公开(公告)号：US20130039375A1

公开(公告)日：2013-02-14

申请号：US13571985

申请日：2012-08-10

申请人： Susumu NODA ,  Seita IWAHASHI ,  Toshiyuki NOBUOKA ,  Takui SAKAGUCHI ,  Eiji MIYAI ,  Wataru KUNISHI ,  Dai OHNISHI ,  Kazuya NAGASE ,  Yoshikatsu MIURA

发明人： Susumu NODA ,  Seita IWAHASHI ,  Toshiyuki NOBUOKA ,  Takui SAKAGUCHI ,  Eiji MIYAI ,  Wataru KUNISHI ,  Dai OHNISHI ,  Kazuya NAGASE ,  Yoshikatsu MIURA

IPC分类号： H01S5/18

CPC分类号： H01S5/105 ,  H01S5/0425 ,  H01S5/18

摘要： A photonic crystal surface emission laser includes an active layer, and a photonic crystal layer made of a plate-shaped slab provided with modified refractive index area having a refractive index different from that of the slab, the modified refractive index areas being arranged on each of the lattice points of a first rhombic-like lattice and a second rhombic-like lattice in which both diagonals are mutually parallel and only one diagonal is of a different length, wherein ax1, ax2, ay, and n satisfy the following inequality:  1 a x   1 - 1 a x   2  ( 1 a x   1 + 1 a x   2 ) 2 + ( 2 a y ) 2 ≤ 1 n .

摘要翻译： 光子晶体表面发射激光器包括有源层和由具有折射率不同于板的折射率区域的具有改性折射率区域的板状板制成的光子晶体层，所述改性折射率区域被布置在 两个对角线相互平行且只有一个对角线具有不同长度的第一菱形晶格和第二菱形晶格的晶格点，其中ax1，ax2，ay和n满足以下不等式：1 （1斧1 + 1斧2）2 +（2 ay）2≤1 n。

公开(公告)号：US20100140651A1

公开(公告)日：2010-06-10

申请号：US12704325

申请日：2010-02-11

申请人： Susumu NODA ,  Takashi ASANO ,  Masayuki FUJITA ,  Hitoshi KITAGAWA ,  Toshihide SUTO

发明人： Susumu NODA ,  Takashi ASANO ,  Masayuki FUJITA ,  Hitoshi KITAGAWA ,  Toshihide SUTO

IPC分类号： H01L33/00

CPC分类号： H01L33/20 ,  H01L33/10 ,  H01L2933/0083

摘要： The present invention provides a diffraction grating light-emitting diode in which the external quantum efficiency is improved by appropriately setting the period of holes when the holes are two-dimensionally periodically formed. A light-emitting diode is configured by laminating, on a sapphire substrate, an n-type GaN layer, an InGaN/GaN active layer, a p-type GaN layer, and a transparent electrode layer. Further, a large number of holes are two-dimensionally periodically formed in the transparent electrode layer, the p-type GaN layer, the InGaN/GaN active layer, and the n-type GaN layer so as to extend in a direction substantially perpendicular to these layers. Assuming that the non-radiative recombination rate is vs, the arrangement period a of the holes satisfies the following expression: v s  η in ( 0 ) / a

摘要翻译： 本发明提供一种衍射光栅发光二极管，其中通过在孔被二维周期性地形成时适当地设定孔的周期来提高外部量子效率。 发光二极管通过在蓝宝石衬底上层叠n型GaN层，InGaN / GaN有源层，p型GaN层和透明电极层而构成。 此外，在透明电极层，p型GaN层，InGaN / GaN有源层和n型GaN层中二维周期性地形成大量的孔，以便在基本垂直于 这些层。 假设非辐射复合率为vs，孔的排列周期a满足以下表达式：v s＆eegr; in（0）/ a <（Fγ-1）2＆pgr; （1-f）R sp

公开(公告)号：US20100104250A1

公开(公告)日：2010-04-29

申请号：US12530317

申请日：2008-03-25

申请人： Susumu NODA ,  Takashi ASANO ,  Keita MOCHIZUKI

发明人： Susumu NODA ,  Takashi ASANO ,  Keita MOCHIZUKI

IPC分类号： G02B6/10 ,  B29D11/00

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

摘要： A two-dimensional photonic crystal according to the present invention includes a first layer having a dielectric first layer slab in which first layer holes having a refractive index lower than that of the first layer slab are arranged cyclically, a second layer formed on the first layer, including dielectric columns having a refractive index higher than the air arranged in the air with the same cycle as the first layer hole, and a third layer having a dielectric third layer slab in which third layer holes having a refractive index lower than that of the third layer slab are arranged cyclically. Thus, it is possible to obtain the two-dimensional photonic crystal that can create a wider complete PBG than before regardless of the polarization of light and can be manufactured easily.

摘要翻译： 根据本发明的二维光子晶体包括具有电介质第一层板的第一层，其中折射率低于第一层板的折射率的第一层孔循环地布置;第二层，形成在第一层上 包括折射率高于布置在与第一层孔相同周期的空气中的空气的电介质柱，以及第三层，具有介电第三层板，其中第三层孔的折射率低于 循环地布置第三层板。 因此，可以获得能够产生比以前更宽的完整PBG的二维光子晶体，而不管光的偏振，并且可以容易地制造。

公开(公告)号：US20090016395A1

公开(公告)日：2009-01-15

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： H01S3/16

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。