公开(公告)号：US07978745B2

公开(公告)日：2011-07-12

申请号：US12164449

申请日：2008-06-30

申请人： Susumu Noda ,  Mitsuru Yokoyama ,  Takuji Hatano

发明人： Susumu Noda ,  Mitsuru Yokoyama ,  Takuji Hatano

IPC分类号： H01S5/18 ,  H01S5/12

CPC分类号： H01S5/105 ,  H01S5/183

摘要： Two-dimensional photonic crystal surface-emitting laser comprising a two-dimensional photonic crystal, having media different in refractive index arrayed in a two-dimensional cycle, disposed in the vicinity of an active layer that emits light by the injection of carriers, wherein the two-dimensional photonic crystal consists of square lattices having equal lattice constants in perpendicular directions, and a basic lattice consisting of a square with one medium as a vertex has an asymmetric refractive index distribution with respect to either one of the two diagonals of the basic lattice to thereby emit light in a constant polarizing direction.

摘要翻译： 二维光子晶体表面发射激光器，其包括二维光子晶体，其具有以二维周期排列的折射率不同的介质，设置在通过注入载流子而发光的有源层附近，其中， 二维光子晶体由在垂直方向上具有相等晶格常数的方形晶格组成，并且由具有一个介质作为顶点的正方形组成的基本晶格相对于基本晶格的两个对角线中的任一个具有不对称折射率分布 从而以恒定的偏振方向发光。

公开(公告)号：US07853111B2

公开(公告)日：2010-12-14

申请号：US10591299

申请日：2005-03-04

申请人： Susumu Noda ,  Takashi Asano ,  Seiichi Takayama ,  Hitoshi Kitagawa

发明人： Susumu Noda ,  Takashi Asano ,  Seiichi Takayama ,  Hitoshi Kitagawa

IPC分类号： G02B6/10

CPC分类号： B82Y20/00 ,  G02B6/1225 ,  G02B6/29325 ,  G02B6/2938

摘要： The present invention provides a two-dimensional photonic crystal in which an absolute photonic band gap (PBG), i.e. a photonic band gap that is effective for both the TE-polarized light and the TM-polarized light within a predetermined wavelength range, is created with an adequate bandwidth. The body 21 is provided with holes 22 arranged in a triangular lattice pattern, where the basic shape of the hole is an equilateral triangle. This shaping and arranging of the holes creates an absolute PBG. Each corner of the equilateral triangle is cut along an arc to leave an adequate distance between the neighboring holes (i.e. an adequate width of the connecting portion of the body). This design makes it possible to enlarge each hole 22 while ensuring an adequate strength of the two-dimensional photonic crystal. This construction creates an absolute PBG having a large width.

摘要翻译： 本发明提供一种二维光子晶体，其中产生绝对光子带隙（PBG），即对预定波长范围内的TE偏振光和TM偏振光有效的光子带隙， 具有足够的带宽。 主体21设置有以三角形格子图案布置的孔22，其中孔的基本形状为等边三角形。 这种孔的形成和排列创建了绝对的PBG。 等边三角形的每个角都沿弧线切割，以在相邻的孔之间留下足够的距离（即，身体的连接部分的适当宽度）。 该设计使得可以在确保二维光子晶体的足够强度的同时放大每个孔22。 这种结构创建了宽度大的绝对PBG。

公开(公告)号：US07738749B2

公开(公告)日：2010-06-15

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： G02B6/28 ,  G02B6/26 ,  G02B6/42 ,  G02B6/032

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。 还形成有沿着从禁带区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：US07711228B2

公开(公告)日：2010-05-04

申请号：US11661232

申请日：2005-08-30

申请人： Susumu Noda ,  Takashi Asano ,  Hitoshi Kitagawa ,  Seiichi Takayama

发明人： Susumu Noda ,  Takashi Asano ,  Hitoshi Kitagawa ,  Seiichi Takayama

IPC分类号： G02B6/10

CPC分类号： G02B6/1225 ,  B82Y20/00

摘要： The present invention intends to provide a two-dimensional photonic crystal having a wide photonic band gap (PBG). In a slab-shaped body 31, a number of holes 32, whose sectional shape on a plane parallel to the slab surface is an equilateral triangle, are periodically arranged in a triangular lattice pattern. The upper and lower sides of the holes 32 are covered with the material of the body 31. The aforementioned sectional shape is uneven along the direction perpendicular to the slab surface. This construction expands the PBG for TM-polarized light and thereby increases its energy region overlapping with the PBG for TE-polarized light. This overlapping section is the complete PBG. If a ray of light whose wavelength corresponds to an energy level within the complete PBG, neither the TE-polarized nor TM-polarized component of the light can be propagated through the photonic crystal. Therefore, even if a waveguide and/or a resonator is provided in the photonic crystal, the light having the aforementioned wavelength will never leak from the waveguide or resonator into the photonic crystal.

摘要翻译： 本发明旨在提供具有宽光子带隙（PBG）的二维光子晶体。 在板状主体31中，在与平板面平行的平面上的截面形状为等边三角形的多个孔32周期性地排列成三角形格子状。 孔32的上侧和下侧被主体31的材料覆盖。上述截面形状沿着与板坯表面垂直的方向不均匀。 这种结构扩展了TM偏振光的PBG，从而增加了其与TE偏振光的PBG重叠的能量区域。 这个重叠部分是完整的PBG。 如果其波长对应于完整PBG内的能级的光线，则光的TE偏振和TM偏振分量都不能通过光子晶体传播。 因此，即使在光子晶体中设置波导和/或谐振器，具有上述波长的光也不会从波导或谐振器泄漏到光子晶体中。

公开(公告)号：US20090034566A1

公开(公告)日：2009-02-05

申请号：US11919344

申请日：2005-04-28

申请人： Susumu Noda ,  Masahiro Imada ,  Dai Ohnishi

发明人： Susumu Noda ,  Masahiro Imada ,  Dai Ohnishi

IPC分类号： H01S3/16

CPC分类号： H01S5/0425 ,  B41J2/45 ,  H01S5/06243 ,  H01S5/105 ,  H01S5/18 ,  H01S2301/18

摘要： One objective of the present invention is to provide a laser device which is capable of scanning beams of a laser light of high output power at a high speed without using mechanical scanning mechanisms. A plurality of the upper electrodes 33 is linearly arranged in the photonic crystal laser provided with an active layer 21 and a two-dimensional photonic crystal layer 23 which are held between upper electrodes 33 and a lower electrode 27. A current is introduced from one upper electrode 33 or the plurality of the upper electrodes 33 disposed adjacently. Therefore, the active layer 21 generates light and the light is intensified by diffraction in the two-dimensional photonic crystal layer 23, so that a stronger laser light is emitted to the outside from around the upper electrodes 33 into which a current is introduced. When the current-injected upper electrodes are sequentially switched, a laser light scan is performed in the direction of the array of the upper electrodes. Since this switching can be made electrically, a laser light scan can be achieved at a high speed without using the mechanical scanning mechanisms.

摘要翻译： 本发明的一个目的是提供一种能够在不使用机械扫描机构的情况下高速扫描高输出功率的激光的光束的激光装置。 多个上部电极33线性排列在设置有被保持在上部电极33和下部电极27之间的有源层21和二维光子晶体层23的光子晶体激光器中。从一个上部电极引入电流 电极33或相邻设置的多个上电极33。 因此，有源层21产生光，并且通过二维光子晶体层23中的衍射增强光，使得更强的激光从引入电流的上电极33的周围向外部发射。 当依次切换电流注入的上电极时，在上电极阵列的方向上执行激光扫描。 由于可以进行该切换，因此可以在不使用机械扫描机构的情况下高速实现激光扫描。

公开(公告)号：US07390683B2

公开(公告)日：2008-06-24

申请号：US11375016

申请日：2006-03-15

申请人： Atsushi Sugitatsu ,  Hitoshi Tada ,  Susumu Noda

发明人： Atsushi Sugitatsu ,  Hitoshi Tada ,  Susumu Noda

IPC分类号： H01L21/00

CPC分类号： H01S5/0425 ,  B82Y20/00 ,  G02B6/12004 ,  G02B6/1225 ,  G02F1/025 ,  G02F2202/32 ,  H01L2933/0083 ,  H01S5/0424 ,  H01S5/105 ,  H01S5/1085 ,  H01S5/2004 ,  H01S5/3054 ,  H01S5/32

摘要： A semiconductor device has a two-dimensional slab photonic crystal structure in which a substrate supports a sheet-like slab layer including, sequentially stacked, a lower cladding layer, an active layer, and an upper cladding layer. A periodic refractive index profile structure, in surfaces of the stacked layers, introduces a linear defect region that serves as a waveguide. A p-type region and an n-type region in the slab layer define a pn junction surface at a predetermined angle with respect to the surfaces of the stacked layers in the slab layer.

摘要翻译： 半导体器件具有二维平板光子晶体结构，其中基板支撑包括顺序堆叠的下包层，有源层和上包层的片状板层。 在堆叠层的表面中的周期性折射率分布结构引入用作波导的线性缺陷区域。 板状层中的p型区域和n型区域相对于板坯层中的堆叠层的表面以预定的角度限定pn结表面。

公开(公告)号：US07336879B2

公开(公告)日：2008-02-26

申请号：US10927029

申请日：2004-08-26

申请人： Hitoshi Kitagawa ,  Susumu Noda ,  Takashi Asano

发明人： Hitoshi Kitagawa ,  Susumu Noda ,  Takashi Asano

IPC分类号： G02B6/10

CPC分类号： G02B6/1225 ,  B82Y20/00

摘要： A two-dimensional photonic crystal slab having a photonic band gap common to a light beam in the TE-like mode and a light beam in the TM-like mode includes a slab member containing a high refractive index material and low refractive index sectors, arranged in the slab member in a triangular pattern, having a triangular prism shape. The two-dimensional photonic crystal slab further includes a linear defect section that is a disordered portion in a periodic structure of a photonic crystal and extends in the Γ-J direction. Light beams in the TE-like mode and light beams in the TM-like mode can be propagated through the waveguide section. A two-dimensional photonic crystal waveguide includes the two-dimensional photonic crystal slab.

摘要翻译： 具有与TE样模式的光束共同的光子带隙和TM状模式的光束的二维光子晶体板包括：包含高折射率材料和低折射率扇区的板状构件， 在具有三角形形状的三角形图案的板坯构件中。 二维光子晶体板还包括线性缺陷部分，其是光子晶体的周期性结构中的无序部分并且沿伽马J方向延伸。 TE样模式的光束和TM状模式的光束可以通过波导部分传播。 二维光子晶体波导包括二维光子晶体板。

公开(公告)号：US07321707B2

公开(公告)日：2008-01-22

申请号：US10569922

申请日：2004-08-26

申请人： Susumu Noda ,  Takashi Asano ,  Bong-Shik Song ,  Hitomichi Takano

发明人： Susumu Noda ,  Takashi Asano ,  Bong-Shik Song ,  Hitomichi Takano

IPC分类号： G02B6/26

CPC分类号： G02B6/12007 ,  B82Y20/00 ,  G02B6/1225 ,  G02B2006/12164 ,  H01P1/2005

摘要： In this electromagnetic wave frequency filter, an electromagnetic wave of a predetermined frequency matching a resonant frequency of a resonator 41 is transmitted from an input waveguide 2 to an output waveguide 3 through the resonator 41, and is outputted from a drop port P31. This filter has an input-waveguide-side reflector 211 and an output-waveguide-side reflector 311, which reflect the electromagnetic wave of the predetermined frequency. The electromagnetic wave frequency filter satisfies the following relation: Qinb/(1−cos θ1)

公开(公告)号：US20080013902A1

公开(公告)日：2008-01-17

申请号：US11661232

申请日：2005-08-30

申请人： Susumu Noda ,  Takashi Asano ,  Hitoshi Kitagawa ,  Seiichi Takayama

发明人： Susumu Noda ,  Takashi Asano ,  Hitoshi Kitagawa ,  Seiichi Takayama

IPC分类号： G02B6/02 ,  G02B6/10

CPC分类号： G02B6/1225 ,  B82Y20/00

摘要： The present invention intends to provide a two-dimensional photonic crystal having a wide photonic band gap (PBG). In a slab-shaped body 31, a number of holes 32, whose sectional shape on a plane parallel to the slab surface is an equilateral triangle, are periodically arranged in a triangular lattice pattern. The upper and lower sides of the holes 32 are covered with the material of the body 31. The aforementioned sectional shape is uneven along the direction perpendicular to the slab surface. This construction expands the PBG for TM-polarized light and thereby increases its energy region overlapping with the PBG for TE-polarized light. This overlapping section is the complete PBG. If a ray of light whose wavelength corresponds to an energy level within the complete PBG, neither the TE-polarized nor TM-polarized component of the light can be propagated through the photonic crystal. Therefore, even if a waveguide and/or a resonator is provided in the photonic crystal, the light having the aforementioned wavelength will never leak from the waveguide or resonator into the photonic crystal.

摘要翻译： 本发明旨在提供具有宽光子带隙（PBG）的二维光子晶体。 在板状主体31中，在与平板面平行的平面上的截面形状为等边三角形的多个孔32周期性地排列成三角形格子状。 孔32的上侧和下侧被主体31的材料覆盖。 上述截面形状沿与板坯表面垂直的方向不均匀。 这种结构扩展了TM偏振光的PBG，从而增加了其与TE偏振光的PBG重叠的能量区域。 这个重叠部分是完整的PBG。 如果其波长对应于完整PBG内的能级的光线，则光的TE偏振和TM偏振分量都不能通过光子晶体传播。 因此，即使在光子晶体中设置波导和/或谐振器，具有上述波长的光也不会从波导或谐振器泄漏到光子晶体中。

公开(公告)号：US20070075318A1

公开(公告)日：2007-04-05

申请号：US10550596

申请日：2004-03-23

申请人： Susumu Noda ,  Mitsuru Yokoyama ,  Koujirou Sekine ,  Eiji Miyai

发明人： Susumu Noda ,  Mitsuru Yokoyama ,  Koujirou Sekine ,  Eiji Miyai

IPC分类号： H01L33/00

CPC分类号： H01S5/34313 ,  B82Y20/00 ,  G02B6/1225 ,  H01S5/105 ,  H01S5/1228 ,  H01S5/34373

摘要： A two-dimensional photonic crystal surface-emitting laser having a photonic crystal (20) in which a photonic crystal periodic structure (21) is located in or near an active layer (first medium) (12) which emits light when carriers are injected thereto. The photonic crystal periodic structure (21) comprises a second medium with a refractive index different from that of the active layer scattered in two-dimensional periodic array. The photonic crystal periodic structure is of a square lattice structure or a triangular lattice structure which has translation symmetry but does not have rotation symmetry. Alternatively, the phtonic crystal periodic structure is of a square lattice structure or a rectangular lattice structure which is classified into pl, pm, pg or cm according to the two-dimensional pattern classification method. It is the most desirable that the lattice structure is composed of triangular lattice points.

摘要翻译： 一种具有光子晶体（20）的二维光子晶体表面发射激光器，其中光子晶体周期结构（21）位于在载体被注入时发光的有源层（第一介质）（12）中或其附近 。 光子晶体周期结构（21）包括具有与二维周期性阵列中散射的有源层的折射率不同的折射率的第二介质。 光子晶体周期结构具有平方晶格结构或具有平移对称但不具有旋转对称性的三角形晶格结构。 或者，根据二维图案分类方法，所述晶体晶体周期结构为方形晶格结构或矩形晶格结构，其分为p1，pm，pg或cm。 最理想的是，晶格结构由三角形点阵组成。