公开(公告)号：US10481467B2

公开(公告)日：2019-11-19

申请号：US15982214

申请日：2018-05-17

申请人： Takumi Satoh ,  Yasuhiro Higashi ,  Yoshio Wada ,  Toshiyuki Ikeoh ,  Yoshiharu Urata

发明人： Takumi Satoh ,  Yasuhiro Higashi ,  Yoshio Wada ,  Toshiyuki Ikeoh ,  Yoshiharu Urata

IPC分类号： G02F1/35 ,  G01N21/3586 ,  G02F3/02

摘要： A terahertz wave generation apparatus includes a plurality of laser light sources configured to generate laser beams respectively having different wavelengths; and a terahertz wave generating element configured to receive the laser beams having different wavelengths and generate a terahertz wave from the laser beams. The plurality of laser light sources include fiber laser light sources respectively including parameters that can be controlled independently, and the terahertz wave generating element includes a nonlinear optical crystal.

公开(公告)号：US20060165135A1

公开(公告)日：2006-07-27

申请号：US11312452

申请日：2005-12-21

申请人： Takayo Ogawa ,  Satoshi Wada ,  Yuji Oki ,  Yoshiharu Urata

发明人： Takayo Ogawa ,  Satoshi Wada ,  Yuji Oki ,  Yoshiharu Urata

IPC分类号： H01S3/113

CPC分类号： H01S3/113 ,  H01S3/0401 ,  H01S3/0606 ,  H01S3/094038 ,  H01S3/1061 ,  H01S3/1611 ,  H01S3/1671

摘要： A saturable absorber functioning as a Q-switch is disposed on a path of a light in a laser resonator provided with a laser medium, the saturable absorber disposed in the laser resonator is transferred relatively toward the path of the light, and an initial transmittance of the saturable absorber in the case when the light passes through the saturable absorber is changed in order to achieve such effect that a scale of the whole equipment is not upsized, it is in excellent in workability and convenient, besides there is no fear of decreasing stability in a pulsed laser oscillation.

摘要翻译： 作为Q开关的饱和吸收体设置在设置有激光介质的激光谐振器的光路上，设置在激光谐振器中的可饱和吸收体相对于光的路径传递，初始透射率 在光通过可饱和吸收体的情况下的可饱和吸收体发生变化，以达到整个设备的规模不增大的效果，其加工性和方便性优异，而且不用担心降低稳定性 在脉冲激光振荡中。

公开(公告)号：US07755745B2

公开(公告)日：2010-07-13

申请号：US12164880

申请日：2008-06-30

申请人： Yoshiharu Urata ,  Satoshi Wada ,  Kohei Mizutani

发明人： Yoshiharu Urata ,  Satoshi Wada ,  Kohei Mizutani

IPC分类号： G01P3/36

CPC分类号： H01S3/0612 ,  G01S7/4811 ,  G01S7/484 ,  G01S17/58 ,  G01S17/95 ,  H01S3/061 ,  H01S3/08054 ,  H01S3/09403 ,  H01S3/09415 ,  H01S3/10092 ,  H01S3/161 ,  H01S3/1616 ,  H01S3/1643 ,  H01S3/1685 ,  Y02A90/19

摘要： A coherent Doppler lidar which can oscillate high energy pulses and output laser beams in a longer wavelength range of 1.5 μm to the atmosphere is provided. The coherent Doppler lidar has a pulse laser an oscillation wavelength of which is controlled by means of injection locking of a seed light output from a master laser, wherein the pulse laser is a type in which a laser medium is disposed in a resonator, a pulse light of a predetermined repetition frequency is input to the laser medium as an excitation light, whereby pulse laser oscillation is generated in the resonator to output pulse laser beams from the resonator, and the laser medium being a type which has at least a region having Tm, Ho:YAG ceramics, and is excited by the excitation light to output pulse laser beams in 2 μm wavelength band.

摘要翻译： 提供了一种相干多普勒激光雷达，其能够振荡高能量脉冲并将输出的激光束在1.5μm的较长波长范围内输送到大气中。 相干多普勒激光雷达具有脉冲激光器，其振荡波长通过从主激光器输出的种子光的注入锁定来控制，其中脉冲激光器是激光介质设置在谐振器中的类型，脉冲 预定重复频率的光作为激发光被输入到激光介质中，由此在谐振器中产生脉冲激光振荡以从谐振器输出脉冲激光束，并且激光介质是具有至少具有Tm ，Ho：YAG陶瓷，并被激发光激发以输出2μm波长带的脉冲激光束。

公开(公告)号：US06567442B2

公开(公告)日：2003-05-20

申请号：US09779852

申请日：2001-02-09

申请人： Yoshiharu Urata ,  Satoshi Wada ,  Hideo Tashiro

发明人： Yoshiharu Urata ,  Satoshi Wada ,  Hideo Tashiro

IPC分类号： H01S316

CPC分类号： H01S3/16 ,  H01S3/1611 ,  H01S3/1643

摘要： A laser device which has an excellent characteristic originally exerted by an yttrium-aluminum-garnet crystal doped with neodymium and is entirely reduced in size by using an entirely downsized laser medium is provided. The laser device is constituted such that a laser medium is disposed in a resonator, excited light is incident upon the laser medium so as to cause laser oscillation in the resonator, and laser light is emitted from the resonator. An yttrium-aluminum-garnet single crystal is used as the laser medium, in which neodymium is added at a concentration exceeding an atomicity ratio of 1.3%.

摘要翻译： 本发明提供了一种具有优异特性的激光装置，其特征在于，由掺杂有钕的钇 - 铝 - 石榴石晶体产生的，并且通过使用完全小型化的激光介质，其尺寸完全减小。 激光装置构成为将激光介质设置在谐振器中，激发光入射到激光介质上，从而在谐振器中引起激光振荡，并且从谐振器发射激光。 使用钇 - 铝 - 石榴石单晶作为激光介质，其中以超过原子比为1.3％的浓度添加钕。

公开(公告)号：US07961378B2

公开(公告)日：2011-06-14

申请号：US12611456

申请日：2009-11-03

申请人： Shinichi Imai ,  Yoshiharu Urata

发明人： Shinichi Imai ,  Yoshiharu Urata

IPC分类号： G02F2/02 ,  H01S3/10

CPC分类号： G02F1/3532 ,  G02F2001/3546

摘要： A wavelength conversion light source apparatus includes a fundamental wave light source configured to emit a fundamental wave, a nonlinear crystal configured to convert a wavelength of the fundamental wave by being irradiated with the fundamental wave and making the fundamental wave pass therethrough, and a movement unit configured to place the nonlinear crystal thereon and continuously move the nonlinear crystal within a plane, where a phase matching condition is not violated, so that a passage path of the fundamental wave passing through the nonlinear crystal is changed.

摘要翻译： 波长转换光源装置包括：发射基波的基波光源;被配置为通过照射基波而使基波通过的基波的波长转换的非线性晶体;以及移动单元 被配置为将非线性晶体放置在其上，并且在没有违反相位匹配条件的平面内连续地移动非线性晶体，从而改变通过非线性晶体的基波的通过路径。

公开(公告)号：US20070064750A1

公开(公告)日：2007-03-22

申请号：US11523028

申请日：2006-09-19

申请人： Yushi Kaneda ,  Yoshiharu Urata ,  Satoshi Wada ,  Shinichi Imai

发明人： Yushi Kaneda ,  Yoshiharu Urata ,  Satoshi Wada ,  Shinichi Imai

IPC分类号： H01S3/10

CPC分类号： H01S3/2375 ,  G02F1/3532 ,  G02F2001/354 ,  H01S3/02 ,  H01S3/2383

摘要： The present invention provides a deep ultraviolet laser apparatus exhibiting high robustness which can generate laser beams in a wavelength region of wavelengths of from 198.3 to 198.8 nm, further may be loaded on a variety of apparatuses as a light source for lighting, and is practicable and a size of the whole structure of thereof is reduced. The deep ultraviolet laser apparatus is arranged in such that laser beams having a wavelength of from 1064 to 1065 nm pulse-output from a first light source is a first fundamental wave; fourth harmonic obtained by wavelength-converting the first fundamental wave by means of a first wave-length conversion means is a second fundamental wave; laser beams having a wavelength of from 1560 to 1570 nm pulse-output from a second light source is a third fundamental wave; second harmonic obtained by wavelength-converting the third fundamental wave by means of a second wave-length conversion means is a fourth fundamental wave; and laser beams having a wavelength of from 198.3 to 198.8 nm which are a sum-frequency light of the second fundamental wave and the fourth fundamental wave are generated by means of a sum-frequency wave generation means.

摘要翻译： 本发明提供一种能够在198.3〜198.8nm的波长范围内产生激光的高鲁棒性的深紫外线激光装置，还可以作为照明用光源装载在各种装置上，是切实可行的 其整体结构的尺寸减小。 深紫外线激光装置被布置成使得从第一光源脉冲输出的具有1064至1065nm波长的激光束是第一基波; 第二基波是通过第一波长转换装置对第一基波进行波长转换而获得的四次谐波; 从第二光源脉冲输出的具有1560至1570nm波长的激光束是第三基波; 通过第二波长转换装置对第三基波进行波长转换而得到的二次谐波是第四基波; 并且通过和频波产生装置产生作为第二基波和第四基波的和频光的波长为198.3至198.8nm的激光束。

公开(公告)号：US20070064749A1

公开(公告)日：2007-03-22

申请号：US11523027

申请日：2006-09-19

申请人： Yushi Kaneda ,  Yoshiharu Urata ,  Satoshi Wada ,  Shinichi Imai

发明人： Yushi Kaneda ,  Yoshiharu Urata ,  Satoshi Wada ,  Shinichi Imai

IPC分类号： H01S3/10

CPC分类号： H01S3/2375 ,  G02F1/3532 ,  G02F2001/354 ,  H01S3/06754 ,  H01S3/2383 ,  H01S5/00

摘要： In order to generate efficiently a deep ultraviolet laser beam having a wavelength in a deep ultraviolet region and to make the generated laser beam to be high output, it is arranged in such that a laser beam having about 227 nm wavelength is generated by sum-frequency mixing of fourth harmonic of the laser beams obtained by amplifying semiconductor laser beams having 1064.0 to 1065.0 nm wavelengths by means of an optical fiber amplifier, and the laser beams obtained by amplifying semiconductor laser beams having 1557.0 to 1571.0 nm wavelengths by means of another optical fiber amplifier; and further laser beams having 198.4 to 198.7 nm wavelengths are generated by sum-frequency mixing of the above sum-frequency mixed laser beam and the above-described semiconductor laser beams having 1557.0 to 1571.0 nm wavelengths.

摘要翻译： 为了有效地生成具有深紫外区域的波长的深紫外激光束，并且使所生成的激光束成为高输出，其布置成使得具有约227nm波长的激光束由和频产生 通过利用光纤放大器对通过放大具有1064.0至1065.0nm波长的半导体激光束获得的激光束的四次谐波的混合，以及通过另一光纤放大具有1557.0至1571.0nm波长的半导体激光束而获得的激光束 放大器 并且通过上述和频混合激光束和上述具有1557.0至1571.0nm波长的半导体激光束的和频混频产生具有198.4至198.7nm波长的另外的激光束。