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1. 发明公开

EP3930120A1 TWO-DIMENSIONAL PHOTONIC CRYSTAL PLANE EMISSION LASER 审中-公开
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.

2. 发明公开

EP3588704A1 SURFACE-EMITTING LASER AND METHOD FOR MANUFACTURING SURFACE-EMITTING LASER 有权
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.

3. 发明公开

EP2523220A1 SOLAR CELL, SOLAR CELL PANEL, AND DEVICE COMPRISING SOLAR CELL 审中-公开
标题翻译： SOLARZELLE，SOLARZELLENTAFEL UND VORRICHTUNG MIT SOLARZELLE
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）。

4. 发明公开

EP4131677A1 TWO-DIMENSIONAL PHOTONIC CRYSTAL LASER 审中-实审
公开(公告)号：EP4131677A1
公开(公告)日：2023-02-08
申请号：EP21781958.0
申请日：2021-03-17
申请人： Kyoto University , MITSUBISHI ELECTRIC CORPORATION
发明人： NODA, Susumu , DE ZOYSA, Menaka , ISHIZAKI, Kenji , KUNISHI, Wataru , ENOKI, Kentaro
IPC分类号： H01S5/183 , H01S5/18
摘要： A two-dimensional photonic-crystal laser 10 includes: a substrate 11 made of an n-type semiconductor; a p-type cladding layer (p-type semiconductor layer) 131 provided on an upper side of the substrate 11 and made of a p-type semiconductor; an active layer 14 provided on an upper side of the p-type cladding layer 131; a two-dimensional photonic-crystal layer 16 provided on an upper side of the active layer 14 and including a plate-shaped base body 161 made of an n-type semiconductor in which modified refractive index areas 162 whose refractive index differs from the base body 161 are periodically arranged; a first tunnel layer 121 provided between the substrate 11 and the p-type cladding layer 131 and made of an n-type semiconductor having a carrier density higher than a carrier density of the substrate 11; a second tunnel layer 122 provided in contact with the first tunnel layer 121 between the first tunnel layer 121 and the p-type cladding layer 131, and made of a p-type semiconductor having a carrier density higher than a carrier density of the p-type semiconductor layer; a first electrode 181 provided on a lower side of the substrate 11 or in the substrate 11; and a second electrode 182 provided on an upper side of the two-dimensional photonic-crystal layer 16.

5. 发明公开

EP4105967A1 SURFACE-EMITTING LASER ELEMENT AND SURFACE-EMITTING LASER ELEMENT MANUFACTURING METHOD 审中-实审
公开(公告)号：EP4105967A1
公开(公告)日：2022-12-21
申请号：EP21772301.4
申请日：2021-02-10
申请人： Kyoto University , STANLEY ELECTRIC CO., LTD.
发明人： NODA, Susumu , INOUE, Takuya , KOIZUMI, Tomoaki , EMOTO, Kei
IPC分类号： H01L21/205 , H01S5/18
摘要： A surface-emitting laser element includes: a first guide layer including a photonic crystal layer that is formed on a c plane of a group-3 nitride semiconductor and includes air holes arranged with two-dimensional periodicity in a plane parallel to the photonic crystal layer, and an embedding layer that is formed on the photonic crystal layer and closes the air holes; an active layer formed on the first guide layer; and a second guide layer formed on the active layer, wherein an air hole set including at least a main air hole and a sub-air hole smaller in size than the main air hole is arranged at each square lattice point in the plane parallel to the photonic crystal layer, and wherein the main air hole has a regular-hexagonal prism shape, a long-hexagonal prism shape, or an elliptic cylindrical shape with a major axis parallel to a axis.

6. 发明公开

EP3425754A1 HEAT-RADIATING LIGHT SOURCE 有权
公开(公告)号：EP3425754A1
公开(公告)日：2019-01-09
申请号：EP17759631.9
申请日：2017-02-13
申请人： Kyoto University
发明人： NODA, Susumu , INOUE, Takuya , JI, Anqi , ASANO, Takashi
IPC分类号： H01S5/04 , H01S5/34
摘要： A thermal radiation light source 10 includes a laminated body (10S) including m quantum well structure layers (111, 112) laminated where m is an integer of 2 or more, and including an n-layer (121, 122) and a p-layer (13) sandwiching each of the quantum well structure layers from both sides in the laminating direction wherein the n-layer is made of an n-type semiconductor and the p-layer is made of a p-type semiconductor; a voltage applying unit (151, 152) that is provided for each of the m quantum well structure layers and is directly or indirectly connected to the n-layer and the p-layer sandwiching each quantum well structure layer and that applies a voltage for moving to the n-layers or the p-layer a charge in a quantum well of each quantum well structure layer; a voltage switching unit (161, 162, 17) that switches ON/OFF of application of the voltage to each of the m quantum well structure layers; and a photonic crystal portion (20) disposed in the laminated body or adjacent to the laminated body, and formed so that lights of m kinds of wavelengths resonate, each of the lights of the m wavelengths being generated in each of the m quantum well structure layers corresponding to transition energy between subbands in the quantum well of the quantum well structure layer. The thermal radiation light source 10 can generate a plurality of wavelengths by switching the plurality of wavelengths one by one at a high speed.

7. 发明公开

EP1933431A1 TWO-DIMENSIONAL PHOTONIC CRYSTAL SURFACE LIGHT EMITTING LASER LIGHT SOURCE 审中-公开
标题翻译： OBERFLÄCHENEMITTIERENDELASERLICHTQUELLE MIT EINEM ZWEIDIMENSIONALEN PHOTONISCHEN KRISTALL
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。

8. 发明公开

EP1666939A1 TWO-DIMENSIONAL PHOTONIC CRYSTAL RESONATOR 有权
标题翻译： ZWEIDIMENSIONALER光电发生器KRISTALLRESONATOR
公开(公告)号：EP1666939A1
公开(公告)日：2006-06-07
申请号：EP04772076.8
申请日：2004-08-24
申请人： Kyoto University , Sumitomo Electric Industries, Ltd.
发明人： NODA, Susumu , ASANO, Takashi, 2-108 Katsura-Daini-Goudoushukusha , SONG, Bong-Shik , AKAHANE, Yoshihiro
IPC分类号： G02B6/12
CPC分类号： B82Y20/00 , G02B6/1225
摘要： The present invention intends to provide a two-dimensional photonic crystal resonator having a high Q-value. The slab-shaped body 21 is provided with cyclically arranged holes 22. The body 21 is divided into three areas 31-33 with the holes 22 arranged with cycle distances of a 1 in area 31 and a 2 in areas 32 and 33, which is smaller than a 1 . A waveguide 23 passing through the three areas is formed by linearly eliminating the holes 22. The waveguide 23 thus formed can propagate rays of light within a wavelength band that depends on the cycle distance of the holes 22. The cycle distance of the holes in the area 31 differs from that of the areas 32 and 33, and the wavelength band of the light propagating through the waveguide accordingly differs. Therefore, a ray of light whose wavelength is within the waveguide transmission wavelength band of the area 31 but outside of the waveguide transmission wavelength band of the other areas 32 and 33 will be confined within the waveguide of the area 31 and resonate therein. Thus, the waveguide in the area 31 functions as a resonator.
摘要翻译：本发明旨在提供具有高Q值的二维光子晶体谐振器。板状体21设置有周期性布置的孔22.主体21被分成三个区域31-33，其中孔22布置成具有区域31中的循环距离1和区域32和33中的2，小于1。穿过三个区域的波导23通过线性地消除孔22形成。如此形成的波导23可以在取决于孔22的循环距离的波长带内传播光线。孔中的循环距离区域31与区域32和33的区别不同，并且通过波导传播的光的波段相应地不同。因此，其波长在区域31的波导传输波长带内，但在其他区域32和33的波导传输波长带之外的光线将被限制在区域31的波导内并在其中谐振。因此，区域31中的波导用作谐振器。

9. 发明公开

EP4300731A1 TWO-DIMENSIONAL PHOTONIC CRYSTAL LASER 审中-实审
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.

10. 发明公开

EP4131675A1 TWO-DIMENSIONAL PHOTONIC CRYSTAL LASER 审中-实审
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.

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