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：US07860141B2

公开(公告)日：2010-12-28

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： H01S5/00

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：US09130348B2

公开(公告)日：2015-09-08

申请号：US13192852

申请日：2011-07-28

申请人： Susumu Noda ,  Takui Sakaguchi ,  Kazuya Nagase ,  Wataru Kunishi ,  Eiji Miyai ,  Yoshikatsu Miura ,  Dai Ohnishi

发明人： Susumu Noda ,  Takui Sakaguchi ,  Kazuya Nagase ,  Wataru Kunishi ,  Eiji Miyai ,  Yoshikatsu Miura ,  Dai Ohnishi

IPC分类号： H01S5/00 ,  H01S5/12 ,  H01S5/10 ,  H01S5/187

CPC分类号： H01S5/105 ,  H01S5/1231 ,  H01S5/18316 ,  H01S5/18319 ,  H01S5/187 ,  H01S5/3013 ,  H01S2301/17

摘要： A two-dimensional photonic crystal laser according to the present invention includes a two-dimensional photonic crystal layer 15 having a base body made of AlαGa1-αAs (0

摘要翻译： 根据本发明的二维光子晶体激光器包括具有由AlαGa1-αAs（0 <α<1）或（Al＆bgr; Ga1-bgr））γIn1-γP（...）形成的基体的二维光子晶体层15 0 <=＆bgr; <1,0 <γ<1），周期性地布置有修正的折射率区域（空气孔）151，以及通过外延法在二维光子晶体层15上形成的外延生长层16。 由于AlαGa1-αAs和（Al＆bgr; Ga1-bgr）γIn1-γP即使在高温下也是固体，所以在形成外延生长层16的过程中，空气孔151不会变形， 作为谐振器的三维光子晶体层15可以保持在高水平。

公开(公告)号：US20090285255A1

公开(公告)日：2009-11-19

申请号：US12225194

申请日：2007-03-20

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

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

IPC分类号： H01S5/183

CPC分类号： H01S5/18 ,  B82Y20/00 ,  G11B7/127 ,  H01S5/0425 ,  H01S5/105 ,  H01S5/125 ,  H01S5/2027 ,  H01S5/34313 ,  H01S2301/14 ,  H01S2301/18

摘要： An objective of the present invention is to provide a surface emitting laser capable of selectively generating a laser oscillation in the fundamental mode and thereby emitting a single-wavelength laser light. In a surface emitting laser including an active layer and a two-dimensional photonic crystal provided on one side of the active layer, a reflector 45 or 46 is provided at least at a portion of the circumference of the two-dimensional photonic crystal. The reflector has a reflectance distribution in which the reflectance has a maximum value at a position where the amplitude envelope of the fundamental mode of an internal resonance light created within the two-dimensional photonic crystal. This design strengthens the fundamental mode while suppressing the second mode, thus enabling the laser oscillation in the fundamental mode to be selectively obtained, so that a single-wavelength laser light can be emitted.

摘要翻译： 本发明的目的是提供一种能够选择性地在基模中产生激光振荡并从而发射单波长激光的表面发射激光器。 在包括有源层和设置在有源层的一侧的二维光子晶体的表面发射激光器中，至少在二维光子晶体的圆周的一部分处提供反射器45或46。 反射器具有反射率分布，其中反射率在二维光子晶体内产生的内部共振光的基模的幅度包络的位置处具有最大值。 该设计在抑制第二模式的同时加强基本模式，从而能够选择性地获得基模中的激光振荡，从而可以发射单波长激光。

公开(公告)号：US20070158662A1

公开(公告)日：2007-07-12

申请号：US11640837

申请日：2006-12-19

申请人： Dai Ohnishi ,  Susumu Noda

发明人： Dai Ohnishi ,  Susumu Noda

IPC分类号： H01L33/00

CPC分类号： H01L33/24 ,  H01L33/0095 ,  H01L33/20 ,  H01L2933/0083

摘要： A two-dimensional photonic crystal LED composed of a p-type semiconductor cladding layer 12, an active layer 11 of light-emitting material, and an n-type semiconductor cladding layer 13 placed between a pair of electrodes, where air holes 16 penetrating through the layers 12, 11 and 13 and arranged periodically in the layers 12, 11 and 13 are provided. At least a part of the inner wall of the air holes 16 is oxidized 17 in either one or both of the p-type semiconductor cladding layer 12 and the n-type semiconductor cladding layer 13. The holes and electrons injected from the electrodes avoid the oxidized region 17 and enter the active layer 11 apart from the air holes 16, which minimizes the recombination (surface recombination) of the holes and electrons producing heat instead of light.

摘要翻译： 由p型半导体包层12，发光材料的有源层11和放置在一对电极之间的n型半导体包层13构成的二维光子晶体LED，其中气孔16穿透 设置层12,11和13并周期性地布置在层12,11和13中。 空气孔16的内壁的至少一部分在p型半导体包覆层12和n型半导体包层13中的任一个或两个中被氧化17。从电极注入的空穴和电子避免了 氧化区17并且进入与气孔16分开的有源层11，这使空穴和产生热而不是光的电子的复合（表面复合）最小化。

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：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：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。