公开(公告)号：US20090080475A1

公开(公告)日：2009-03-26

申请号：US12233174

申请日：2008-09-18

申请人： Masashi YOSHIMURA ,  Takatomo Sasaki ,  Yusuke Mori ,  Muneyuki Nishioka ,  Tomotaka Katsura ,  Tetsuo Kojima ,  Junichi Nishimae

发明人： Masashi YOSHIMURA ,  Takatomo Sasaki ,  Yusuke Mori ,  Muneyuki Nishioka ,  Tomotaka Katsura ,  Tetsuo Kojima ,  Junichi Nishimae

IPC分类号： H01S3/10 ,  G02F1/35 ,  C01B35/10

CPC分类号： G02F1/37 ,  G02F1/3551 ,  G02F2001/3505 ,  G02F2001/354

摘要： An optical wavelength conversion element includes a cesium-lithium-borate crystal processed into a 10-mm long optical element cut in an orientation that allows a fourth harmonic of a Nd:YAG laser to be generated. A transmittance (Ta) at 3589 cm−1 in an infrared transmission spectrum of the optical element is used as an index that indicates a content of water impurities in the crystal and is independent of a polarization direction. An actual measurement of the transmittance Ta is at least 1%, without taking into account loss at an optically polished surface of the crystal. A wavelength conversion device, a ultraviolet laser irradiation apparatus, a laser processing system, and a method of manufacturing an optical wavelength conversion element are also described.

摘要翻译： 光波长转换元件包括加工成允许产生Nd：YAG激光器的四次谐波的取向切割的10mm长的光学元件的铯 - 硼酸锂晶体。 光学元件的红外透射光谱中的3589cm -1处的透射率（Ta）被用作指示晶体中的水杂质含量并且与偏振方向无关的指标。 透射率Ta的实际测量值至少为1％，而不考虑在晶体的光学抛光表面处的损耗。 还描述了波长转换装置，紫外激光照射装置，激光加工系统和制造光波长转换元件的方法。

公开(公告)号：US07948673B2

公开(公告)日：2011-05-24

申请号：US12233174

申请日：2008-09-18

申请人： Masashi Yoshimura ,  Takatomo Sasaki ,  Yusuke Mori ,  Muneyuki Nishioka ,  Tomotaka Katsura ,  Tetsuo Kojima ,  Junichi Nishimae

发明人： Masashi Yoshimura ,  Takatomo Sasaki ,  Yusuke Mori ,  Muneyuki Nishioka ,  Tomotaka Katsura ,  Tetsuo Kojima ,  Junichi Nishimae

IPC分类号： G02F1/35 ,  H01S3/10

CPC分类号： G02F1/37 ,  G02F1/3551 ,  G02F2001/3505 ,  G02F2001/354

摘要： An optical wavelength conversion element includes a cesium-lithium-borate crystal processed into a 10-mm long optical element cut in an orientation that allows a fourth harmonic of a Nd:YAG laser to be generated. A transmittance (Ta) at 3589 cm−1 in an infrared transmission spectrum of the optical element is used as an index that indicates a content of water impurities in the crystal and is independent of a polarization direction. An actual measurement of the transmittance Ta is at least 1%, without taking into account loss at an optically polished surface of the crystal. A wavelength conversion device, a ultraviolet laser irradiation apparatus, a laser processing system, and a method of manufacturing an optical wavelength conversion element are also described.

摘要翻译： 光波长转换元件包括加工成允许产生Nd：YAG激光器的四次谐波的取向切割的10mm长的光学元件的铯 - 硼酸锂晶体。 光学元件的红外透射光谱中的3589cm -1处的透射率（Ta）被用作指示晶体中的水杂质含量并且与偏振方向无关的指标。 透射率Ta的实际测量值至少为1％，而不考虑在晶体的光学抛光表面处的损耗。 还描述了波长转换装置，紫外激光照射装置，激光加工系统和制造光波长转换元件的方法。

公开(公告)号：US20050068998A1

公开(公告)日：2005-03-31

申请号：US10940817

申请日：2004-09-15

申请人： Tomotaka Katsura ,  Susumu Konno ,  Tetsuo Kojima ,  Junichi Nishimae

发明人： Tomotaka Katsura ,  Susumu Konno ,  Tetsuo Kojima ,  Junichi Nishimae

IPC分类号： G02F1/37 ,  G02F1/015 ,  G02F2/02 ,  H01L21/02 ,  H01S3/00 ,  H01S3/10 ,  H01S3/109 ,  H01S3/16

CPC分类号： H01S3/109 ,  G02F2001/3503 ,  G02F2001/3505 ,  G02F2001/354 ,  H01S3/005 ,  H01S3/1611 ,  H01S3/1643

摘要： A wavelength conversion apparatus in which output direction of a wavelength-converted laser beam, having a wavelength converted by a nonlinear optical crystal and emitted through an output-window, can be brought close to the direction of optical axis of the laser beam passing through the nonlinear optical crystal. In addition, axial deviation of the wavelength-converted laser beam converted by the nonlinear optical crystal and emitted through an output-window, can be reduced when the position of the nonlinear optical crystal is moved. The output facet of the nonlinear optical crystal is inclined at Brewster's angle with respect to the wavelength-converted laser beam. An output-window of a case containing the nonlinear optical crystal has a prism form in which the distance between a laser beam input facet and a laser beam output facet of the output-window is reduced along a direction in which the wavelength-converted laser beam, emitted from the nonlinear optical crystal, inclines.

摘要翻译： 一种波长转换装置，其中具有由非线性光学晶体转换并通过输出窗口发射的波长的波长转换激光束的输出方向可以靠近通过该激光束的激光束的光轴方向 非线性光学晶体。 此外，当非线性光学晶体的位置移动时，可以减少由非线性光学晶体转换并通过输出窗口发射的波长转换的激光束的轴向偏移。 非线性光学晶体的输出面相对于波长转换的激光束以布鲁斯特角倾斜。 包含非线性光学晶体的壳体的输出窗口具有棱镜形式，其中激光束输入面与输出窗口的激光束输出面之间的距离沿着波长转换激光束 ，从非线性光学晶体发射，倾斜。

公开(公告)号：US07170911B2

公开(公告)日：2007-01-30

申请号：US10940817

申请日：2004-09-15

申请人： Tomotaka Katsura ,  Susumu Konno ,  Tetsuo Kojima ,  Junichi Nishimae

发明人： Tomotaka Katsura ,  Susumu Konno ,  Tetsuo Kojima ,  Junichi Nishimae

IPC分类号： H01S3/109

CPC分类号： H01S3/109 ,  G02F2001/3503 ,  G02F2001/3505 ,  G02F2001/354 ,  H01S3/005 ,  H01S3/1611 ,  H01S3/1643

摘要： A wavelength conversion apparatus in which output direction of a wavelength-converted laser beam, having a wavelength converted by a nonlinear optical crystal and emitted through an output-window, can be brought close to the direction of optical axis of the laser beam passing through the nonlinear optical crystal. In addition, axial deviation of the wavelength-converted laser beam converted by the nonlinear optical crystal and emitted through an output-window, can be reduced when the position of the nonlinear optical crystal is moved. The output facet of the nonlinear optical crystal is inclined at Brewster's angle with respect to the wavelength-converted laser beam. An output-window of a case containing the nonlinear optical crystal has a prism form in which the distance between a laser beam input facet and a laser beam output facet of the output-window is reduced along a direction in which the wavelength-converted laser beam, emitted from the nonlinear optical crystal, inclines.

摘要翻译： 一种波长转换装置，其中具有由非线性光学晶体转换并通过输出窗口发射的波长的波长转换激光束的输出方向可以靠近通过该激光束的激光束的光轴方向 非线性光学晶体。 此外，当非线性光学晶体的位置移动时，可以减少由非线性光学晶体转换并通过输出窗口发射的波长转换的激光束的轴向偏移。 非线性光学晶体的输出面相对于波长转换的激光束以布鲁斯特角倾斜。 包含非线性光学晶体的壳体的输出窗口具有棱镜形式，其中激光束输入面与输出窗口的激光束输出面之间的距离沿着波长转换激光束 ，从非线性光学晶体发射，倾斜。

公开(公告)号：US08482813B2

公开(公告)日：2013-07-09

申请号：US12668908

申请日：2008-03-26

申请人： Hiroyuki Kawano ,  Tatsuki Okamoto ,  Tomotaka Katsura ,  Junichi Nishimae

发明人： Hiroyuki Kawano ,  Tatsuki Okamoto ,  Tomotaka Katsura ,  Junichi Nishimae

IPC分类号： H04N1/04

CPC分类号： G03B27/50 ,  G02B3/005 ,  G02B5/10 ,  H04N1/02845 ,  H04N1/03 ,  H04N1/0305 ,  H04N1/0306 ,  H04N1/193 ,  H04N1/1934 ,  H04N1/1935

摘要： An image-scanning device wherein plural images of an object are picked up inverted and reduced in size by image-forming optical systems arranged to be adjacent to each other, and then restored by an image processing system. Each optical system includes a first optical element having a first focal length; an aperture member located at a focus position in a rear side of the first optical element; and a second optical element provided in a rear side of the aperture member and having a second focal length shorter than the first focal length, respectively disposed from a side of the object being picked up to a side of the image pickup device. In between optical systems, corresponding image pick up devices thereof are arranged to be adjacent to each other, the image pickup devices including a region in which the images picked up by the image pickup devices are overlapped.

摘要翻译： 一种图像扫描装置，其中通过被布置为彼此相邻的图像形成光学系统来拾取物体的多个图像被反转并减小尺寸，然后由图像处理系统恢复。 每个光学系统包括具有第一焦距的第一光学元件; 位于所述第一光学元件的后侧的聚焦位置处的光阑元件; 以及第二光学元件，设置在所述光圈构件的后侧，并且具有比所述第一焦距短的第二焦距，所述第二焦距分别从被拾取的物体的一侧被提取到所述图像拾取装置的一侧。 在光学系统之间，其相应的图像拾取装置被布置为彼此相邻，图像拾取装置包括由图像拾取装置拾取的图像重叠的区域。

公开(公告)号：US20100284045A1

公开(公告)日：2010-11-11

申请号：US12668908

申请日：2008-03-26

申请人： Hiroyuki Kawano ,  Tatsuki Okamoto ,  Tomotaka Katsura ,  Junichi Nishimae

发明人： Hiroyuki Kawano ,  Tatsuki Okamoto ,  Tomotaka Katsura ,  Junichi Nishimae

IPC分类号： H04N1/04

CPC分类号： G03B27/50 ,  G02B3/005 ,  G02B5/10 ,  H04N1/02845 ,  H04N1/03 ,  H04N1/0305 ,  H04N1/0306 ,  H04N1/193 ,  H04N1/1934 ,  H04N1/1935

摘要： An image-scanning device having a large depth of field and being small in size. The image-scanning device includes a plurality of cells and an image pickup device that is located so as to correspond to the cells and that picks-up the formed images. Each cell includes a first lens having a first focal length; an aperture member located at the first focal length from the first lens; and a second lens located at a second focal length shorter than the first focal length, with respect to the image pickup device.

摘要翻译： 具有大景深且尺寸小的图像扫描装置。 图像扫描装置包括多个单元和位于与单元相对应并且拾取形成的图像的图像拾取装置。 每个单元包括具有第一焦距的第一透镜; 位于距第一透镜的第一焦距的光圈元件; 以及相对于图像拾取装置位于比第一焦距短的第二焦距的第二透镜。

公开(公告)号：US07936804B2

公开(公告)日：2011-05-03

申请号：US12513176

申请日：2007-12-06

申请人： Kuniaki Iwashiro ,  Hiroyuki Suzuki ,  Tetsuo Kojima ,  Tomotaka Katsura

发明人： Kuniaki Iwashiro ,  Hiroyuki Suzuki ,  Tetsuo Kojima ,  Tomotaka Katsura

IPC分类号： H01S3/08

CPC分类号： H01S3/08045 ,  G02F1/353 ,  G02F1/37 ,  G02F2001/3503 ,  G02F2001/3507 ,  G02F2001/354 ,  H01S3/08 ,  H01S3/08072

摘要： Two convex lenses (61, 62), each of which has a focal length “f”, and a 90 degree polarization rotator (5) are interposed between solid-state laser elements (21, 22) of a symmetrical resonator having the two solid-state laser elements (21, 22); a space between the two lenses (61, 62) is made shorter than 2f; and distances between the respective lenses (61, 62) and centers of their adjacent solid-state laser elements (21, 22) are set substantially to “f”, to thus achieve a solid-state laser capable of stably performing high power transverse single mode oscillation desirably having power of 100 W or more. There is acquired a wavelength conversion laser that is further provided with a Q switch (3) and a polarization element (4) and that causes an output fundamental wave laser beam to enter nonlinear elements (91, 92) so as to undergo wavelength conversion, thereby producing a high power harmonic laser beam having a high frequency of; desirably, about 100 kHz.

摘要翻译： 在具有两个固体的对称共振器的固体激光元件（21,22）之间插入两个具有焦距“f”的凸透镜（61,62）和90度偏振旋转器（5） 状态激光元件（21,22）; 使两个透镜（61,62）之间的空间短于2f; 并且各透镜（61,62）与其相邻的固体激光元件（21,22）的中心之间的距离设定为大致为“f”，从而实现能够稳定地执行大功率横向单 期望具有100W或更大的功率的模式振荡。 获得进一步设置有Q开关（3）和偏振元件（4）的波长转换激光器，并且使得输出基波激光束进入非线性元件（91,92）以进行波长转换， 从而产生具有高频率的高功率谐波激光束; 理想地，约100kHz。

公开(公告)号：US20100074296A1

公开(公告)日：2010-03-25

申请号：US12513176

申请日：2007-12-06

申请人： Kuniaki Iwashiro ,  Hiroyuki Suzuki ,  Tetsuo Kojima ,  Tomotaka Katsura

发明人： Kuniaki Iwashiro ,  Hiroyuki Suzuki ,  Tetsuo Kojima ,  Tomotaka Katsura

IPC分类号： H01S3/08

CPC分类号： H01S3/08045 ,  G02F1/353 ,  G02F1/37 ,  G02F2001/3503 ,  G02F2001/3507 ,  G02F2001/354 ,  H01S3/08 ,  H01S3/08072

摘要： Two convex lenses (61, 62), each of which has a focal length “f”, and a 90 degree polarization rotator (5) are interposed between solid-state laser elements (21, 22) of a symmetrical resonator having the two solid-state laser elements (21, 22); a space between the two lenses (61, 62) is made shorter than 2f; and distances between the respective lenses (61, 62) and centers of their adjacent solid-state laser elements (21, 22) are set substantially to “f”, to thus achieve a solid-state laser capable of stably performing high power transverse single mode oscillation desirably having power of 100 W or more. There is acquired a wavelength conversion laser that is further provided with a Q switch (3) and a polarization element (4) and that causes an output fundamental wave laser beam to enter nonlinear elements (91, 92) so as to undergo wavelength conversion, thereby producing a high power harmonic laser beam having a high frequency of; desirably, about 100 kHz.

摘要翻译： 在具有两个固体的对称共振器的固体激光元件（21,22）之间插入两个具有焦距“f”的凸透镜（61,62）和90度偏振旋转器（5） 状态激光元件（21,22）; 使两个透镜（61,62）之间的空间短于2f; 并且各透镜（61,62）与其相邻的固体激光元件（21,22）的中心之间的距离设定为大致为“f”，从而实现能够稳定地执行大功率横向单 期望具有100W或更大的功率的模式振荡。 获得进一步设置有Q开关（3）和偏振元件（4）的波长转换激光器，并且使得输出基波激光束进入非线性元件（91,92）以进行波长转换， 从而产生具有高频率的高功率谐波激光束; 理想地，约100kHz。

公开(公告)号：US08767786B2

公开(公告)日：2014-07-01

申请号：US13140073

申请日：2009-04-21

申请人： Tomotaka Katsura ,  Tatsuki Okamoto ,  Kunihiko Nishimura

发明人： Tomotaka Katsura ,  Tatsuki Okamoto ,  Kunihiko Nishimura

IPC分类号： H01S3/04

CPC分类号： B23K26/40 ,  B23K26/0853 ,  B23K26/355 ,  B23K2101/40 ,  B23K2103/50

摘要： To provide a conveying unit that holds a workpiece and conveys the workpiece at a constant rate in one direction, a laser oscillator that emits a pulsed laser beam, a splitter that splits a pulsed laser beam into a pattern having a predetermined geometric pitch, a first deflector that scans the split pulsed laser beam in the other direction substantially orthogonal to the one direction, a second deflector that adjusts and deflects the split pulsed laser beam deflected by the first deflector on the surface to be processed in the one direction so as to scan the resultant pulsed laser beam onto the surface to be processed at a constant rate equal to a rate at which the workpiece is conveyed, and a condenser that condenses the split pulsed laser beam deflected by the second deflector onto the surface to be processed.

摘要翻译： 为了提供保持工件并以一个方向以恒定速率输送工件的输送单元，发射脉冲激光束的激光振荡器，将脉冲激光束分成具有预定几何间距的图案的分离器，第一 偏转器，其沿着与该一个方向大致正交的另一个方向扫描分离的脉冲激光束;第二偏转器，其在一个方向上调整和偏转被第一偏转器偏转的待分割脉冲激光束，以在待处理的表面上扫描 所产生的脉冲激光束以等于工件输送速率的恒定速率被加工到要处理的表面上，以及冷凝器，其将由第二偏转器偏转的分裂脉冲激光束冷凝到待处理的表面上。

公开(公告)号：US09188834B2

公开(公告)日：2015-11-17

申请号：US14007469

申请日：2012-03-13

申请人： Shuichi Fujikawa ,  Susumu Konno ,  Keisuke Furuta ,  Tomotaka Katsura

发明人： Shuichi Fujikawa ,  Susumu Konno ,  Keisuke Furuta ,  Tomotaka Katsura

IPC分类号： G02F1/35 ,  G02F1/37 ,  G02F1/355 ,  H01S3/109 ,  H01S3/08 ,  H01S3/081 ,  H01S3/082 ,  H01S3/0941 ,  H01S3/117 ,  H01S3/16 ,  H01S3/00

CPC分类号： G02F1/37 ,  G02F1/3551 ,  G02F2001/354 ,  H01S3/0092 ,  H01S3/08054 ,  H01S3/08059 ,  H01S3/0815 ,  H01S3/082 ,  H01S3/0941 ,  H01S3/109 ,  H01S3/117 ,  H01S3/1611 ,  H01S3/1643

摘要： A wavelength conversion crystal including: a single nonlinear optical crystal which satisfies both of a first phase-matching condition and a second phase-matching condition, the first phase-matching condition being required for first wavelength conversion to convert a fundamental wave having a wavelength of 1064 nm into a second harmonic having a wavelength of 532 nm, and the second phase-matching condition being required for second wavelength conversion to convert the light having a wavelength of 532 nm into a fourth harmonic having a wavelength of 266 nm; and a first reflective face and a second reflective face for reflecting the light having a wavelength of 532 nm generated by the first wavelength conversion to supply it to the second wavelength conversion. This approach can efficiently generate a third or higher-order harmonic with a reliable and simple configuration.

摘要翻译： 一种波长转换晶体，包括：单一非线性光学晶体，其满足第一相位匹配条件和第二相位匹配条件，第一相位匹配条件是第一波长转换所需的，以将波长为 1064nm变为波长为532nm的二次谐波，第二波长转换所需的第二相位匹配条件将波长为532nm的光转换成波长为266nm的四次谐波; 以及第一反射面和第二反射面，用于反射通过第一波长转换产生的波长为532nm的光，以将其提供给第二波长转换。 这种方法可以有效地生成具有可靠和简单配置的第三或更高次谐波。