公开(公告)号：US09048623B2

公开(公告)日：2015-06-02

申请号：US13581743

申请日：2011-03-01

申请人： Susumu Noda ,  Kyoko Kitamura ,  Yoshitaka Kurosaka ,  Kyosuke Sakai

发明人： Susumu Noda ,  Kyoko Kitamura ,  Yoshitaka Kurosaka ,  Kyosuke Sakai

IPC分类号： H01S5/18 ,  H01S5/10 ,  B82Y20/00 ,  H01S5/187 ,  H01S5/026 ,  H01S5/343

CPC分类号： H01S5/105 ,  B82Y20/00 ,  H01S5/0267 ,  H01S5/1071 ,  H01S5/187 ,  H01S5/34333 ,  H01S2301/14 ,  H01S2301/203

摘要： A photonic crystal laser capable of producing a radially-polarized halo-shaped laser beam having a smaller width than conventional beams includes: an active layer; a ring-shaped photonic crystal including a plate-shaped base body on one side of the active layer, the base body having a number of modified refractive index areas of the same shape, the modified refractive index areas having a refractive index different from the base body and periodically arranged in the circumferential direction of a ring, and each of the modified refractive index areas being asymmetrically shaped with respect to an axis extending through the center of the modified refractive index area in the radial direction of the ring; a first and second electrode facing each other across the active layer and the ring-shaped photonic crystal; and a window provided in the second electrode capable of allowing passage of a laser light generated from the ring-shaped photonic crystal.

摘要翻译： 能够产生具有比常规光束更小的宽度的径向偏振的卤素状激光束的光子晶体激光器包括：有源层; 在有源层的一侧包括板状基体的环状光子晶体，所述基体具有多个相同形状的改性折射率区域，所述改性折射率区域的折射率不同于所述基底 并且每个修改的折射率区域相对于在环的径向方向上延伸穿过修改的折射率区域的中心的轴线不对称地成形; 第一和第二电极，跨越有源层和环形光子晶体彼此面对; 以及设置在第二电极中的能够允许从环形光子晶体产生的激光通过的窗口。

公开(公告)号：US20130105927A1

公开(公告)日：2013-05-02

申请号：US13520495

申请日：2010-12-22

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

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

IPC分类号： H01L31/0232

CPC分类号： H01L31/0232 ,  H01L31/0248 ,  H01L31/04 ,  H01L31/0547 ,  Y02E10/52

摘要： A photoelectric conversion element (1) of the present invention includes: a photoelectric conversion layer (2); and a photonic crystal provided inside the photoelectric conversion layer (2) to provide a photonic band gap, the photonic crystal being designed such that nanorods (30) whose refraction index is smaller than that of a medium of the photoelectric conversion layer (2) are provided periodically inside the photoelectric conversion layer (2), and there are provided defects (31) to provide a defect level in the photonic band gap, when a wavelength of a resonance peak corresponding to the defect level is λ, the nanorods (30) are provided two-dimensionally with a pitch of not less than λ/7 and not more than λ/2, and a coefficient κV indicative of strength of coupling between the photonic crystal and the outside is substantially equal to a coefficient α of absorption of light by the photoelectric conversion layer (2).

摘要翻译： 本发明的光电转换元件（1）包括：光电转换层（2）; 和设置在光电转换层（2）内部以提供光子带隙的光子晶体，所述光子晶体被设计为使得其折射率小于光电转换层（2）的介质的折射率的纳米棒（30）是 周期性地设置在光电转换层（2）内，并且当与缺陷水平相对应的谐振峰值的波长为λ时，存在提供光子带隙中的缺陷水平的缺陷（31），纳米棒（30） 以不小于λ/ 7且不大于λ/ 2的间距二维地提供，并且指示光子晶体和外部之间的耦合强度的系数kappaV基本上等于光吸收系数α 通过光电转换层（2）。

公开(公告)号：US08300672B2

公开(公告)日：2012-10-30

申请号：US13061337

申请日：2009-08-18

申请人： Susumu Noda ,  Seita Iwahashi ,  Yoshitaka Kurosaka ,  Kyosuke Sakai ,  Eiji Miyai ,  Dai Ohnishi ,  Wataru Kunishi

发明人： Susumu Noda ,  Seita Iwahashi ,  Yoshitaka Kurosaka ,  Kyosuke Sakai ,  Eiji Miyai ,  Dai Ohnishi ,  Wataru Kunishi

IPC分类号： H01S5/00

CPC分类号： H01S5/18 ,  H01S5/105 ,  H01S5/187

摘要： A two-dimensional photonic crystal laser light is provided. The two-dimensional photonic crystal laser includes a two-dimensional photonic crystal made of a plate-shaped member provided with a periodic arrangement of identically-shaped modified refractive index areas having a refractive index different from that of the plate-shaped member; and an active layer provided on one side of the two-dimensional photonic crystal. The modified refractive index areas are arranged at lattice points of a lattice with a same period at least in two directions; each modified refractive index area is shaped so that a feedback strength is different with respect to directions of two primitive lattice vectors of the lattice; the two-dimensional photonic crystal has a periodic structure of a supercell, which contains a plurality of lattice points; and the sum of the feedback strengths by all modified refractive index areas in the supercell is identical in each direction of the two primitive lattice vectors.

摘要翻译： 提供二维光子晶体激光。 二维光子晶体激光器包括由板状构件制成的二维光子晶体，该二维光子晶体具有折射率不同于板状构件的相同形状的改性折射率区域的周期性布置; 以及设置在二维光子晶体的一侧上的有源层。 修饰的折射率区域至少在两个方向上布置在具有相同周期的格子的格子点处; 每个修改的折射率区域被成形为使得反馈强度相对于晶格的两个原始晶格矢量的方向是不同的; 二维光子晶体具有包含多个格点的超单元的周期性结构; 并且超级单元中的所有修改的折射率区域的反馈强度的总和在两个原始格子向量的每个方向上是相同的。

公开(公告)号：US20110188526A1

公开(公告)日：2011-08-04

申请号：US13061337

申请日：2009-08-18

申请人： Susumu Noda ,  Seita Iwahashi ,  Yoshitaka Kurosaka ,  Kyosuke Sakai ,  Eiji Miyai ,  Dai Ohnishi ,  Wataru Kunishi

发明人： Susumu Noda ,  Seita Iwahashi ,  Yoshitaka Kurosaka ,  Kyosuke Sakai ,  Eiji Miyai ,  Dai Ohnishi ,  Wataru Kunishi

IPC分类号： H01S3/16

CPC分类号： H01S5/18 ,  H01S5/105 ,  H01S5/187

摘要： A two-dimensional photonic crystal laser light is provided. The two-dimensional photonic crystal laser includes a two-dimensional photonic crystal made of a plate-shaped member provided with a periodic arrangement of identically-shaped modified refractive index areas having a refractive index different from that of the plate-shaped member; and an active layer provided on one side of the two-dimensional photonic crystal. The modified refractive index areas are arranged at lattice points of a lattice with a same period at least in two directions; each modified refractive index area is shaped so that a feedback strength is different with respect to directions of two primitive lattice vectors of the lattice; the two-dimensional photonic crystal has a periodic structure of a supercell, which contains a plurality of lattice points; and the sum of the feedback strengths by all modified refractive index areas in the supercell is identical in each direction of the two primitive lattice vectors.

摘要翻译： 提供二维光子晶体激光。 二维光子晶体激光器包括由板状构件制成的二维光子晶体，该二维光子晶体具有折射率不同于板状构件的相同形状的改性折射率区域的周期性布置; 以及设置在二维光子晶体的一侧上的有源层。 修饰的折射率区域至少在两个方向上布置在具有相同周期的格子的格子点处; 每个修改的折射率区域被成形为使得反馈强度相对于晶格的两个原始晶格矢量的方向是不同的; 二维光子晶体具有包含多个格点的超单元的周期性结构; 并且超级单元中的所有修改的折射率区域的反馈强度的总和在两个原始格子向量的每个方向上是相同的。

公开(公告)号：US07973924B2

公开(公告)日：2011-07-05

申请号：US10593646

申请日：2005-03-23

申请人： Susumu Noda ,  Takashi Asano ,  Hitomichi Takano

发明人： Susumu Noda ,  Takashi Asano ,  Hitomichi Takano

IPC分类号： G01J3/00

CPC分类号： G02B6/1225 ,  B82Y20/00 ,  G01N21/3504 ,  G01N21/774 ,  G01N21/7746 ,  G01N2021/7776

摘要： A highly sensitive and compactable target substance sensor for detection of the target substance using a photonic crystal and a method thereof. The sensor includes an electromagnetic wave source of supplying an electromagnetic wave, a photonic sensor element, and a detector. The photonic sensor element has photonic crystalline structure and is configured to include a sensor waveguide for introducing the electromagnetic wave, and a sensing resonator electromagnetically coupled to the sensor waveguide for resonating the electromagnetic wave at specific wavelength. The sensing resonator is exposed to an atmosphere including the target substance so as to vary a characteristic of the electromagnetic wave emitted from the sensing resonator. The detector is configured to receive the electromagnetic wave emitted from the sensing resonator to recognize an intensity variation of the electromagnetic wave and issue a signal indicative of a characteristic of the target substance.

摘要翻译： 一种用于使用光子晶体检测目标物质的高灵敏度和可压实的目标物质传感器及其方法。 传感器包括提供电磁波的电磁波源，光子传感器元件和检测器。 光子传感器元件具有光子晶体结构，并且被配置为包括用于引入电磁波的传感器波导和电磁耦合到传感器波导的感测谐振器，以谐振特定波长的电磁波。 感测谐振器暴露于包括目标物质的气氛，以便改变从感测谐振器发射的电磁波的特性。 检测器被配置为接收从感测谐振器发射的电磁波，以识别电磁波的强度变化并发出指示目标物质的特性的信号。

公开(公告)号：US07912335B2

公开(公告)日：2011-03-22

申请号：US11794192

申请日：2005-12-28

申请人： Susumu Noda ,  Takashi Asano ,  Seiichi Takayama

发明人： Susumu Noda ,  Takashi Asano ,  Seiichi Takayama

IPC分类号： G02B6/10

CPC分类号： B82Y20/00 ,  G02B6/12007 ,  G02B6/1225

摘要： An object of the present invention is to provide a two-dimensional photonic crystal in which conditions for both the TE-polarized light and the TM-polarized light can be easily satisfied. A body includes a first area having a triangular lattice pattern arrangement of a circular hole and a second area having a triangular lattice pattern arrangement of an equilateral triangular holes. Therefore, the TE-PBG which is a photonic band gap (PBG) for the TE-polarized light is created in the first area, and the TM-PBG which is a PBG for the TM-polarized light is created in the second area. Parameters such as the period and size of the holes can be independently set for the first area and the second area, so that an energy region common to the TE-PBG and the TM-PBG (i.e. absolute PBG) can be made larger and easily created. Forming a waveguide and resonators and or the like corresponding to an energy within the absolute PBG allows formation of a polarized light multiplexer/demultiplexer and a frequency (wavelength) multiplexer/demultiplexer without depending on polarized light or the like.

摘要翻译： 本发明的目的是提供二维光子晶体，其中可以容易地满足TE偏振光和TM偏振光两者的条件。 主体包括具有圆形孔的三角形格子图案布置的第一区域和具有等边三角形孔的三角形格子图案布置的第二区域。 因此，在第一区域中产生作为TE偏振光的光子带隙（PBG）的TE-PBG，在第二区域中产生作为TM偏振光的PBG的TM-PBG。 诸如孔的周期和尺寸的参数可以独立地设置为第一区域和第二区域，使得TE-PBG和TM-PBG（即绝对PBG）共有的能量区域可以变得更大和容易 创建。 对应于绝对PBG内的能量的波导和谐振器等形成偏振光多路复用器/解复用器和频率（波长）复用器/解复用器，而不依赖于偏振光等。

公开(公告)号：US20090175304A1

公开(公告)日：2009-07-09

申请号：US12225530

申请日：2007-03-30

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

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

IPC分类号： H01S5/00

CPC分类号： H01S5/183 ,  H01S5/105

摘要： A two-dimensional photonic crystal surface emitting laser light source according to the present invention includes a two-dimensional photonic crystal made of a plate-shaped body material provided with a periodic arrangement of identically-shaped holes 242A and an active layer provided on one side of the two-dimensional photonic crystal. The hole 242A is not located on a first half-line 251 extending from the gravity center G1 of the hole in a direction within the plane of the two-dimensional photonic crystal, while the hole 242A is located at least on a portion of a second half-line 252 extending from the gravity center G1 in the direction opposite to the first half-line 251. Injecting electric charges into the active layer generates light, which creates an electric field that encircles the gravity center G1 within the two-dimensional photonic crystal. For a given point on the second half-line 252 at which the hole 242A is located, there is no hole at a point that is symmetrical to the aforementioned point with respect to the gravity center G1, so that there is a difference in the refractive index between the two points. Thus, the electric field vectors at the two points are prevented from canceling each other due to destructive interference, so that the resultant laser light is stronger than conventional examples.

摘要翻译： 根据本发明的二维光子晶体表面发射激光光源包括由板状主体材料制成的二维光子晶体，该二维光子晶体设置有相同形状的孔242A和设置在一侧的活性层的周期性排列 的二维光子晶体。 孔242A不位于从二维光子晶体的平面内的孔的重心G1延伸的第一半线251上，而孔242A至少位于二次光子晶体的一部分上 从重心G1向与第一半线251相反的方向延伸的半线252.向有源层注入电荷产生光，其产生围绕二维光子晶体内的重心G1的电场 。 对于孔242A所在的第二半线252上的给定点，在相对于重心G1与上述点对称的点处没有孔，使得折射率 两点之间的指标。 因此，由于相消干涉，防止两点处的电场矢量彼此抵消，使得所得到的激光比传统例子更强。

公开(公告)号：US20090162008A1

公开(公告)日：2009-06-25

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： G02B6/12

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 and 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，在第一和第二波导之间提供具有相同谐振波长的第一和第二谐振器，并且分别设置在具有用于TE极化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，从第一谐振器引入具有波长兰伯的TE偏振光到第二波导，而通过第一偏振转换器将TM偏振光转换成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：US20090135871A1

公开(公告)日：2009-05-28

申请号：US12225169

申请日：2007-03-20

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

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

IPC分类号： H01S5/18

CPC分类号： H01S5/18355 ,  G11B7/127 ,  H01S5/026 ,  H01S5/105

摘要： An objective of the present invention is to provide a laser capable of producing a radially polarized laser beam with an annular cross section. A laser oscillator 60 including an active layer 53 and two-dimensional photonic crystal 55 with circular holes 552 arranged in a square lattice pattern is provided between two electrodes 571 and 572. A first polarization control layer 581, which functions as a half-wave plate, and a second polarization control layer 582, which functions as a half-wave plate with a fast axis 592 extending at an angle of 45° to that of the first polarization control layer 581, are located on the laser oscillator 60. When a voltage is applied between the electrodes, a circumferentially polarized annular laser beam is emitted from the laser oscillator 60. When passing through the first polarization control layer 581 and the second polarization control layer 582, the laser beam is converted to a radially polarized beam. The resultant laser beam can be converged by a focusing lens to achieve a diameter smaller than the diffraction limit. Such a narrow beam is suitable for an optical pickup or many other devices.

摘要翻译： 本发明的目的是提供一种能够制造具有环形横截面的径向偏振激光束的激光器。 在两个电极571和572之间设置包括活性层53和具有以正方形格子图案排列的圆形孔552的二维光子晶体55的激光振荡器60.第一偏振控制层581用作半波片 ，并且作为半波片的第二偏光控制层582位于激光振荡器60上，该半波片具有与第一偏振控制层581成45°角延伸的快轴592。 施加在电极之间，从激光振荡器60发射周向极化的环形激光束。当通过第一偏振控制层581和第二偏振控制层582时，将激光束转换成径向偏振光束。 所得到的激光束可以被聚焦透镜会聚，以获得小于衍射极限的直径。 这种窄光束适用于光学拾取器或许多其他装置。

公开(公告)号：US20090135869A1

公开(公告)日：2009-05-28

申请号：US11991403

申请日：2006-09-05

申请人： Susumu Noda ,  Eiji Miyai ,  Dai Ohnishi

发明人： Susumu Noda ,  Eiji Miyai ,  Dai Ohnishi

IPC分类号： H01S3/16 ,  H01L21/02

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。