公开(公告)号：US08824521B2

公开(公告)日：2014-09-02

申请号：US14237308

申请日：2012-08-01

申请人： Takunori Taira ,  Weipeng Kong

发明人： Takunori Taira ,  Weipeng Kong

IPC分类号： H01S3/06 ,  H01S3/094

CPC分类号： H01S3/094049 ,  H01S3/0405 ,  H01S3/0604 ,  H01S3/0612 ,  H01S3/0941 ,  H01S3/1618 ,  H01S3/1643

摘要： A solid laser apparatus which includes: two reflection elements for forming an oscillator; a plate-shaped gain medium being disposed between the two reflection elements, thereby augmenting a stimulated emission light in a thickness-wise direction; a doughnut- or deformed-doughnut-type planar waveguide being disposed so as to make an inner peripheral face thereof come in contact with an outer peripheral face of the plate-shaped gain medium; and a plurality of excited-light sources being directed in five or more directions, the excited-light sources being coupled to an outer peripheral face of the doughnut- or deformed-doughnut-type planar waveguide so as to make excited lights propagate from the outer peripheral face of the doughnut- or deformed-doughnut-type planar waveguide to the plate-shaped gain medium.

摘要翻译： 一种固体激光装置，包括：用于形成振荡器的两个反射元件; 设置在两个反射元件之间的板状增益介质，从而增加沿厚度方向的受激发射光; 设置成使其内周面与板状增益介质的外周面接触的面团或变形环形平面波导， 并且多个激发光源被引导在五个或更多个方向上，激发光源耦合到面团或变形环形平面波导的外周面，以使激发光从外部传播 面团或变形环形平面波导的周边面到板状增益介质。

公开(公告)号：US20140169395A1

公开(公告)日：2014-06-19

申请号：US14237308

申请日：2012-08-01

申请人： Takunori Taira ,  Weipeng Kong

发明人： Takunori Taira ,  Weipeng Kong

IPC分类号： H01S3/094

CPC分类号： H01S3/094049 ,  H01S3/0405 ,  H01S3/0604 ,  H01S3/0612 ,  H01S3/0941 ,  H01S3/1618 ,  H01S3/1643

摘要： A solid laser apparatus which includes: two reflection elements for forming an oscillator; a plate-shaped gain medium being disposed between the two reflection elements, thereby augmenting a stimulated emission light in a thickness-wise direction; a doughnut- or deformed-doughnut-type planar waveguide being disposed so as to make an inner peripheral face thereof come in contact with an outer peripheral face of the plate-shaped gain medium; and a plurality of excited-light sources being directed in five or more directions, the excited-light sources being coupled to an outer peripheral face of the doughnut- or deformed-doughnut-type planar waveguide so as to make excited lights propagate from the outer peripheral face of the doughnut- or deformed-doughnut-type planar waveguide to the plate-shaped gain medium.

摘要翻译： 一种固体激光装置，包括：用于形成振荡器的两个反射元件; 设置在两个反射元件之间的板状增益介质，从而增加沿厚度方向的受激发射光; 设置成使其内周面与板状增益介质的外周面接触的面团或变形环形平面波导， 并且多个激发光源被引导在五个或更多个方向上，激发光源耦合到面团或变形环形平面波导的外周面，以使激发光从外部传播 面团或变形环形平面波导的周边面到板状增益介质。

公开(公告)号：US08223813B2

公开(公告)日：2012-07-17

申请号：US13004473

申请日：2011-01-11

申请人： Masaki Tsunekane ,  Takunori Taira

发明人： Masaki Tsunekane ,  Takunori Taira

IPC分类号： H01S3/04

CPC分类号： H01S3/0941 ,  H01S3/042 ,  H01S3/06 ,  H01S3/1611

摘要： A compact semiconductor laser pumped solid-state laser device is provided that can suppress unnecessary parasitic oscillation in a microchip and efficiently extract energy. The semiconductor laser pumped solid-state laser device comprises: a solid-state laser core 1 disposed in the center and formed of a laser medium containing neodymium (Nd) as a laser oscillation element; a light guide region 2 integrally formed around the solid-state laser core 1, having approximately rectangular shape with four linear light entrance windows formed on the outer periphery thereof, and containing samarium (Sm) as a laser oscillation element; and a heat sink 4 disposed on one face of the light guide region 2 including the solid-state core 1, wherein laser oscillation is performed by introducing a pumping light 14 through the light entrance windows 3 and propagating the pumping light 14 through the light guide region 2 to pump the solid-state laser core 1, and wherein a laser oscillation light is extracted from the upper face of the solid-state laser core 1 opposite to the face contacting the heat sink 4.

摘要翻译： 提供了可以抑制微芯片中的不必要的寄生振荡并且有效地提取能量的紧凑型半导体激光泵浦固态激光器件。 半导体激光泵浦固态激光器件包括：固态激光器芯1，其设置在中心并由包含钕（Nd）作为激光振荡元件的激光介质形成; 整体地形成在固体激光器芯1周围的导光区域2，具有形成在其外周上的四个线性光入射窗的大致矩形形状，并且包含作为激光振荡元件的钐（Sm） 以及设置在包括固体芯1的导光区域2的一个面上的散热片4，其中激光振荡是通过引入光入射窗口3的泵浦光14并通过导光体传播的。 区域2来泵浦固态激光器芯1，并且其中激光振荡光从与固体激光器芯1的与散热片4接触的面相反的上表面提取。

公开(公告)号：US07661401B2

公开(公告)日：2010-02-16

申请号：US11413058

申请日：2006-04-28

申请人： Yukinobu Anezaki ,  Kenji Kanehara ,  Aki Abe ,  Tohru Yoshinaga ,  Takunori Taira

发明人： Yukinobu Anezaki ,  Kenji Kanehara ,  Aki Abe ,  Tohru Yoshinaga ,  Takunori Taira

IPC分类号： F02B19/00 ,  F02P23/00 ,  F23C15/00

CPC分类号： F02B23/104 ,  F02B2075/125 ,  F02D35/022 ,  F02D35/023 ,  F02D41/1458 ,  F02P23/04 ,  Y02T10/125

摘要： A laser type ignition device for an internal combustion engine includes a laser oscillator mounted in the internal combustion engine so as to focus its laser beam on an air-fuel mixture supplied into the combustion chamber, a pressure sensor for detecting pressure in the combustion chamber, a power source for the laser oscillator and a control unit for controlling the power source to supply the laser oscillator with the current whose amount changes according to the pressure in the combustion chamber. The power of the laser beam increases as the pressure in the combustion chamber decreases to completely ignite the air-fuel mixture.

摘要翻译： 一种用于内燃机的激光式点火装置，包括安装在内燃机中的激光振荡器，以便将其激光束聚焦在供应到燃烧室中的空气燃料混合物上;一个压力传感器，用于检测燃烧室中的压力， 用于激光振荡器的电源和用于控制电源以向激光振荡器提供其量随着燃烧室中的压力而变化的电流的控制单元。 激光束的功率随着燃烧室中的压力降低而完全点燃空气 - 燃料混合物。

公开(公告)号：US20050063039A1

公开(公告)日：2005-03-24

申请号：US10480905

申请日：2002-06-14

申请人： Sunao Kurimura ,  Takunori Taira ,  Hirokazu Taniguchi

发明人： Sunao Kurimura ,  Takunori Taira ,  Hirokazu Taniguchi

IPC分类号： G02F1/37 ,  G02F1/377 ,  G02F1/39 ,  G02F3/00 ,  G02F2/02

CPC分类号： G02F1/3775

摘要： When forming a periodically-poled structure on a nonlinear optical crystal 1 that permits wavelength conversion and/or optical computing, the group velocity matching conditions are determined to synchronize the group velocity of the incident light L1 with that of the outgoing light L2, and the polarization reversal period of the periodically-poled structure is determined to satisfy quasi-phase matching conditions for the aforementioned wavelength conversion and/or optical computing. As a result, the problems associated with wavelength conversion of the pulsed light due to difference in the group velocity are suppressed pulsed light and a preferable element for wavelength conversion and optical computing can be provided.

摘要翻译： 当在允许波长转换和/或光学计算的非线性光学晶体1上形成周期性极化结构时，确定组速度匹配条件以使入射光L1的组速度与出射光L2的组速度同步， 确定周期极化结构的极化反转周期以满足上述波长转换和/或光学计算的准相位匹配条件。 结果，由于组速度的差异而与脉冲光的波长转换有关的问题被抑制脉冲光，并且可以提供用于波长转换和光学计算的优选元件。

公开(公告)号：US20140010247A1

公开(公告)日：2014-01-09

申请号：US14006742

申请日：2012-05-21

申请人： Takunori Taira ,  Simon Joly ,  Rakesh Bhandari

发明人： Takunori Taira ,  Simon Joly ,  Rakesh Bhandari

IPC分类号： H01S3/11

CPC分类号： H01S3/1115 ,  H01S3/025 ,  H01S3/0405 ,  H01S3/042 ,  H01S3/0604 ,  H01S3/0612 ,  H01S3/0621 ,  H01S3/1028 ,  H01S3/113 ,  H01S3/1611 ,  H01S3/1673

摘要： To provide a passive Q-switch-type solid laser apparatus for outputting a high peak-power pulse laser whose pulse energy is large and pulse-time width is small. A passive Q-switch-type solid laser apparatus has: two reflection elements for forming an oscillator; a solid gain medium being disposed between the two reflection elements; a saturable absorber being disposed between the two reflection elements; an excitation device for exciting the solid gain medium; and a cross section control device for making at least one of a stimulated emission cross section of the solid gain medium and an absorption cross section of the saturable absorber closer to another one of them; and the cross section control device is equipped with at least one or both of a temperature control device for retaining the solid gain medium at a predetermined temperature and an oscillatory-wavelength control device for fixating an oscillatory wavelength at a predetermined wavelength.

摘要翻译： 提供一种用于输出脉冲能量大且脉冲宽度小的高峰值功率脉冲激光器的无源Q开关型固体激光装置。 无源Q开关型固体激光装置具有：用于形成振荡器的两个反射元件; 固体增益介质设置在两个反射元件之间; 设置在两个反射元件之间的可饱和吸收体; 用于激发固体增益介质的激励装置; 以及横截面控制装置，用于使固体增益介质的受激发射横截面和可饱和吸收体的吸收截面中的至少一个更靠近其中一个; 并且横截面控制装置配备有用于将固体增益介质保持在预定温度的温度控制装置和用于固定预定波长的振荡波长的振荡波长控制装置中的至少一个或两个。

公开(公告)号：US20110176566A1

公开(公告)日：2011-07-21

申请号：US13004473

申请日：2011-01-11

申请人： Masaki Tsunekane ,  Takunori Taira

发明人： Masaki Tsunekane ,  Takunori Taira

IPC分类号： H01S3/04

CPC分类号： H01S3/0941 ,  H01S3/042 ,  H01S3/06 ,  H01S3/1611

摘要： A compact semiconductor laser pumped solid-state laser device is provided that can suppress unnecessary parasitic oscillation in a microchip and efficiently extract energy. The semiconductor laser pumped solid-state laser device comprises: a solid-state laser core 1 disposed in the center and formed of a laser medium containing neodymium (Nd) as a laser oscillation element; a light guide region 2 integrally formed around the solid-state laser core 1, having approximately rectangular shape with four linear light entrance windows formed on the outer periphery thereof, and containing samarium (Sm) as a laser oscillation element; and a heat sink 4 disposed on one face of the light guide region 2 including the solid-state core 1, wherein laser oscillation is performed by introducing a pumping light 14 through the light entrance windows 3 and propagating the pumping light 14 through the light guide region 2 to pump the solid-state laser core 1, and wherein a laser oscillation light is extracted from the upper face of the solid-state laser core 1 opposite to the face contacting the heat sink 4.

摘要翻译： 提供了可以抑制微芯片中的不必要的寄生振荡并且有效地提取能量的紧凑型半导体激光泵浦固态激光器件。 半导体激光泵浦固态激光器件包括：固态激光器芯1，其设置在中心并由包含钕（Nd）作为激光振荡元件的激光介质形成; 整体地形成在固体激光器芯1周围的导光区域2，具有形成在其外周上的四个线性光入射窗的大致矩形形状，并且包含作为激光振荡元件的钐（Sm） 以及设置在包括固体芯1的导光区域2的一个面上的散热片4，其中激光振荡是通过引入光入射窗口3的泵浦光14并通过导光体传播的。 区域2来泵浦固态激光器芯1，并且其中激光振荡光从与固体激光器芯1的与散热片4接触的面相反的上表面提取。

公开(公告)号：US06738397B2

公开(公告)日：2004-05-18

申请号：US10121705

申请日：2002-04-15

申请人： Shuhei Yamamoto ,  Yoshihito Hirano ,  Ichiro Shoji ,  Takunori Taira ,  Sunao Kurimura

发明人： Shuhei Yamamoto ,  Yoshihito Hirano ,  Ichiro Shoji ,  Takunori Taira ,  Sunao Kurimura

IPC分类号： H01S310

CPC分类号： G02F1/3534 ,  G02F2203/13

摘要： A solid-state light source apparatus includes a first excitation laser light source for outputting a laser beam of a first wavelength, a second excitation laser light source for outputting a laser beam of a second wavelength, a difference frequency between the laser beam of the first wavelength and the laser beam of the second wavelength being in a terahertz band, and a semiconductor pseudo phase matching device which is disposed at a place where a first optical axis of the laser beam of the first wavelength overlaps with a second optical axis of the laser beam of the second wavelength, and generates a terahertz beam in a direction coaxial with the first and second optical axes on the basis of irradiation of the laser beams of the first and second wavelengths. Thus, high output and high efficiency terahertz wave generation can be easily and certainly realized while a narrow line width characteristic is maintained.

摘要翻译： 固态光源装置包括：第一激发光源，用于输出第一波长的激光;第二激光激光源，其输出第二波长的激光;第二激光激光源， 并且所述第二波长的激光束处于太赫兹波段，以及半导体伪相位匹配装置，其设置在所述第一波长的所述激光束的第一光轴与所述激光的第二光轴重叠的位置处 并且基于第一和第二波长的激光束的照射，在与第一和第二光轴同轴的方向上产生太赫兹光束。 因此，可以容易且可靠地实现高输出和高效率的太赫兹波生成，同时保持窄的线宽特性。

公开(公告)号：US20110150026A1

公开(公告)日：2011-06-23

申请号：US12968990

申请日：2010-12-15

申请人： Masaki Tsunekane ,  Takunori Taira ,  Kenji Kanehara

发明人： Masaki Tsunekane ,  Takunori Taira ,  Kenji Kanehara

IPC分类号： H01S3/094

CPC分类号： H01S3/09415 ,  F02P23/04 ,  H01S3/08059 ,  H01S3/094053 ,  H01S3/09408 ,  H01S3/1022 ,  H01S3/113 ,  H01S3/1611 ,  H01S3/1643 ,  H01S5/02208 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/06804 ,  H01S5/146 ,  H01S5/4012 ,  H01S5/4062

摘要： There is provided a semiconductor laser pumped solid-state laser device for engine ignition that can stably provide optical energy required for ignition across a wide temperature range. In the semiconductor laser pumped solid-state laser device for engine ignition, a plurality of semiconductor lasers 21, 22, 23, and 24 are used that have locking ranges, a temperature width thereof divided into a plurality of temperature ranges corresponding to a variation width of an ambient temperature, and that have the respective wavelengths falling within an absorption wavelength band of a solid-state laser medium 5 of the solid-state laser device in the temperature width of each locking range, to pump the solid-state laser medium 5 by multiplexing emitted lights from the plurality of semiconductor lasers 21, 22, 23, and 24 using a multiplexing mechanism to irradiate the solid-state laser medium 5.

摘要翻译： 提供了用于发动机点火的半导体激光泵浦固态激光装置，其可以稳定地提供在宽温度范围内点火所需的光能。 在用于发动机点火的半导体激光泵浦固体激光装置中，使用多个半导体激光器21,22,23和24，其具有锁定范围，其温度宽度被分为对应于变化宽度的多个温度范围 并且具有在每个锁定范围的温度宽度中处于固态激光装置的固体激光介质5的吸收波长带内的各个波长的泵浦固态激光介质5 通过使用多路复用机构对来自多个半导体激光器21,22,23和24的发射光进行复用来照射固态激光介质5。

公开(公告)号：US07664148B2

公开(公告)日：2010-02-16

申请号：US11661327

申请日：2005-09-06

申请人： Hiroshi Sakai ,  Hirofumi Kan ,  Takunori Taira

发明人： Hiroshi Sakai ,  Hirofumi Kan ,  Takunori Taira

IPC分类号： H01S3/11 ,  H01S3/113

CPC分类号： H01S3/113 ,  H01S3/0014 ,  H01S3/0621 ,  H01S3/0627 ,  H01S3/08036 ,  H01S3/10061

摘要： A laser apparatus 10 includes: a laser medium 11 arranged between a pair of reflecting means 12A and 12B of an optical resonator 12 and adapted to be excited to emit light; a saturable absorber 14 arranged on the optical axis L of the optical resonator 12 between the pair of reflecting means, the transmissivity thereof being adapted to increase with the absorption of emitted light 21 from the laser medium; and an excitation light source unit 13 adapted to output light 22 having a wavelength that excites the laser medium. The saturable absorber 14 is a crystalline body having first to third mutually perpendicular crystallographic axes and is arranged in the optical resonator 12 in such a manner as to have different transmissivities for emitted light in two mutually perpendicular polarization directions. In this case, a laser oscillation occurs for emitted light in the polarization direction that shows the greater transmissivity, and it is therefore possible to obtain laser beams having a stabilized polarization direction.

摘要翻译： 激光装置10包括：激光介质11，配置在光谐振器12的一对反射装置12A和12B之间，并被激发以发光; 在所述一对反射装置之间布置在所述光学谐振器12的光轴L上的可饱和吸收体14，其透射率适于随着来自激光介质的发射光21的吸收而增加; 以及适于输出具有激发激光介质的波长的光22的激发光源单元13。 可饱和吸收体14是具有第一至第三相互垂直的结晶轴的结晶体，并且以对于两个相互垂直的偏振方向的发射光具有不同透射率的方式设置在光学谐振器12中。 在这种情况下，对于显示较大透射率的偏振方向的发光，发生激光振荡，因此可以获得具有稳定的偏振方向的激光束。