamoto , Masato Matsubara , Junichi Nishimae , Koji Yasui , Akihiro Otani
发明人： Yushi Takenaka , Masaki Kuzumoto , Kenji Yoshizawa , Takashi Yamamoto , Masato Matsubara , Junichi Nishimae , Koji Yasui , Akihiro Otani
IPC分类号： B23K26/06 , H01S3/036 , H01S3/06 , H01S3/07 , H01S3/08 , H01S3/0975 , H01S3/098 , H01S3/13 , H01S3/23 , H01S3/139
CPC分类号： B23K26/0608 , B23K26/06 , B23K26/064 , B23K26/0643 , B23K26/0648 , B23K26/0665 , B23K26/123 , H01S3/08059 , H01S3/036 , H01S3/076 , H01S3/08068 , H01S3/0975 , H01S3/2366
摘要： A laser system wherein, in order that a high-output and high-quality single mode of a cross sectional area larger than the beam diameter determined by the construction of a resonator can be obtained stably, although this has heretofore been impossible, there is used a coupling mirror provided with a partial reflection film and an antireflecting film, a laser beam mode is selected using the partial reflection film, a phase difference between laser beam portions caused by a difference in construction between the partial reflection film and the antireflecting film is compensated using a phase difference compensating means, and there is formed an aperture whose diameter is set to a value of not larger than four times the diameter of the partial reflection film.
摘要翻译： 一种激光系统，其中为了稳定地获得横截面积大于通过谐振器结构确定的光束直径的高输出和高质量的单一模式，尽管迄今为止已经不可能使用 设置有部分反射膜和抗反射膜的耦合镜，使用部分反射膜选择激光束模式，补偿由部分反射膜和抗反射膜之间的结构差引起的激光束部分之间的相位差 使用相位差补偿装置，并且形成直径设定为不大于部分反射膜的直径的四倍的孔径。
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公开(公告)号：US5373528A
公开(公告)日：1994-12-13
申请号：US7231
申请日：1993-01-21
CPC分类号： H01S3/0975 , H01S3/0315 , H01S3/041 , H01S3/0602 , H01S3/07 , H01S3/076
摘要： According to the present invention there is provided a laser apparatus capable of efficient oscillation with an excitation power source with comparatively low frequency, wherein discharge is obliquely generated within the rectangular section of a discharge space. There is also provided a laser apparatus with a pair of preliminary discharge excitation electrodes which can readily initiate discharge. There is further provided a laser apparatus capable of efficient oscillation with an excitation power source with comparatively low frequency, wherein provided is a pair of discharge excitation electrodes located in the major side direction of discharge space whose length is more than three times as long as that of minor side direction thereof. There is further provided a laser apparatus with a pair of discharge excitation electrodes whose dimension is smaller than that of a pair of dielectric plates, which apparatus can prevent undesirable discharge. There is also provided a laser apparatus with more than three discharge spaces at least one of which is given a lower electric field having the apparatus oscillate efficiently. There is further provided a laser apparatus with an improved oscillation efficiency wherein furnished are dielectric double pipes creating a substantially large discharge space.
摘要翻译： 根据本发明，提供一种能够以较低频率的激励电源进行有效振荡的激光装置，其特征在于，在放电空间的矩形截面内倾斜地产生放电。 还提供了具有一对可以容易地启动放电的初步放电激励电极的激光装置。 另外，还提供一种能够以较低频率的激励电源进行有效振荡的激光装置，其特征在于，设置有放电空间的长边方向的长度大于所述放电空间长度的三倍以上的一对放电激励电极 的小方向。 还提供一种具有一对放电激励电极的激光装置，其尺寸小于一对电介质板的尺寸，该装置可以防止不期望的放电。 还提供了具有三个以上放电空间的激光装置，其中至少一个放电空间被给予具有该装置有效振荡的较低电场。 还提供了具有改善的振荡效率的激光装置，其中所述的激光装置被设置为产生基本上大的放电空间的电介质双管。
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公开(公告)号：US5479428A
公开(公告)日：1995-12-26
申请号：US339234
申请日：1994-11-10
CPC分类号： H01S3/0975 , H01S3/0315 , H01S3/041 , H01S3/0602 , H01S3/07 , H01S3/076
摘要： According to the present invention there is provided a laser apparatus capable of efficient oscillation with an excitation power source with comparatively low frequency, wherein discharge is obliquely generated within the rectangular section of a discharge space. There is also provided a laser apparatus with a pair of preliminary discharge excitation electrodes which can readily initiate discharge. There is further provided a laser apparatus capable of efficient oscillation with an excitation power source with comparatively low frequency, wherein provided is a pair of discharge excitation electrodes located in the major side direction of discharge space whose length is more than three times as long as that of minor side direction thereof. There is further provided a laser apparatus with a pair of discharge excitation electrodes whose dimension is smaller than that of a pair of dielectric plates, which apparatus can prevent undesirable discharge. There is also provided a laser apparatus with more than three discharge spaces at least one of which is given a lower electric field having the apparatus oscillate efficiently. There is further provided a laser apparatus with an improved oscillation efficiency wherein furnished are dielectric double pipes creating a substantially large discharge space.
摘要翻译： 根据本发明，提供一种能够以较低频率的激励电源进行有效振荡的激光装置，其特征在于，在放电空间的矩形截面内倾斜地产生放电。 还提供了具有一对可以容易地启动放电的初步放电激励电极的激光装置。 另外，还提供一种能够以较低频率的激励电源进行有效振荡的激光装置，其特征在于，设置有放电空间的长边方向的长度大于所述放电空间长度的三倍以上的一对放电激励电极 的小方向。 还提供一种具有一对放电激励电极的激光装置，其尺寸小于一对电介质板的尺寸，该装置可以防止不期望的放电。 还提供了具有三个以上放电空间的激光装置，其中至少一个放电空间被给予具有该装置有效振荡的较低电场。 还提供了具有改善的振荡效率的激光装置，其中所述的激光装置被设置为产生基本上大的放电空间的电介质双管。
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公开(公告)号：US20120031883A1
公开(公告)日：2012-02-09
申请号：US13264640
申请日：2010-05-14
申请人： Kenji Kumamoto , Yushi Takenaka , Kazuki Kuba , Toru Murai , Taira Ogita , Junichi Nishimae , Keisuke Furuta
发明人： Kenji Kumamoto , Yushi Takenaka , Kazuki Kuba , Toru Murai , Taira Ogita , Junichi Nishimae , Keisuke Furuta
CPC分类号： B23K26/38 , B23K26/0648 , B23K26/0665 , B23K26/073 , B23K2101/18 , B23K2103/04 , H01S2301/206
摘要： The machining device is equipped with a fiber laser oscillator for oscillating laser light of a top hat shape, and a light collecting lens and a machining head for collecting the laser light of the top hat shape and emitting the laser light onto a machining target such that the beam diameter of the laser light of the top hat shape at a position where light intensity becomes the one corresponding to a machining threshold of the machining target is about three times the size of the beam diameter of laser light in a Gaussian mode at the same position, when the laser light in the Gaussian mode has a beam quality substantially the same as that of the laser light of the top hat shape.
摘要翻译： 该加工装置配备有用于振荡顶帽形状的激光的光纤激光振荡器，以及聚光透镜和用于收集顶帽形状的激光并将激光发射到加工对象上的加工头，使得 在光强度成为与加工对象的加工阈值相对应的位置的顶帽形状的激光的光束直径为相同高斯模式的激光的光束直径的大小的三倍 当高斯模式的激光具有与顶帽形状的激光基本相同的光束质量时，
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公开(公告)号：US06292505B1
公开(公告)日：2001-09-18
申请号：US09285721
申请日：1999-04-05
申请人： Yushi Takenaka , Jun-ichi Nishimae , Yukio Satoh
发明人： Yushi Takenaka , Jun-ichi Nishimae , Yukio Satoh
IPC分类号： H01S3082
CPC分类号： H01S3/082 , H01S3/08054 , H01S3/0813 , H01S3/107 , H01S3/115
摘要： In a laser apparatus, when no voltage is applied to optical modulator, a first linearly polarized component of a laser beam which passes through a polarization control mirror causes a laser oscillation in a first laser resonator and a laser beam is output from a second reflecting mirror. When a pulsed voltage is applied to the optical modulator, a second linearly polarized component of the laser beam reflected by the polarization control mirror passes through the optical modulation means and causes a Q-switched laser oscillation in a second laser resonator. In this case, the first linearly polarized component passes through the polarization control mirror and is output from the second reflecting mirror. This technique makes it possible to combine a Q-switched laser apparatus with a non-Q-switched laser apparatus without causing the power of the laser beam to exceed a maximum allowable limit that an electrooptical modulator can handle.
摘要翻译： 在激光装置中，当没有电压施加到光调制器时，通过偏振控制反射镜的激光束的第一直线偏振分量在第一激光谐振器中引起激光振荡，并且激光束从第二反射镜 。 当向光调制器施加脉冲电压时，由偏振控制反射镜反射的激光束的第二直线偏振分量通过光调制装置，并在第二激光谐振器中引起Q开关激光振荡。 在这种情况下，第一线偏振分量通过偏振控制反射镜并从第二反射镜输出。 该技术使得可以将Q开关激光装置与非Q开关激光装置组合，而不会使激光束的功率超过电光调制器可以处理的最大允许极限。
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