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1. 发明授权

US06925103B2 Gain-coupled DFB laser diode 有权
标题翻译：增益耦合DFB激光二极管
公开(公告)号：US06925103B2
公开(公告)日：2005-08-02
申请号：US10282230
申请日：2002-10-29
申请人： Tsutomu Ishikawa , Hirohiko Kobayashi , Norihiko Sekine , Hajime Shoij
发明人： Tsutomu Ishikawa , Hirohiko Kobayashi , Norihiko Sekine , Hajime Shoij
IPC分类号： H01S5/10 , H01S5/12 , H01S5/223 , H01S5/34 , H01S5/343 , H01S5/187
CPC分类号： B82Y20/00 , H01S5/106 , H01S5/1228 , H01S5/223 , H01S5/3425
摘要： A gain-coupled DFB laser diode includes a multiple quantum well active layer and a pair of cladding layers sandwiching the multiple quantum well active layer vertically, wherein the multiple quantum well active layer includes a plurality of gain regions aligned in a direction of propagation of a laser beam and repeated periodically, each of the gain regions having a multiple quantum well structure, and a buried layer fills a gap between a pair of adjacent gain regions, wherein the buried layer includes a plurality of high-refractive index layers and a plurality of low-refractive index layers, each of the high-refractive index layers is formed of a first semiconductor material having a first bandgap, while each of the low-refractive index layers is formed of a second semiconductor material having a second, larger bandgap.
摘要翻译：增益耦合DFB激光二极管包括多量子阱有源层和垂直夹着多量子阱活性层的一对包覆层，其中多量子阱活性层包括沿着传播方向对齐的多个增益区域激光束并且周期性重复，每个增益区域具有多量子阱结构，并且掩埋层填充一对相邻增益区域之间的间隙，其中所述掩埋层包括多个高折射率层和多个低折射率层，每个高折射率层由具有第一带隙的第一半导体材料形成，而每个低折射率层由具有第二较大带隙的第二半导体材料形成。

2. 发明授权

US07106772B2 Distributed feedback semiconductor laser 有权
标题翻译：分布式反馈半导体激光器
公开(公告)号：US07106772B2
公开(公告)日：2006-09-12
申请号：US10747170
申请日：2003-12-30
申请人： Norihiko Sekine
发明人： Norihiko Sekine
IPC分类号： H01S5/00
CPC分类号： B82Y20/00 , H01S5/028 , H01S5/06206 , H01S5/12 , H01S5/2226 , H01S5/2275 , H01S5/3211 , H01S5/3434 , H01S5/34373
摘要： A tuning layer is disposed spaced by some distance apart from an active layer in a thickness direction, the tuning layer having a transition wavelength shorter than a wavelength of light radiated from the active layer. A diffraction grating layer is disposed between the active layer and tuning layer, a refractive index of the diffraction grating layer being periodically changed along an optical resonator direction. A first electrode supplies the active layer with current. A second electrode supplies the tuning layer with current independently from the current to be supplied to the active layer. A TTG-DFB laser is provided which can maintain a proper coupling coefficient and has characteristics suitable for application to communication light sources.
摘要翻译：调谐层在厚度方向上与有源层隔开一段距离设置，调谐层具有比从有源层辐射的光的波长短的过渡波长。衍射光栅层设置在有源层和调谐层之间，衍射光栅层的折射率沿着光学谐振器方向周期性地改变。第一电极向有源层提供电流。第二电极向调谐层提供独立于待提供给有源层的电流的电流。提供一种TTG-DFB激光器，可以保持适当的耦合系数，并具有适用于通信光源的特性。

3. 发明申请

US20130076912A1 REFLECTIVE IMAGING DEVICE AND IMAGE ACQUISITION METHOD 有权
标题翻译：反射成像装置和图像采集方法
公开(公告)号：US20130076912A1
公开(公告)日：2013-03-28
申请号：US13701701
申请日：2011-05-20
申请人： Naoki Oda , Yuichi Ogawa , Iwao Hosako , Norihiko Sekine
发明人： Naoki Oda , Yuichi Ogawa , Iwao Hosako , Norihiko Sekine
IPC分类号： H04N5/33
CPC分类号： H04N5/33 , G01N21/3581
摘要： In order to generate a two-dimensional image of a sample in a short time using THz waves, provided is a reflective imaging device including a sample holder, a THz wave light source, a THz wave camera, a rotation mechanism for rotating the holder and the camera, and a processing unit. A sample unit includes an incidence member, a sample, and a reflection member. The sample includes a first region of only a membrane and a second region including a biopolymer. The camera detects, with regard to respective incident angles, a THz wave in which interference occurs between a component reflected at an interface between the incidence member and the sample and a component reflected at an interface between the sample and the reflection member, of each portion of the sample unit, and outputs a signal. The processing unit specifies an incident angle at which a signal of a first THz wave that interferes in the first region is relatively small and a signal of a second THz that interferes in the second region is relatively large, and generates a two-dimensional image of the sample based on the signal from the camera with regard to the specified incident angle.
摘要翻译：为了使用太赫兹波在短时间内产生样本的二维图像，提供了一种反射成像装置，其包括样本保持器，太赫兹波光源，太赫兹波相机，用于旋转支架的旋转机构和相机和处理单元。样品单元包括入射构件，样品和反射构件。样品包括只有膜的第一区域和包括生物聚合物的第二区域。摄像机检测相对于入射角度的THz波，其中在入射构件和样品之间的界面处反射的分量与在样品与反射构件之间的界面处反射的分量之间发生干涉，并输出信号。处理单元指定在第一区域中干扰的第一THz波的信号相对较小并且在第二区域中干扰的第二THz的信号相对较大的入射角，并且生成二维图像该样本基于来自摄像机的信号对于指定的入射角度。

4. 发明授权

US06853008B2 Semiconductor device and manufacturing method thereof 失效
标题翻译：半导体装置及其制造方法
公开(公告)号：US06853008B2
公开(公告)日：2005-02-08
申请号：US09963485
申请日：2001-09-27
申请人： Norihiko Sekine
发明人： Norihiko Sekine
IPC分类号： H01L21/02 , H01L21/20 , H01L29/205 , H01S5/02 , H01S5/183 , H01L29/04 , H01L31/036
CPC分类号： H01S5/1838 , H01L21/2007 , H01L29/205 , H01L33/0079 , H01S5/0216 , H01S5/18369 , H01S5/18377
摘要： A semiconductor device has a structure in which a GaAs substrate and an InP substrate, different in lattice constant, are bonded to each other. An amorphous layer made of constituent atoms of the GaAs and InP substrates is formed at the interface between the GaAs and InP substrates. Forming the amorphous layer makes it possible to prevent a reduction of light-emitting efficiency caused by a thermal stress at the interface, even when a light-emitting layer by laser oscillation is formed near the interface. Besides, a linear current-voltage characteristic can be obtained at the interface.
摘要翻译：半导体器件具有其中晶格常数不同的GaAs衬底和InP衬底彼此结合的结构。在GaAs和InP衬底之间的界面处形成由GaAs和InP衬底的组成原子构成的非晶层。通过形成非晶层，即使在界面附近形成激光振荡的发光层，也能够防止由界面处的热应力引起的发光效率的降低。此外，可以在界面处获得线性电流 - 电压特性。

5. 发明授权

US06734464B2 Hetero-junction laser diode 有权
标题翻译：异质结激光二极管
公开(公告)号：US06734464B2
公开(公告)日：2004-05-11
申请号：US10280800
申请日：2002-10-28
申请人： Norihiko Sekine
发明人： Norihiko Sekine
IPC分类号： H01L3300
CPC分类号： B82Y20/00 , H01S5/1228 , H01S5/322 , H01S5/3422
摘要： A laser diode comprises a first cladding layer having a first conductivity, a second cladding layer having a second conductivity, an active layer located between the first cladding layer and the second cladding layer and extending from one end surface to the other end surface, a first electrode configured to inject a carrier with a first polarity into the active layer via the first cladding layer, and a second electrode configured to inject a carrier with a second polarity into the active layer via the second cladding layer. The active layer comprises a first active region and a second active region, which are arranged alternately and periodically from one end surface to the other end surface in the direction of light propagation, and the first active region and the second active region define type-II hetero junction between them.
摘要翻译：激光二极管包括具有第一导电性的第一包层，具有第二导电性的第二包层，位于第一包层和第二包层之间并从一个端面延伸到另一端表面的有源层，第一包层电极，被配置为经由所述第一包层将具有第一极性的载体注入所述有源层;以及第二电极，被配置为经由所述第二包层将具有第二极性的载体注入所述有源层。所述有源层包括第一有源区和第二有源区，所述第一有源区和第二有源区在光传播方向上从一个端表面交替地周期性地布置到另一个端面，并且所述第一有源区和所述第二有源区定义了II型它们之间的异质结。

6. 发明授权

US09071776B2 Reflective imaging device and image acquisition method 有权
标题翻译：反射成像装置和图像采集方法
公开(公告)号：US09071776B2
公开(公告)日：2015-06-30
申请号：US13701701
申请日：2011-05-20
申请人： Naoki Oda , Yuichi Ogawa , Iwao Hosako , Norihiko Sekine
发明人： Naoki Oda , Yuichi Ogawa , Iwao Hosako , Norihiko Sekine
IPC分类号： H04N5/33 , G01N21/3581
CPC分类号： H04N5/33 , G01N21/3581
摘要： In order to generate a two-dimensional image of a sample in a short time using THz waves, provided is a reflective imaging device including a sample holder, a THz wave light source, a THz wave camera, a rotation mechanism for rotating the holder and the camera, and a processing unit. A sample unit includes an incidence member, a sample, and a reflection member. The sample includes a first region of only a membrane and a second region including a biopolymer. The camera detects, with regard to respective incident angles, a THz wave in which interference occurs between a component reflected at an interface between the incidence member and the sample and a component reflected at an interface between the sample and the reflection member, of each portion of the sample unit, and outputs a signal. The processing unit specifies an incident angle at which a signal of a first THz wave that interferes in the first region is relatively small and a signal of a second THz that interferes in the second region is relatively large, and generates a two-dimensional image of the sample based on the signal from the camera with regard to the specified incident angle.
摘要翻译：为了使用太赫兹波在短时间内产生样本的二维图像，提供了一种反射成像装置，其包括样本保持器，太赫兹波光源，太赫兹波相机，用于旋转支架的旋转机构和相机和处理单元。样品单元包括入射构件，样品和反射构件。样品包括只有膜的第一区域和包括生物聚合物的第二区域。摄像机检测相对于入射角度的THz波，其中在入射构件和样品之间的界面处反射的分量与在样品与反射构件之间的界面处反射的分量之间发生干涉，并输出信号。处理单元指定在第一区域中干扰的第一THz波的信号相对较小并且在第二区域中干扰的第二THz的信号相对较大的入射角，并且生成二维图像该样本基于来自摄像机的信号对于指定的入射角度。

7. 发明授权

US07112827B2 Tunable wavelength laser 失效
标题翻译：可调波长激光
公开(公告)号：US07112827B2
公开(公告)日：2006-09-26
申请号：US10690469
申请日：2003-10-22
申请人： Akinori Hayakawa , Yoshihiro Sato , Ken Morito , Norihiko Sekine
发明人： Akinori Hayakawa , Yoshihiro Sato , Ken Morito , Norihiko Sekine
IPC分类号： H01L29/74 , H01L31/111 , H01S3/10 , H01S3/17
CPC分类号： H01S5/0607 , H01S5/026 , H01S5/0265 , H01S5/028 , H01S5/042 , H01S5/0425 , H01S5/06206 , H01S5/06258 , H01S5/1014 , H01S5/2206 , H01S5/227 , H01S5/32333 , H01S5/4012 , H01S5/4087 , H01S2301/173
摘要： A light oscillation part including an active layer for generating light by current injection, a tuning layer with an intermediate layer formed between the active layer and the tuning layer, for varying an oscillation wavelength by current injection and a diffraction grating formed near the active layer and the tuning layer, and a light amplification part including an active layer for amplifying light by current injection are formed on a semiconductor substrate. Light oscillation elements having wide wavelength variation ranges and the light amplification are integrated on a semiconductor substrate, whereby wide wavelength variation ranges can be obtained and the output light can be much increased.
摘要翻译：一种光振荡部分，包括通过电流注入产生光的有源层，在有源层和调谐层之间形成中间层的调谐层，用于通过电流注入改变振荡波长，以及在有源层附近形成衍射光栅; 调谐层和包括用于通过电流注入来放大光的有源层的光放大部分形成在半导体衬底上。具有宽波长变化范围的光振荡元件和光放大集成在半导体衬底上，由此可以获得宽的波长变化范围，并且输出光可以大大增加。

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