公开(公告)号：US20120279553A1

公开(公告)日：2012-11-08

申请号：US13518308

申请日：2010-12-22

申请人： Hiroaki Shigeta ,  Yuhji Yashiro ,  Yuhsuke Tsuda ,  Shintaro Miyanishi ,  Susumu Noda ,  Masayuki Fujita ,  Yoshinori Tanaka

发明人： Hiroaki Shigeta ,  Yuhji Yashiro ,  Yuhsuke Tsuda ,  Shintaro Miyanishi ,  Susumu Noda ,  Masayuki Fujita ,  Yoshinori Tanaka

IPC分类号： H01L31/052 ,  H01L31/0232

CPC分类号： H01L31/035227 ,  H01L31/0232 ,  H01L31/02327 ,  H01L31/035281 ,  H01L31/0392 ,  H01L31/03921 ,  H01L31/054 ,  H01L31/075 ,  Y02E10/52 ,  Y02E10/548

摘要： A solar cell (1) of the present invention includes a photoelectric conversion layer (2) and a photonic crystal provided inside the photoelectric conversion layer (2) in order to have a photonic band gap. The photonic crystal has defects (31) in order to provide a defect level in the photonic band gap. QV which is a Q value representing a magnitude of a resonance effect yielded by coupling between the photonic crystal and an outside is substantially equal to Qα which is a Q value representing a magnitude of a resonance effect yielded by a medium of the photoelectric conversion layer (2).

摘要翻译： 本发明的太阳能电池（1）包括光电转换层（2）和设置在光电转换层（2）内的光子晶体，以便具有光子带隙。 光子晶体具有缺陷（31），以便提供光子带隙中的缺陷水平。 QV是表示通过光子晶体与外部之间的耦合而产生的共振效应的大小的Q值，基本上等于作为表示由光电转换层的介质产生的共振效应的大小的Q值的Qα（ 2）。

公开(公告)号：US20120002692A1

公开(公告)日：2012-01-05

申请号：US13137693

申请日：2011-09-02

申请人： Susumu Noda ,  Eiji Miyai ,  Dai Ohnishi

发明人： Susumu Noda ,  Eiji Miyai ,  Dai Ohnishi

IPC分类号： H01S5/02 ,  H01L21/3065

CPC分类号： H01S5/105 ,  H01S5/0425 ,  H01S5/18308 ,  H01S5/18358 ,  H01S2301/18

摘要： The present invention intends to provide a surface-emitting laser light source using a two-dimensional photonic crystal in which the efficiency of extracting light in a direction perpendicular to the surface is high. In a laser light source provided with a two-dimensional photonic crystal layer created from a plate-shaped matrix body in which a large number of holes are periodically arranged and an active layer arranged on one side of the two-dimensional photonic crystal layer, the holes are created to be columnar with a predetermined cross-sectional shape such as a circular shape, and the main axis of each of the columnar holes is tilted to a surface of the matrix body. When provided with this two-dimensional photonic crystal layer, the surface-emitting laser source using a two-dimensional photonic crystal has a Q⊥ value (i.e. a Q value in a direction perpendicular to the surface) of several thousands, which is suitable for an oscillation of laser light, and the efficiency of extracting light is high in the direction perpendicular to the surface.

摘要翻译： 本发明旨在提供一种使用二维光子晶体的表面发射激光光源，其中在与表面垂直的方向上提取光的效率高。 在设置有由周期性排列大量孔的板状矩阵体形成的二维光子晶体层和配置在二维光子晶体层一侧的有源层的激光光源中， 产生具有预定横截面形状的柱状的孔，例如圆形，并且每个柱孔的主轴倾斜到矩阵体的表面。 当提供这种二维光子晶体层时，使用二维光子晶体的表面发射激光源具有几千个Q⊥值（即，垂直于表面的方向的Q值），其适用于 激光的振荡，并且在垂直于表面的方向上提取光的效率高。

公开(公告)号：US08009953B2

公开(公告)日：2011-08-30

申请号：US11885546

申请日：2006-03-03

申请人： Susumu Noda ,  Makoto Okano ,  Masahiro Imada ,  Shigeki Takahashi

发明人： Susumu Noda ,  Makoto Okano ,  Masahiro Imada ,  Shigeki Takahashi

IPC分类号： G02B6/10

CPC分类号： H01S5/10 ,  B82Y20/00 ,  G02B6/1225 ,  G02B6/136 ,  H01S5/105 ,  Y10T428/24331

摘要： An object of the present invention is to provide a three-dimensional photonic crystal which allows an internal formation of a defect structure with an arbitrary shape and size. Multiple holes extending to two different directions are formed obliquely to a base body surface in order to form a first crystal and a second crystal. Base body left between the holes are made to be rods. Moreover, a connection crystal layer is formed by a part of rods having a size different from that of the rods in the first crystal and the second crystal. The connection crystal layer is held between the first crystal and the second crystal and they are fused. In a three-dimensional photonic crystal thus obtained, the rod becomes a point defect. The shape and size of the point defect can be arbitrarily set in any directions within the connection crystal layer. The shape and size of the point defect can also be controlled by adjusting the thickness of the connection crystal layer.

摘要翻译： 本发明的目的是提供一种能够内部形成任意形状和尺寸的缺陷结构的三维光子晶体。 延伸到两个不同方向的多个孔相对于基体表面倾斜地形成，以便形成第一晶体和第二晶体。 留在孔之间的基体被制成棒。 此外，连接晶体层由具有与第一晶体和第二晶体中的棒的尺寸不同的尺寸的棒的一部分形成。 连接晶体层保持在第一晶体和第二晶体之间并且熔合。 在由此获得的三维光子晶体中，棒变成点缺陷。 点缺陷的形状和尺寸可以在连接晶体层内的任何方向任意设置。 也可以通过调整连接晶体层的厚度来控制点缺陷的形状和尺寸。

公开(公告)号：US07783139B2

公开(公告)日：2010-08-24

申请号：US11886502

申请日：2006-03-07

申请人： Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka ,  Seiichi Takayama

发明人： Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka ,  Seiichi Takayama

IPC分类号： G02B6/00

CPC分类号： B82Y20/00 ,  G02B6/1225 ,  G02B6/126 ,  G02B6/14

摘要： The present invention provides a polarized light mode converter which can be provided within a two-dimensional photonic crystal or can be smoothly connected to a two-dimensional photonic crystal. In a two-dimensional photonic crystal made of a slab-like main body provided with a plurality of different refractive index regions (for example, holes 22) arranged in a lattice in the main body, where the different refractive index regions have a refractive index different from that of the main body, a polarized light conversion waveguide 23 is formed which is comprised of defects of the different refractive index regions arranged linearly whose a cross-sectional shape is asymmetrical in a vertical and in a horizontal direction. The polarized light conversion waveguide 23 can be, for example, realized by providing, on a side of the waveguide, holes 221 and 222 extending in a direction oblique to a the main body surface. TE polarized light propagating through the polarized light conversion waveguide 23 is partially converted into TM polarized light due to the asymmetry of the cross-sectional shape of the waveguide. Since the polarized light mode converter is made of a two-dimensional photonic crystal, it can be provided within a two-dimensional photonic crystal or can be smoothly connected to a two-dimensional photonic crystal.

摘要翻译： 本发明提供一种可以设置在二维光子晶体内或者可以平滑地连接到二维光子晶体的偏振光模式转换器。 在由板状主体构成的二维光子晶体中，其具有在主体中以格子排列的多个不同的折射率区域（例如，孔22），其中不同的折射率区域具有折射率 与主体不同的是，形成偏振光转换波导23，该偏振光转换波导23由横截面形状在垂直方向和水平方向上不对称的直线布置的不同折射率区域的缺陷构成。 例如，偏振光转换波导23可以通过在波导侧设置沿着与主体表面倾斜的方向延伸的孔221和222来实现。 由于波导的横截面形状的不对称性，通过偏振光转换波导23传播的TE偏振光被部分地转换为TM偏振光。 由于偏振光模式转换器由二维光子晶体制成，所以它可以设置在二维光子晶体内，或者可以平滑地连接到二维光子晶体。

公开(公告)号：US07715668B2

公开(公告)日：2010-05-11

申请号：US12438491

申请日：2007-08-27

申请人： Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka

发明人： Susumu Noda ,  Takashi Asano ,  Yoshinori Tanaka

IPC分类号： G02B6/00 ,  G02B6/02

CPC分类号： G02B6/1225 ,  B82Y20/00 ,  G02B6/12007 ,  G02B6/126 ,  G02B2006/12147 ,  G02B2006/1215 ,  G02B2006/12164

摘要： The present invention is aimed at providing a two-dimensional photonic crystal wavelength multiplexer/demultiplexer capable of multiplexing and demultiplexing both TE and TM-polarized lights. In the wavelength multiplexer/demultiplexer, first and second resonators having the same resonance wavelength λr are provided between first and second waveguides and which are separately provided in a two-dimensional photonic crystal having a photonic band gap for the TE polarization. A first polarization converter for converting a TM-polarized light to a TE-polarized light is provided on the first waveguide 121 between the first and second resonators and. Similarly, a second polarization converter for converting a TE-polarized light to a TM-polarized light is provided on the second waveguide between the first and second resonators and. Among the light propagating through the first waveguide, the TE-polarized light with wavelength λr is introduced from the first resonator into the second waveguide, whereas the TM-polarized light is converted to a TE-polarized light by the first polarization converter and then introduced through the second resonator into the second waveguide.

摘要翻译： 本发明旨在提供一种能够对TE和TM偏振光进行多路复用和解复用的二维光子晶体波长多路复用器/解复用器。 在波长多路复用器/解复用器中，具有相同共振波长λr的第一和第二谐振器设置在第一和第二波导之间，并且分别设置在具有用于TE偏振的光子带隙的二维光子晶体中。 用于将TM偏振光转换为TE偏振光的第一偏振转换器设置在第一和第二谐振器之间的第一波导121上。 类似地，在第一和第二谐振器之间的第二波导上提供用于将TE偏振光转换为TM偏振光的第二偏振转换器。 在通过第一波导传播的光中，具有波长λr的TE偏振光从第一谐振器引入第二波导，而TM偏振光被第一偏振转换器转换成TE偏振光，然后引入 通过第二谐振器进入第二波导。

公开(公告)号：US07639720B2

公开(公告)日：2009-12-29

申请号：US12076939

申请日：2008-03-25

申请人： Susumu Noda ,  Jun-ichi Kashiwagi ,  Dai Ohnishi ,  Wataru Kunishi

发明人： Susumu Noda ,  Jun-ichi Kashiwagi ,  Dai Ohnishi ,  Wataru Kunishi

IPC分类号： H01S5/00 ,  H01S3/08

CPC分类号： H01S5/105 ,  B82Y20/00 ,  H01S5/028 ,  H01S5/0425 ,  H01S5/183 ,  H01S5/2027 ,  H01S5/34306

摘要： The two-dimensional photonic crystal surface emitting laser according to the present invention includes a semiconductor substrate, a main laser section and a reflection film. The main laser section includes a lower cladding layer, an active layer, a two-dimensional photonic crystal layer, an upper cladding layer and a contact layer, which are all deposited on the semiconductor substrate. The reflection film, which surrounds the entire side surfaces of the main laser section, is made of a thin titanium-gold film deposited by sputtering.

摘要翻译： 根据本发明的二维光子晶体表面发射激光器包括半导体衬底，主激光部分和反射膜。 主激光部分包括全部沉积在半导体衬底上的下包层，有源层，二维光子晶体层，上覆层和接触层。 围绕主激光部分的整个侧表面的反射膜由通过溅射沉积的薄钛金膜制成。

公开(公告)号：US20090279579A1

公开(公告)日：2009-11-12

申请号：US11991097

申请日：2006-08-28

申请人： Dai Ohnishi ,  Wataru Kunishi ,  Eiji Miyai ,  Susumu Noda

发明人： Dai Ohnishi ,  Wataru Kunishi ,  Eiji Miyai ,  Susumu Noda

IPC分类号： H01S5/183

CPC分类号： H01S5/105 ,  H01S5/0215 ,  H01S5/0224 ,  H01S5/024 ,  H01S5/0425 ,  H01S5/1021 ,  H01S5/1039 ,  H01S5/18308 ,  H01S5/18358 ,  H01S2301/18

摘要： The present invention provides a two-dimensional photonic crystal surface-emitting laser light source capable of producing a beam that is not accompanied by unnecessary side lobes. A window-shaped electrode 36 having a central window 361 devoid of the electrode material is provided on the surface of a device substrate 31 from which surface emission is extracted. A mount surface electrode 37 having an area smaller than that of the window-shaped electrode 36 including the window 361 is provided on a mount surface 38. The distance between the device substrate 31 and the active layer 32 is larger than that between the mount surface 38 and the active layer 32. When a voltage is applied between the electrodes, electric charges are injected into the active layer and emission is obtained. Then, a component of light having a specific wavelength is amplified by a two-dimensional photonic crystal 33, whereby a laser oscillation is produced. The laser light is extracted through the window 361 to the outside. Since the window-shaped electrode 36 does not block the emission of light, the emitted light never forms side lobes due to interference. The positioning of the active layer 32 close to the mount surface 38 significantly enhances the heat-radiating effect.

摘要翻译： 本发明提供能够产生不伴随不必要的旁瓣的光束的二维光子晶体表面发射激光光源。 具有没有电极材料的中心窗口361的窗形电极36设置在从其提取表面发射的器件衬底31的表面上。 具有小于包括窗口361的窗形电极36的面积的安装表面电极37设置在安装表面38上。器件基板31与有源层32之间的距离大于安装表面之间的距离 38和有源层32.当在电极之间施加电压时，将电荷注入到有源层中并获得发射。 然后，通过二维光子晶体33放大具有特定波长的光的分量，由此产生激光振荡。 激光通过窗口361提取到外部。 由于窗形电极36不阻挡光的发射，所以发射的光不会由于干扰而形成旁瓣。 有源层32靠近安装表面38的定位显着增强了散热效果。

公开(公告)号：US20090263094A1

公开(公告)日：2009-10-22

申请号：US12225185

申请日：2007-03-20

申请人： Susumu Noda ,  Takashi Asano ,  Hitoshi Kitagawa

发明人： Susumu Noda ,  Takashi Asano ,  Hitoshi Kitagawa

IPC分类号： G02B6/10

CPC分类号： G02B6/1225 ,  B82Y20/00 ,  G02B2006/12164

摘要： Holes 12 are created in a slab-shaped body 11. On the first surface 131 of the body 11, the holes 12 are arranged at the lattice points of a triangular lattice 141. On the second surface 132, they are arranged at the lattice points 122 located at positions corresponding to the gravity center of a triangular lattice 141. Three air columns 12A obliquely extend from each lattice point 121 to the nearest three lattice points 122. Similarly, three air columns 12A obliquely extend from each lattice point 122 to the nearest three lattice points 121. In this construction, a periodic structural unit 16 consisting of three holes is created within the body 11 and this unit has a C3v-symmetrical shape at any section 14 parallel to the body 11. Due to this symmetry and the obliquely extending form of the air column 12A, a complete PBG with a large width is obtained. In one embodiment, a broad complete PBG whose width equals 15% of its middle value is obtained.

摘要翻译： 孔12形成在板状体11中。在主体11的第一表面131上，孔12布置在三角形格子141的格子点处。在第二表面132上，它们被布置在格子点 122位于对应于三角形格子141的重心的位置。三个空气柱12A从每个格点121倾斜延伸到最近的三个格点122.类似地，三个空气柱12A从每个格子点122倾斜延伸到最近的 在这种结构中，在主体11内形成由三个孔组成的周期性结构单元16，该单元在与主体11平行的任何部分14处具有C3v对称的形状。由于该对称性和倾斜的 空气柱12A的延伸形式，获得了宽的宽的完整的PBG。 在一个实施例中，获得宽度等于其中间值的15％的宽整个PBG。

公开(公告)号：US20090175572A1

公开(公告)日：2009-07-09

申请号：US10584942

申请日：2005-03-24

申请人： Susumu Noda ,  Takashi Asano ,  Seiichi Takayama

发明人： Susumu Noda ,  Takashi Asano ,  Seiichi Takayama

IPC分类号： G02B6/12

CPC分类号： B82Y20/00 ,  G02B6/12004 ,  G02B6/1225

摘要： The present invention has been made for providing a photonic crystal capable of multiplexing or demultiplexing light within a wavelength band having a certain width. It includes a slab-shaped body 21 provided with plural forbidden band zones 211 and 212, and holes 221 and 222 having different sizes are arranged in the forbidden band zones with different cycles, respectively. Also formed are a trunk waveguide 24 extending along the direction inclined by +30 degrees from a perpendicular of the boundary 23 between the forbidden-band zones 211 and 212, and a branch waveguide 25 extending along the direction inclined by −30 degrees. A ray of light within the multiplexed/demultiplexed wavelength band, which is excluded from the transmission wavelength band of the trunk waveguide 24 in the forbidden band zone 212 and included in the transmission wavelength band of the trunk waveguide 24 in the forbidden band zone 211, is reflected by the boundary 23 and thereby demultiplexed from the trunk waveguide 24 into the branch waveguide 25. Thus, all the rays of light whose wavelengths are within the multiplexed/demultiplexed wavelength band having a certain width are demultiplexed into the branch waveguide 25. Therefore, even if the wavelength of the optical signal is deviated due to some error, the light can be demultiplexed. This is also true for the multiplexing operation.

摘要翻译： 本发明是为了提供能够在具有一定宽度的波长带内复用或分离光的光子晶体。 它包括设置有多个禁带区211和212的板状主体21，并且具有不同尺寸的孔221和222分别布置在不同周期的禁带区中。 还形成有从沿禁带区211和212之间的边界23的垂直方向倾斜+30度的方向延伸的主干波导24和沿着倾斜-30度的方向延伸的分支波导25。 在禁带区域212中被包含在主干波导24的传输波长带中的禁带区域211中从干线波导24的传输波长带排除的复用/解复用波长带内的光线， 由边界23反射，从而从主干波导24分离成分支波导25.因此，波长在具有一定宽度的复用/解复用波长带内的所有光线被解复用到分支波导25中。因此 即使光信号的波长由于一些误差而偏离，也可以将光解复用。 这对于多路复用操作也是如此。

公开(公告)号：US20090003397A1

公开(公告)日：2009-01-01

申请号：US12204830

申请日：2008-09-05

申请人： Atsushi Sugitatsu ,  Susumu Noda

发明人： Atsushi Sugitatsu ,  Susumu Noda

IPC分类号： H01S5/062

CPC分类号： H01S5/0265 ,  B82Y20/00 ,  H01S3/10076 ,  H01S5/101 ,  H01S5/34306 ,  H01S5/50 ,  H01S5/5045

摘要： In an optical device, a slab layer includes an active layer sandwiched between cladding layers. The slab layer has a periodic refractive index profile structure in a two-dimensional plane, as a two-dimensional slab photonic crystal structure, and a linear defect region serving as a waveguide in the periodic refractive index profile structure. Regions having different widths of the waveguides, as segments of the waveguide, are connected in series.

摘要翻译： 在光学装置中，平板层包括夹在包层之间的有源层。 板状层在二维平面中具有周期性折射率分布结构，作为二维平板光子晶体结构，以及在周期性折射率分布结构中用作波导的线性缺陷区域。 作为波导段的波导宽度不同的区域串联连接。