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1. 发明授权

US07239654B2 Wave length plate, wavelength filter and wavelength monitor 失效
标题翻译：波长板，波长滤波器和波长监视器
公开(公告)号：US07239654B2
公开(公告)日：2007-07-03
申请号：US10250454
申请日：2002-10-31
申请人： Masao Imaki , Syuhei Yamamoto , Youhei Mikami , Yoshihito Hirano , Makoto Satou , Kenji Masuda , Yasunori Nishimura , Yuji Masuyama
发明人： Masao Imaki , Syuhei Yamamoto , Youhei Mikami , Yoshihito Hirano , Makoto Satou , Kenji Masuda , Yasunori Nishimura , Yuji Masuyama
IPC分类号： H01S3/10
CPC分类号： H01S5/0687 , G01J9/00 , G02B1/02 , G02B5/3083 , G02B27/288 , H01S5/0612 , H01S5/0683
摘要： On a plate of birefringent crystal made of an LiNbO3 crystal or an LiTaO3 crystal, a conductive substance is adhered to the whole periphery of side surfaces of the plate that intersect an incident surface of a laser beam, thereby to form a wave plate. A polarizer is provided at the latter stage of the wave plate. A wavelength is monitored based on an output from the polarizer. With this arrangement, based on the use of the LiNbO3 crystal or the LiTaO3 crystal that can be manufactured by a large quantity at low cost, it is possible to obtain polarization characteristics and wavelength discrimination characteristics that are stable against environmental changes such as temperature and external stress, by suppressing the pyroelectric effect and the piezoelectric effect of these materials.
摘要翻译：在由LiNbO 3·结晶或LiTaO 3·结晶制成的双折射晶体平板上，导电物质附着在板的侧表面的整个周边，激光束的入射面，从而形成波片。在波片的后段提供偏振器。基于偏振器的输出监视波长。利用这种布置，基于可以以低成本大量制造的LiNbO 3/3结晶或LiTaO 3·结晶的用途，可以获得极化通过抑制这些材料的热电效应和压电效应，对温度和外部应力等环境变化稳定的特性和波长辨别特性。

2. 发明授权

US07301974B2 Wavelength monitoring apparatus 失效
标题翻译：波长监测仪
公开(公告)号：US07301974B2
公开(公告)日：2007-11-27
申请号：US10477018
申请日：2001-05-08
申请人： Masao Imaki , Yoshihito Hirano , Makoto Satou , Kenji Masuda , Akihiro Adachi , Shinichi Takagi , Yasunori Nishimura
发明人： Masao Imaki , Yoshihito Hirano , Makoto Satou , Kenji Masuda , Akihiro Adachi , Shinichi Takagi , Yasunori Nishimura
IPC分类号： H01S3/13
CPC分类号： G01J9/00 , G01J4/04 , H01S5/02252 , H01S5/0687
摘要： An optical signal emitted from a semiconductor laser is converged by a lens and then received by a single uniaxial birefringent crystal having a C axis that is inclined at an angle other than 90 degrees against a laser optical axis to output an optical signal having a polarized wave component of constant intensity corresponding to the wavelength of the optical signal regardless of temperature changes. The optical signal has an ordinary ray vibrating in a direction perpendicular to a plane including both the C axis and the laser optical axis, and an extraordinary ray vibrating in a direction perpendicular to both the ordinary ray and the laser optical axis. A first main photo detector detects the intensity of a p-polarized component of the optical signal that has passed through a polarizer and a second photo detector directly receives the optical signal converged by the lens.
摘要翻译：从半导体激光器发射的光信号由透镜会聚，然后由具有相对于激光光轴倾斜成90度以外的角度的C轴的单个单轴双折射晶体接收，以输出具有偏振波的光信号对应于光信号的波长的恒定强度的分量，不管温度变化如何。光信号具有在垂直于包括C轴和激光光轴的平面的方向振动的普通光线，以及在垂直于普通光线和激光光轴的方向上振动的异常光线。第一主光电检测器检测已经通过偏振器的光信号的p偏振分量的强度，第二光检测器直接接收由透镜会聚的光信号。

3. 发明授权

US06639923B2 Semiconductor laser device for optical communication 失效
公开(公告)号：US06639923B2
公开(公告)日：2003-10-28
申请号：US10012311
申请日：2001-12-12
申请人： Makoto Sato , Kenji Masuda , Akihiro Adachi , Yasunori Nishimura , Shinichi Takagi , Masao Imaki , Yoshihito Hirano
发明人： Makoto Sato , Kenji Masuda , Akihiro Adachi , Yasunori Nishimura , Shinichi Takagi , Masao Imaki , Yoshihito Hirano
IPC分类号： H01S5022
CPC分类号： H01S5/02252 , H01L2224/48091 , H01L2924/19107 , H01S5/02284 , H01S5/02296 , H01S5/0683 , H01S5/0687 , H01L2924/00014
摘要： A backward laser beam radiated from a laser diode is received in a photo diode, and an intensity of a forward laser beam radiated from the laser diode is adjusted according to the intensity of the received backward laser beam. The forward laser beam radiated from the laser diode is collimated in a first lens held by a lens holder, and a most portion of the forward laser beam is output through a package window inclined with respect to an optical axis of the laser diode. The remaining portion of the forward laser beam is reflected on the package window as a reflected laser beam and is transmitted through the first lens to be converged in a narrow area placed above the laser diode. A light shielding plate extending in a plane orthogonal to the optical axis is arranged in a wide area including the narrow area and shields the photo diode from the reflected laser beam from. Therefore, the intensity of the forward laser beam radiated from the laser diode is correctly adjusted. Also, the light shielding plate is not soldered to the laser diode but is fixed to lens fixing posts arranged to support the lens holder. Therefore, a driving current can be supplied to the laser diode through a bonding wire without being influenced by the light shielding plate.

4. 发明授权

US06801553B2 Wavelength monitor and semiconductor laser device 失效
标题翻译：波长监视器和半导体激光器件
公开(公告)号：US06801553B2
公开(公告)日：2004-10-05
申请号：US09988662
申请日：2001-11-20
申请人： Masao Imaki , Yoshihito Hirano , Makoto Sato , Kenji Masuda , Akihiro Adachi , Yasunori Nishimura , Shinichi Takagi
发明人： Masao Imaki , Yoshihito Hirano , Makoto Sato , Kenji Masuda , Akihiro Adachi , Yasunori Nishimura , Shinichi Takagi
IPC分类号： H01S313
CPC分类号： H01S5/0687 , H01S5/005 , H01S5/02248
摘要： A wavelength monitor comprises a cylindrical lens configured to allow a laser beam emitted from a semiconductor laser to pass therethrough, first and second photodetectors configured to receive the laser beam through the cylindrical lens, and a wavelength filter disposed in an optical path between the semiconductor laser and the first photodetector.
摘要翻译：波长监视器包括被配置为允许从半导体激光器发射的激光束通过的柱面透镜，被配置为接收通过柱面透镜的激光束的第一和第二光电检测器，以及设置在半导体激光器之间的光路中的波长滤光器和第一光电检测器。

5. 发明授权

US06567437B1 Wavelength monitoring device and its adjusting method, and wavelength stabilizing light source and transmission system having plural wavelength stabilizing light source 失效
标题翻译：波长监视装置及其调节方法，以及具有多个波长稳定光源的波长稳定光源和传输系统
公开(公告)号：US06567437B1
公开(公告)日：2003-05-20
申请号：US09617089
申请日：2000-07-14
申请人： Masao Imaki , Yoshihito Hirano , Makoto Satou , Kenji Masuda , Takeshi Nakamura
发明人： Masao Imaki , Yoshihito Hirano , Makoto Satou , Kenji Masuda , Takeshi Nakamura
IPC分类号： H01S313
CPC分类号： H01S5/0687 , G01J9/00
摘要： A wavelength monitoring device comprising: a polarization state changing means having a first birefringent crystal, which inputs a polarized laser light and changes the polarization state of the input laser light after it is transmitted through the first birefringent crystal, in accordance with the wavelength of the input laser light, a polarized light selecting and receiving means, which inputs the laser light transmitted through the polarization state changing means and selectively receives a predetermined linearly polarized component, and a wavelength detection means for monitoring the wavelength of the laser light input to the first birefringent crystal by use of an optical signal output from the polarized light selecting and receiving means.
摘要翻译：一种波长监视装置，包括：具有第一双折射晶体的偏振状态改变装置，其输入偏振激光，并且在透射通过第一双折射晶体之后改变输入激光的偏振状态，根据输入激光，偏振光选择和接收装置，其输入透射通过偏振状态改变装置的激光并选择性地接收预定的线偏振分量;以及波长检测装置，用于监测输入到第一像素的激光的波长通过使用从偏振光选择和接收装置输出的光信号来实现双折射晶体。

6. 发明申请

US20080095202A1 Mode Control Waveguide Laser Device 有权
标题翻译：模式控制波导激光设备
公开(公告)号：US20080095202A1
公开(公告)日：2008-04-24
申请号：US11579454
申请日：2005-03-30
申请人： Takayuki Yanagisawa , Yoshihito Hirano , Syuhei Yamamoto , Masao Imaki , Kiyohide Sakai , Yasuharu Koyata
发明人： Takayuki Yanagisawa , Yoshihito Hirano , Syuhei Yamamoto , Masao Imaki , Kiyohide Sakai , Yasuharu Koyata
IPC分类号： H01S3/063
CPC分类号： H01S3/0632 , H01S3/0405 , H01S3/0612 , H01S3/08072 , H01S3/094053 , H01S3/09415 , H01S3/109
摘要： Provided is a device capable of oscillating a plurality of oscillation modes within a laser medium for obtaining a fundamental wave output which is easy in output scaling and high in luminance, thereby enabling a second harmonic conversion which is high in efficiency. The device includes: a laser medium (5) that is planar, has a waveguide structure in a thickness direction of a cross-section that is perpendicular to an optical axis (6), and has a cyclic lens effect in a direction perpendicular to the optical axis (6) and the thickness direction; a clad (4) that is bonded onto one surface of the laser medium (5); and heat sink (3) that is bonded onto one surface side of the laser medium (5) through the clad (4), and in the device, a laser oscillation includes a laser oscillation that oscillates in a waveguide mode of the laser medium (5), and a laser oscillation that oscillates in a plurality of resonator modes that are generated by a cyclic lens effect of the laser medium (5).
摘要翻译：提供了一种能够在激光介质内振荡多个振荡模式的装置，用于获得输出缩放容易且亮度高的基波输出，从而实现效率高的二次谐波转换。该装置包括：平面的激光介质（5），在与光轴（6）垂直的横截面的厚度方向上具有波导结构，并且在垂直于光轴的方向上具有循环透镜效应光轴（6）和厚度方向; 在激光介质（5）的一个表面上结合的包层（4）; 以及通过包层（4）结合到激光介质（5）的一个表面侧的散热器（3），并且在该器件中，激光振荡包括以激光介质的波导模式振荡的激光振荡（以及以由激光介质（5）的循环透镜效应产生的多个谐振器模式振荡的激光振荡。

7. 发明授权

US07839908B2 Mode control waveguide laser device 有权
标题翻译：模式控制波导激光器件
公开(公告)号：US07839908B2
公开(公告)日：2010-11-23
申请号：US11579454
申请日：2005-03-30
申请人： Takayuki Yanagisawa , Yoshihito Hirano , Syuhei Yamamoto , Masao Imaki , Kiyohide Sakai , Yasuharu Koyata
发明人： Takayuki Yanagisawa , Yoshihito Hirano , Syuhei Yamamoto , Masao Imaki , Kiyohide Sakai , Yasuharu Koyata
IPC分类号： H01S3/04
CPC分类号： H01S3/0632 , H01S3/0405 , H01S3/0612 , H01S3/08072 , H01S3/094053 , H01S3/09415 , H01S3/109
摘要： Provided is a device capable of oscillating a plurality of oscillation modes within a laser medium for obtaining a fundamental wave output which is easy in output scaling and high in luminance, thereby enabling a second harmonic conversion which is high in efficiency. The device includes: a laser medium (5) that is planar, has a waveguide structure in a thickness direction of a cross-section that is perpendicular to an optical axis (6), and has a cyclic lens effect in a direction perpendicular to the optical axis (6) and the thickness direction; a clad (4) that is bonded onto one surface of the laser medium (5); and heat sink (3) that is bonded onto one surface side of the laser medium (5) through the clad (4), and in the device, a laser oscillation includes a laser oscillation that oscillates in a waveguide mode of the laser medium (5), and a laser oscillation that oscillates in a plurality of resonator modes that are generated by a cyclic lens effect of the laser medium (5).
摘要翻译：提供了一种能够在激光介质内振荡多个振荡模式的装置，用于获得输出缩放容易且亮度高的基波输出，从而实现效率高的二次谐波转换。该装置包括：平面的激光介质（5），在与光轴（6）垂直的横截面的厚度方向上具有波导结构，并且在垂直于光轴的方向上具有循环透镜效应光轴（6）和厚度方向; 在激光介质（5）的一个表面上结合的包层（4）; 以及通过包层（4）结合到激光介质（5）的一个表面侧的散热器（3），并且在该器件中，激光振荡包括以激光介质的波导模式振荡的激光振荡（以及以由激光介质（5）的循环透镜效应产生的多个谐振器模式振荡的激光振荡。

8. 发明授权

US07693194B2 Fundamental-wave light source and wavelength converter 有权
标题翻译：基波光源和波长转换器
公开(公告)号：US07693194B2
公开(公告)日：2010-04-06
申请号：US11597360
申请日：2004-08-12
申请人： Kiyohide Sakai , Yasuharu Koyata , Masao Imaki , Yoshihito Hirano , Kouhei Teramoto , Shigenori Shibue
发明人： Kiyohide Sakai , Yasuharu Koyata , Masao Imaki , Yoshihito Hirano , Kouhei Teramoto , Shigenori Shibue
IPC分类号： H01S3/13
CPC分类号： H01S5/141 , H01S5/0652 , H01S5/146 , H01S5/50
摘要： A reflection element 3 disposed in an optical waveguide element 2 returns a part of light to a semiconductor laser diode element 1 so that the semiconductor laser diode element 1 oscillates in a coherent collapse mode, and a semiconductor light amplifier 7 is optically coupled to the optical waveguide element 2, and amplifies an optical output from optical waveguide element 2, so as to provide a high-power fundamental-wave light source.
摘要翻译：设置在光波导元件2中的反射元件3将一部分光返回到半导体激光二极管元件1，使得半导体激光二极管元件1以相干折叠模式振荡，并且半导体光放大器7光耦合到光波导元件2，并且放大来自光波导元件2的光输出，以便提供高功率基波光源。

9. 发明申请

US20090080054A1 Speckle removing light source and lighting apparatus 有权
标题翻译：散斑去除光源和照明装置
公开(公告)号：US20090080054A1
公开(公告)日：2009-03-26
申请号：US11920916
申请日：2005-07-11
申请人： Yasuharu Koyata , Yoshihito Hirano , Kiyohide Sakai , Masao Imaki , Shinsuke Shikama , Jiro Suzuki , Takao Endou , Kouhei Teramoto , Shigenori Shibue
发明人： Yasuharu Koyata , Yoshihito Hirano , Kiyohide Sakai , Masao Imaki , Shinsuke Shikama , Jiro Suzuki , Takao Endou , Kouhei Teramoto , Shigenori Shibue
IPC分类号： G02B26/02 , H01S3/10
CPC分类号： G02B27/48 , G02B26/0833 , H04N9/3129 , H04N9/3161
摘要： Provided are a speckle removing light source capable of removing speckle by using laser light whose wavelength is temporally changed and a lighting apparatus for producing an image from which the speckle is removed. Provided is a speckle removing light source, including: a light source for outputting laser light; and a light frequency modulator for changing a wavelength of the laser light, in which: the wavelength of the laser light outputted from the light source is temporally changed by the light frequency modulator; and the light frequency modulator has a predetermined period set for changing the wavelength of the laser light. Also, provided is a lighting apparatus, including: a spatial light modulator illuminated with the laser light outputted from the speckle removing light source to produce an image, in which the spatial light modulator has a period set for producing the image, and the period is longer than the period for changing the wavelength of the laser light by the light frequency modulator.
摘要翻译：提供一种能够通过使用其波长在时间上变化的激光去除斑点的散斑去除光源，以及用于制造除去斑点的图像的照明装置。提供了一种除斑光源，包括：用于输出激光的光源; 以及用于改变激光波长的光频调制器，其中：从光源输出的激光的波长由光频调制器暂时改变; 并且光频调制器具有设定用于改变激光波长的预定周期。另外，本发明提供一种照明装置，其特征在于，包括：由从所述散斑去除光源输出的激光照射的空间光调制器，生成图像，所述空间光调制器具有设定用于产生图像的周期，所述周期为比通过光频调制器改变激光波长的时间长。

10. 发明授权

US07283302B2 Wavelength filter and wavelength monitor device 失效
标题翻译：波长滤波器和波长监测器
公开(公告)号：US07283302B2
公开(公告)日：2007-10-16
申请号：US10549325
申请日：2003-03-19
申请人： Masao Imaki , Yoshihito Hirano , Makoto Sato , Akihiro Adachi , Shinichi Takagi , Yasunori Nisimura
发明人： Masao Imaki , Yoshihito Hirano , Makoto Sato , Akihiro Adachi , Shinichi Takagi , Yasunori Nisimura
IPC分类号： G02B5/30
CPC分类号： G02B5/3083 , G01J9/02 , G01J2009/0257 , G02B7/008 , H01S5/02248 , H01S5/0687
摘要： A wavelength filter includes a solid material that is optically transparent and including a pair of planar surfaces substantially parallel to each other; and a supporting member that supports the solid material on a planar surface of the solid material other than the pair of planar surfaces, the supporting member having a rigidity higher than that of the solid material. The solid material is a birefringent material of which an optical axis makes a predetermined angle with respect to a normal to the pair of planar surfaces, and the wavelength filter selects light having a wavelength that is determined by an optical length between the pair of planar surfaces by resonating the light between the pair of planar surfaces.
摘要翻译：波长滤波器包括光学透明并且包括彼此大致平行的一对平面的固体材料; 以及支撑构件，其将所述固体材料支撑在除了所述一对平面之外的所述固体材料的平坦表面上，所述支撑构件的刚度高于所述固体材料的刚度。固体材料是双折射材料，其光轴相对于一对平面的法线形成预定角度，并且波长滤光器选择具有由一对平面之间的光学长度确定的波长的光通过使一对平面之间的光共振。

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