公开(公告)号：EP1933431A1

公开(公告)日：2008-06-18

申请号：EP06783175.0

申请日：2006-09-05

申请人： Kyoto University ,  ROHM CO., LTD.

发明人： NODA, Susumu ,  MIYAI, Eiji ,  OHNISHI, Dai

IPC分类号： H01S5/18

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 24 created from a plate-shaped matrix body in which a large number of holes 25 are periodically arranged and an active layer 23 arranged on one side of the two-dimensional photonic crystal layer 24, the holes 25 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 24, 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： 本发明旨在提供使用二维光子晶体的表面发射激光光源，其中在垂直于表面的方向上提取光的效率高。 在设置有二维光子晶体层24的激光光源中，该二维光子晶体层24由周期性排列有大量孔25的板状矩阵体和在二维光子晶体一侧配置的有源层23 如图24所示，孔25被形成为具有预定横截面形状的圆柱状，例如圆形，并且每个柱状孔的主轴倾斜到矩阵体的表面。 当提供这个二维光子晶体层24时，使用二维光子晶体的表面发射激光源具有数千的QŠ值（即垂直于表面的方向的Q值），这是 适合于激光的振荡，并且在垂直于表面的方向上提取光的效率高。

公开(公告)号：EP2006965A2

公开(公告)日：2008-12-24

申请号：EP07736997.3

申请日：2007-03-30

申请人： Kyoto University ,  Rohm Co., Ltd.

发明人： NODA, Susumu ,  KUROSAKA, Yoshitaka ,  MIYAI, Eiji ,  OHNISHI, Dai ,  KUNISHI, Wataru

IPC分类号： H01S5/18

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沿着与第一半线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，因此折射率 两点之间的指标。 因此，防止两点处的电场矢量由于相消干涉而彼此抵消，使得所得到的激光比传统示例更强。

公开(公告)号：EP1998420A1

公开(公告)日：2008-12-03

申请号：EP07736925.4

申请日：2007-03-20

申请人： Kyoto University ,  Rohm Co., Ltd.

发明人： SAKAI, Kyosuke ,  MIYAI, Eiji ,  NODA, Susumu ,  OHNISHI, Dai ,  KUNISHI, Wataru

IPC分类号： H01S5/18

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由此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上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振幅包络的位置具有最大值。 该设计在抑制第二模式的同时强化基本模式，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：EP4415061A1

公开(公告)日：2024-08-14

申请号：EP22898358.1

申请日：2022-11-01

申请人： Kyoto University ,  Stanley Electric Co., Ltd.

发明人： NODA, Susumu ,  KASHIWAGI, Hiroyuki ,  IDE, Shunya ,  IWASAKI, Tessei ,  KAWAKAMI, Yasuyuki ,  YOKOBAYASHI, Yusuke

IPC分类号： H01L33/16 ,  H01L33/22

CPC分类号： H01L33/16 ,  H01L33/22

摘要： There are provided a substrate (11) with a moth-eye nano pattern (11M) on a surface of the substrate in which cone-shaped protrusions are periodically formed, a first semiconductor layer (21) configured to be formed on the moth-eye nano pattern (11M) and have a photonic crystal layer (21P), an active layer (23) configured to be formed on the first semiconductor layer (21) and have a light-emitting layer (23A), and a second semiconductor layer (25) configured to be formed on the active layer (23).

公开(公告)号：EP3930120A1

公开(公告)日：2021-12-29

申请号：EP20758933.4

申请日：2020-02-04

申请人： Kyoto University

发明人： NODA, Susumu ,  INOUE, Takuya ,  YOSHIDA, Masahiro ,  DE ZOYSA, Menaka

IPC分类号： H01S5/18

摘要： A two-dimensional photonic-crystal surface-emitting laser 10 includes an active layer 11; and a photonic-crystal layer 12 including a two-dimensional photonic-crystal light-amplification portion 123 that is a first two-dimensional photonic-crystal region provided in a plate-shaped base body 121 disposed on one side of the active layer 11, and includes an amplification-portion photonic band gap 15 which is a photonic band gap formed between two photonic bands having a band edge at a predetermined point in a reciprocal lattice space, and a two-dimensional photonic-crystal light-reflection portion 125 that is a second two-dimensional photonic-crystal region provided around the two-dimensional photonic-crystal light-amplification portion 123, and includes a reflection-portion photonic band gap 16 which is a photonic band gap formed between two photonic bands having a band edge at the predetermined point of the reciprocal lattice space, wherein energy ranges of the amplification-portion photonic band gap 15 and the reflection-portion photonic band gap 16 partially overlap and are different.

公开(公告)号：EP3588704A1

公开(公告)日：2020-01-01

申请号：EP18757376.1

申请日：2018-02-27

申请人： Kyoto University ,  Stanley Electric Co., Ltd.

发明人： NODA, Susumu ,  TANAKA, Yoshinori ,  DE ZOYSA, Menaka ,  SONODA, Junichi ,  KOIZUMI, Tomoaki ,  EMOTO, Kei

IPC分类号： H01S5/18 ,  C23C16/34 ,  C30B29/38 ,  H01L21/205 ,  H01S5/12 ,  H01S5/343

摘要： A method for manufacturing a surface emitting laser made of a group-III nitride semiconductor by an MOVPE method according to the present invention comprises: (a) a step of growing a first cladding layer of a first conductive type on a substrate; (b) a step of growing a first optical guide layer of said first conductive type on said first cladding layer; (c) a step of forming holes having a two-dimensional periodicity in a plane parallel to said first optical guide layer, in said first optical guide layer by etching; (d) a step of supplying a gas containing a group-III material and a nitrogen source and performing growth to form recessed portions having a facet of a predetermined plane direction above openings of said holes, thereby closing the openings of said holes; and (e) a step of planarizing said recessed portions by mass transport, after said openings of said holes have been closed, wherein after said planarizing step has been performed, at least one of side surfaces of said hole is a {10-10} facet.

公开(公告)号：EP2523220A1

公开(公告)日：2012-11-14

申请号：EP10842206.4

申请日：2010-12-22

申请人： Sharp Kabushiki Kaisha ,  Kyoto University

发明人： SHIGETA, Hiroaki ,  YASHIRO, Yuhji ,  TSUDA, Yuhsuke ,  MIYANISHI, Shintaro ,  NODA, Susumu ,  FUJITA, Masayuki ,  TANAKA, Yoshinori

IPC分类号： H01L31/04

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. Q V 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 Q α 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，以具有光子带隙。 光子晶体具有缺陷（31），以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产生的共振效应的大小的Q值，基本上等于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Q± （2）。

公开(公告)号：EP4300731A1

公开(公告)日：2024-01-03

申请号：EP22759758.0

申请日：2022-02-24

申请人： Kyoto University

发明人： NODA, Susumu ,  DE ZOYSA, Menaka ,  SAKATA, Ryoichi ,  ISHIZAKI, Kenji ,  INOUE, Takuya ,  YOSHIDA, Masahiro

IPC分类号： H01S5/11 ,  H01S5/18

摘要： A two-dimensional photonic crystal laser includes: a pair of electrodes (a first electrode 171 and a second electrode 172); an active layer (11) provided between the pair of electrodes and configured to generate light of a predetermined wavelength upon being supplied with an electric current from the electrodes; and a two-dimensional photonic crystal layer (12) provided between any one of the pair of electrodes and the active layer (11) and including a plate-shaped base member (121) and a plurality of modified refractive index regions (122) disposed in the base member (121) and having a refractive index different from that of the base member (121), in which the plurality of modified refractive index regions (122) are disposed to be shifted by different shift amounts from respective lattice points of a two-dimensional lattice which are periodically disposed in the base member with a period corresponding to the predetermined wavelength, or/and are disposed at the respective lattice points with different areas, the shift amount or/and the area of each of the plurality of modified refractive index regions (122) is/are modified with a composite modulation period in which a plurality of periods different from each other are superposed on each other, and is/are expressed by a modulation phase Ψ(r↑) expressed using a vector r↑ indicating a position of each of the lattice points of the two-dimensional lattice, a vector k n ↑ indicating a combination of an inclination angle and an azimuthal angle of each of n (n is an integer of 2 or more) laser beams differing in the inclination angle and/or the azimuthal angle from each other, and an amplitude A n and a phase exp(iα n ) determined for each n as Ψ r ↑ = arg ∬ ∑ n A n exp i α n δ k ↑ − k n ↑ exp i k ↑ ⋅ r ↑ d k ↑ and
the amplitude A n and/or the phase exp(iα n ) for each value of n differ(s) from each other in at least two different values of n.

公开(公告)号：EP4131675A1

公开(公告)日：2023-02-08

申请号：EP21781520.8

申请日：2021-03-30

申请人： Kyoto University

发明人： NODA, Susumu ,  YOSHIDA, Masahiro ,  DE ZOYSA, Menaka ,  ISHIZAKI, Kenji

IPC分类号： H01S5/18

摘要： Provided is a two-dimensional photonic-crystal laser capable of scanning with a laser beam and emitting the laser beam without the laser beam being attenuated by an electrode. A two-dimensional photonic-crystal laser 1 formed by sandwiching, between a first electrode 181 and a second electrode 182, a layered body 10 including an active layer 13 and a two-dimensional photonic-crystal layer 15 in which modified refractive index areas 152 having a refractive index different from a refractive index of a plate-shaped base body 151 are periodically arranged two-dimensionally on the base body 151. The first electrode 181 is divided into a plurality of partial electrodes 1811, and the second electrode 182 is a frame-shaped electrode including a frame-shaped portion 1821 made of a conductor, the second electrode 182 having a window portion 1822 which is a space inside the frame-shaped portion 1821 being arranged to face a region enclosing a plurality of the partial electrodes 1811. A lens 19 provided on the side opposite to the layered body 10 of the second electrode 182 in a manner covering the entire window portion 1822 is included.

公开(公告)号：EP2544320A1

公开(公告)日：2013-01-09

申请号：EP11750620.4

申请日：2011-03-01

申请人： Kyoto University

发明人： NODA, Susumu ,  KITAMURA, Kyoko ,  KUROSAKA, Yoshitaka ,  SAKAI, Kyosuke

IPC分类号： H01S5/12 ,  H01S5/18

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

摘要： The present invention is aimed at providing a photonic crystal laser capable of producing a radially-polarized halo-shaped laser beam having a smaller width than that of conventional beams. A photonic crystal laser 10 includes: an active layer 11; a ring-shaped photonic crystal 123 including a plate-shaped base body 121 on one side of the active layer 11, the base body 121 having a number of modified refractive index areas 122 of the same shape, the modified refractive index areas 122 having a refractive index different from that of the base body 121 and being periodically arranged in the circumferential direction of a ring, and each of the modified refractive index areas 122 being asymmetrically shaped with respect to an axis extending through the center of the modified refractive index area 122 in the radial direction of the ring; a first electrode 131 and a second electrode 132 facing each other across the active layer 11 and the ring-shaped photonic crystal 123; and a window provided in the second electrode 141, the window being capable of allowing passage of a laser light generated from the ring-shaped photonic crystal 123.

摘要翻译： 本发明旨在提供一种光子晶体激光器，其能够产生具有比常规光束更小的宽度的径向偏振的卤素激光束。 光子晶体激光器10包括：有源层11; 在有源层11的一侧包括板状基体121的环状光子晶体123，基体121具有多个相同形状的改性折射率区域122，改性折射率区域122具有 折射率不同于基体121的折射率并且周期性地沿环的周向布置，并且每个修改的折射率区域122相对于延伸穿过改性折射率区域122的中心的轴线是不对称的形状 在环的径向方向; 通过有源层11和环状光子晶体123彼此面对的第一电极131和第二电极132; 以及设置在第二电极141中的窗口，窗口能够允许从环形光子晶体123产生的激光的通过。