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公开(公告)号：US20060233212A1
公开(公告)日：2006-10-19
申请号：US11402795
申请日：2006-04-13
申请人： Kazuya Ohta , Michinori Maeda , Akira Egawa
发明人： Kazuya Ohta , Michinori Maeda , Akira Egawa
IPC分类号： H01S3/22
CPC分类号： H01S3/036 , F04D29/162 , H01S3/073
摘要： In an laser oscillator (100), a blower (10, 20, 120) for circulating a laser medium between an electric discharge tube (102) and a circulating passage (104) includes: a casing (12) having a suction port (12a) and an exhaust port (12b); and a blade (18) pivotally supported in the casing (12) so that the blade (18) can face the suction port (12a) and the exhaust port (12b). The blade (18) is formed into a shape in which a diameter of the blade (18) is different at a position on a cross section perpendicular to a rotary central line (O), and a gap (Go) between a portion, in which a diameter of the blade (18) is relatively large, and the casing is larger than a gap (Gi) between a portion, in which a diameter of the blade (18) is relatively small, and the casing. Due to the foregoing, a highly reliable blower used for a laser oscillator, the reduction of the blower efficiency of which is suppressed to be as small as possible, can be provided.
摘要翻译： 在激光振荡器（100）中，用于在放电管（102）和循环通道（104）之间循环激光介质的鼓风机（10,20,120）包括：具有吸入口（12）的壳体 a）和排气口（12b）; 以及枢转地支撑在壳体（12）中的叶片（18），使得叶片（18）能够面向吸入口（12a）和排气口（12b）。 叶片（18）形成为在垂直于旋转中心线（O）的横截面上的位置处叶片（18）的直径不同的形状，并且间隙（G < 其中叶片（18）的直径相对较大的部分与壳体之间的距离大于间隙（G SUB） 刀片（18）相对较小，并且套管。 由于上述原因，可以提供用于激光振荡器的高度可靠的鼓风机，其鼓风机效率的降低被抑制到尽可能小。
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公开(公告)号：US07342948B2
公开(公告)日：2008-03-11
申请号：US11402795
申请日：2006-04-13
申请人： Kazuya Ohta , Michinori Maeda , Akira Egawa
发明人： Kazuya Ohta , Michinori Maeda , Akira Egawa
IPC分类号： H01S3/04
CPC分类号： H01S3/036 , F04D29/162 , H01S3/073
摘要： In an laser oscillator (100), a blower (10, 20, 120) for circulating a laser medium between an electric discharge tube (102) and a circulating passage (104) includes: a casing (12) having a suction port (12a) and an exhaust port (12b); and a blade (18) pivotally supported in the casing (12) so that the blade (18) can face the suction port (12a) and the exhaust port (12b). The blade (18) is formed into a shape in which a diameter of the blade (18) is different at a position on a cross section perpendicular to a rotary central line (O), and a gap (Go) between a portion, in which a diameter of the blade (18) is relatively large, and the casing is larger than a gap (Gi) between a portion, in which a diameter of the blade (18) is relatively small, and the casing. Due to the foregoing, a highly reliable blower used for a laser oscillator, the reduction of the blower efficiency of which is suppressed to be as small as possible, can be provided.
摘要翻译： 在激光振荡器（100）中，用于在放电管（102）和循环通道（104）之间循环激光介质的鼓风机（10,20,120）包括：具有吸入口（12）的壳体 a）和排气口（12b）; 以及枢转地支撑在壳体（12）中的叶片（18），使得叶片（18）能够面向吸入口（12a）和排气口（12b）。 叶片（18）形成为在垂直于旋转中心线（O）的横截面上的位置上叶片（18）的直径不同的形状，并且间隙（G < 其中叶片（18）的直径相对较大的部分与壳体之间的距离大于间隙（G SUB） 刀片（18）相对较小，并且套管。 由于上述原因，可以提供用于激光振荡器的高度可靠的鼓风机，其鼓风机效率的降低被抑制到尽可能小。
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公开(公告)号：US06826221B2
公开(公告)日：2004-11-30
申请号：US10385529
申请日：2003-03-12
申请人： Akira Egawa , Michinori Maeda , Kazuya Ohta , Akira Miyake
发明人： Akira Egawa , Michinori Maeda , Kazuya Ohta , Akira Miyake
IPC分类号： H01S322
摘要： A laser oscillator capable of effectively collecting and removing particulate foreign matter contained in gas laser medium flowing in a circulating path. An electric discharge section arranged in an optical resonator is incorporated into a circulating path of the gas medium including a heat exchanger and a blower. The gas laser medium flows at a high speed in the circulating path. At least one spiral-flow dust collecting mechanism is provided in the circular path downstream of the heat exchanger, and the gas laser medium discharged from the blower is supplied to the electric discharge section through the spiral-flow dust collecting mechanism. The gas laser medium containing the particulate foreign matter spirally flows around an inner pipe in a cylindrical body of the spiral-flow dust collecting mechanism. While spirally flowing in the cylindrical body, the foreign matter having a relative density larger than that of the gas medium is separated from the gas medium by centrifugal force, to introduced into a dust collecting section through a slit to be deposited. Pressure of the gas laser medium flowing in the circulating path may be adjusted in accordance with diameter and/or mass of the particulate foreign matter to be removed.
摘要翻译： 一种激光振荡器，其能够有效地收集和除去在循环路径中流动的气体激光介质中所含的微粒异物。 布置在光学谐振器中的放电部分结合到包括热交换器和鼓风机的气体介质的循环路径中。 气体激光介质在循环路径中高速流动。 在热交换器下游的圆形路径中设置有至少一个螺旋流集尘机构，从鼓风机排出的气体激光介质通过螺旋流集尘机构供给到放电部。 含有颗粒异物的气体激光介质在螺旋流集尘机构的圆筒体内螺旋地流过内管。 在圆柱体中螺旋状地流动时，通过离心力将相对密度大于气体介质的异物与气体介质分离，通过待沉积的狭缝引入集尘部。 可以根据待除去的颗粒异物的直径和/或质量来调节在循环路径中流动的气体激光介质的压力。
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公开(公告)号：US07173954B2
公开(公告)日：2007-02-06
申请号：US10730264
申请日：2003-12-09
申请人： Akira Egawa , Michinori Maeda
发明人： Akira Egawa , Michinori Maeda
CPC分类号： H01S3/036 , H01S3/0385 , H01S3/073 , H01S3/08086
摘要： A plurality of discharge sections are formed in an optical resonance space and are provided with electrodes that are mutually different in for example shape, size and construction. Laser medium gas flows through a circulatory passage passing through a fan and heat exchangers. Mutually different modes can be obtained when discharge is produced independently in the discharge sections. When discharge is produced in both of the discharge sections, the various intermediate modes can be obtained, in accordance with the distribution of power supplied from power sources for discharge excitation that are independently operated. If the number of discharge sections is three or more, it is possible to control the distribution of the discharge power that is supplied to the discharge sections in regard to at least two discharge sections of these discharge sections, and the shape and dimensions of the discharge sections or shape, dimensions and construction of the electrodes are selected such that “different modes are excited when independently discharged”.
摘要翻译： 多个放电部分形成在光学共振空间中并且设置有例如形状，尺寸和结构相互不同的电极。 激光介质气体流过通过风扇和热交换器的循环通道。 在放电部中独立地进行放电时，可以获得相互不同的模式。 当在两个放电部分中产生放电时，可以根据独立操作的用于放电激励的电源的功率分布获得各种中间模式。 如果排出部分的数量为三个以上，则可以控制对这些排出部的至少两个排出部分供给到排出部的排出力的分布，并且排出部的形状和尺寸 选择电极的部分或形状，尺寸和结构，使得“独立放电时激发不同的模式”。
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公开(公告)号：US5091914A
公开(公告)日：1992-02-25
申请号：US571647
申请日：1990-09-04
申请人： Michinori Maeda , Akira Egawa
发明人： Michinori Maeda , Akira Egawa
CPC分类号： H01S3/134
摘要： A high-frequency discharge pumping laser device is provided in which a high-frequency voltage is applied to a discharge tube to cause laser excitation. Light discharged from the discharge tube is measured by a photodiode to control an output of a laser power supply, to thereby stably control the discharging operation when the laser output is zero. The laser output has a close relationship with the discharging area inside the discharge tube, and therefore, the discharging area in which the discharging operation can be stably maintained with the output of zero is detected, to thereby stably control the discharging operation when the output is zero. Further, the length of the discharging area has an indirect relationship with the ambient temperature of the discharge tube, and the discharging operation effected when the laser output is zero is stably controlled in accordance with the ambient temperature of the discharge tube.
摘要翻译： PCT No.PCT / JP90 / 00054 Sec。 371 1990年9月4日第 102（e）1990年9月4日PCT PCT 1990年1月17日PCT公布。 出版物WO90 / 08415 日期：1990年7月26日。提供了一种高频放电泵浦激光器件，其中高频电压施加到放电管以引起激光激发。 通过光电二极管测量从放电管放电的光，以控制激光电源的输出，从而当激光输出为零时稳定地控制放电操作。 激光输出与放电管内的放电面积密切相关，因此检测出输出为零的放电动作能够稳定地保持的放电区域，从而在输出为0时稳定地控制放电动作 零。 此外，放电区域的长度与放电管的环境温度具有间接关系，并且当激光输出为零时进行的放电操作根据放电管的环境温度被稳定地控制。
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公开(公告)号：US20060159152A1
公开(公告)日：2006-07-20
申请号：US11332229
申请日：2006-01-17
CPC分类号： H01S3/076 , H01S3/0805
摘要： A laser oscillator capable of restraining the generation of a diffracted beam so as to obtain a laser beam with high power and high quality. The laser oscillator has an output mirror, a rear mirror and first and second concave mirrors. These mirrors cooperate together so as to form a laser beam profile. First and second beam waists are formed in the laser beam profile, between the output mirror and the first concave mirror and between the second concave mirror and the rear mirror, respectively. The laser oscillator includes a first aperture positioned generally in the middle of an optical path between the output mirror and the first beam waist and a second aperture positioned generally in the middle of the optical path between the first beam waist and the first concave mirror. The laser oscillator further includes a third aperture positioned generally in the middle of the optical path between the rear mirror and the second beam waist and a fourth aperture positioned generally in the middle of the optical path between the second beam waist and the second concave mirror.
摘要翻译： 一种激光振荡器，其能够抑制衍射光束的产生，以获得具有高功率和高质量的激光束。 激光振荡器具有输出镜，后视镜和第一和第二凹面镜。 这些镜子协同工作，以形成激光束轮廓。 第一和第二光束波束形成在激光束轮廓中，分别在输出镜和第一凹面镜之间以及第二凹面镜和后视镜之间。 所述激光振荡器包括大致位于所述输出反射镜和所述第一光束腰之间的光路中间的第一孔，以及大致位于所述第一光束腰与所述第一凹面镜之间的所述光路中间的第二孔。 激光振荡器还包括通常位于后视镜和第二束腰之间的光路中间的第三孔，以及大致位于第二束腰和第二凹面镜之间的光路中间的第四孔。
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公开(公告)号：US5696787A
公开(公告)日：1997-12-09
申请号：US514156
申请日：1995-08-11
申请人： Akira Egawa , Michinori Maeda , Yoshitaka Kubo
发明人： Akira Egawa , Michinori Maeda , Yoshitaka Kubo
CPC分类号： G02B27/28 , B23K26/06 , B23K26/064 , B23K26/0643 , B23K26/0648 , B23K26/0665
摘要： An external optical system is simplified in construction so that a laser oscillation apparatus is low-priced and compact as a whole. On the side of one end portion (10A) of a return-type resonator (10), a laser beam is reflected by a polarizing mirror (147) to be incident upon a polarizing mirror (146) which is situated diagonally below the mirror (147), and is also reflected by a polarizing mirror (142) to be incident upon a polarizing mirror (141) which is situated diagonally above the mirror (142). Thus, at the one end portion (10A), the polarizing mirror (141) and the like are arranged so that optical axes cross each other. Since the emitted laser beam forms a linear polarized beam inclined at an angle of 45.degree. to a horizontal plane, as indicated by arrow (100), the laser beam can be subjected to circular polarization by using only one 1/4-wavelength mirror. Thus, the construction of the external optical system can be simplified. Since the optical axes cross each other at the return side, moreover, the construction can be made compact as a whole.
摘要翻译： 外部光学系统的结构简化，使得激光振荡装置整体价格低廉且紧凑。 在返回型谐振器（10）的一个端部（10A）的一侧，激光束被偏振镜147反射以入射到偏光镜146上，该偏振镜位于反射镜的下方 147），并且还被偏振镜（142）反射以入射到位于反射镜（142）上方的对角线的偏振镜（141）上。 因此，在一个端部（10A）处，偏振镜（141）等被布置成使得光轴彼此交叉。 由于发射的激光束形成与水平面成45度角倾斜的线性偏振光束，如箭头（100）所示，激光束可以仅使用一个+ E， + EE波长镜。 因此，可以简化外部光学系统的构造。 此外，由于光轴在返回侧彼此交叉，所以整体上可以使结构紧凑。
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公开(公告)号：US5412685A
公开(公告)日：1995-05-02
申请号：US244915
申请日：1994-06-15
申请人： Akira Egawa , Michinori Maeda , Yoshitaka Kubo
发明人： Akira Egawa , Michinori Maeda , Yoshitaka Kubo
摘要： A laser oscillator which is capable of providing a circularly polarized laser beam by an external optical system having a brief configuration. A folding section of a folded-type resonator (10) comprises reflecting mirrors (4a), (4b) and (4c). The reflecting mirror (4a) is inclined at an angle of 45.degree. to an optical axis of an excitation section (3a), and the reflecting mirror (4c) is inclined at an angle of 45.degree. to an optical axis of an excitation section (3b). The reflecting mirror (4b) is horizontally arranged so that the center of the mirror is positioned at the vertex of an isosceles right triangle with respect to the reflecting mirrors (4a) and (4c). Thus, an S polarized-light component of a laser beam from the excitation section (3b) is reflected by the reflecting mirror (4c) toward the reflecting mirror (4b). Further, a P polarized-light component of the laser beam is reflected by the reflecting mirror (4b) to the reflecting mirror (4a), and the S polarized-light component is reflected by the reflecting mirror (4a), thus a laser beam having a linearly polarized-light component as shown by an arrow (11) is outputted from the folded-type resonator (10). Accordingly, only a 1/4 wave-length mirror is used on the outside of the folded-type resonator (10); nevertheless a circularly polarized laser beam can be provided simply.
摘要翻译： PCT No.PCT / JP93 / 01494 Sec。 371日期：1994年6月15日 102（e）1994年6月15日PCT 1993年10月14日PCT PCT。 公开号WO94 / 10727 日期：1994年5月11日。一种激光振荡器，其能够通过具有简短配置的外部光学系统提供圆偏振激光束。 折叠式谐振器（10）的折叠部分包括反射镜（4a），（4b）和（4c）。 反射镜（4a）相对于激励部（3a）的光轴以45°的角度倾斜，反射镜（4c）以与激励部的光轴成45度的角度倾斜 3b）。 反射镜（4b）水平布置成使得反射镜的中心相对于反射镜（4a）和（4c）位于等腰直角三角形的顶点。 因此，来自激励部分（3b）的激光束的S偏振光分量被反射镜（4c）反射到反射镜（4b）。 此外，激光的P偏振光分量被反射镜（4b）反射到反射镜（4a），并且S偏振光分量被反射镜（4a）反射，因此激光束 从折叠式谐振器（10）输出如箭头（11）所示的线偏振光分量。 因此，在折叠型谐振器（10）的外侧仅使用1/4波长镜。 然而，可以简单地提供圆偏振激光束。
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