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1. 发明申请

US20090285255A1 Two-Dimensional Photonic Crystal Surface Emitting Laser Light Source 有权
标题翻译：二维光子晶体表面发射激光光源
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。

2. 发明申请

US20130003768A1 PHOTONIC CRYSTAL LASER 有权
标题翻译：光电晶体激光
公开(公告)号：US20130003768A1
公开(公告)日：2013-01-03
申请号：US13581743
申请日：2011-03-01
申请人： Susumu Noda , Kyoko Kitamura , Yoshitaka Kurosaka , Kyosuke Sakai
发明人： Susumu Noda , Kyoko Kitamura , Yoshitaka Kurosaka , Kyosuke Sakai
IPC分类号： H01S3/16
CPC分类号： H01S5/105 , B82Y20/00 , H01S5/0267 , H01S5/1071 , H01S5/187 , H01S5/34333 , H01S2301/14 , H01S2301/203
摘要： A photonic crystal laser capable of producing a radially-polarized halo-shaped laser beam having a smaller width than conventional beams includes: an active layer; a ring-shaped photonic crystal including a plate-shaped base body on one side of the active layer, the base body having a number of modified refractive index areas of the same shape, the modified refractive index areas having a refractive index different from the base body and periodically arranged in the circumferential direction of a ring, and each of the modified refractive index areas being asymmetrically shaped with respect to an axis extending through the center of the modified refractive index area in the radial direction of the ring; a first and second electrode facing each other across the active layer and the ring-shaped photonic crystal; and a window provided in the second electrode capable of allowing passage of a laser light generated from the ring-shaped photonic crystal.
摘要翻译：能够产生具有比常规光束更小的宽度的径向偏振的卤素状激光束的光子晶体激光器包括：有源层; 在有源层的一侧包括板状基体的环状光子晶体，所述基体具有多个相同形状的改性折射率区域，所述改性折射率区域的折射率不同于所述基底并且每个修改的折射率区域相对于在环的径向方向上延伸穿过修改的折射率区域的中心的轴线不对称地成形; 第一和第二电极，跨越有源层和环形光子晶体彼此面对; 以及设置在第二电极中的能够允许从环形光子晶体产生的激光通过的窗口。

3. 发明申请

US20070217466A1 Two-dimensional photonic crystal surface light emitting laser 审中-公开
标题翻译：二维光子晶体表面发光激光器
公开(公告)号：US20070217466A1
公开(公告)日：2007-09-20
申请号：US11723170
申请日：2007-03-16
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： H01S5/00
CPC分类号： H01S5/18 , H01S5/0425 , H01S5/105 , H01S2301/203
摘要： A surface-emitting laser according to the present invention includes a laminated body between a first electrode 471 and a second electrode 472. The laminated body includes an active layer 43 and a two-dimensional photonic crystal 45. The first electrode 471 is ring shaped. A voltage is applied between the first and second electrodes 471 and 472 to supply an electric current into the active layer 43 and thereby cause an emission of light. Since the first electrode 471 is ring shaped, the light thereby generated has a ring-shaped field distribution within the two-dimensional photonic crystal 45. Due to this field distribution, a radially polarized laser beam having a ring-shaped cross section is emitted from the two-dimensional photonic crystal 45. The laser beam thus generated can be focused by a focusing lens to make its diameter smaller than the diffraction limit. Such a laser beam is suitable for optical pickups and other optical devices.
摘要翻译：根据本发明的表面发射激光器包括在第一电极471和第二电极472之间的层叠体。层叠体包括有源层43和二维光子晶体45.第一电极471是环形的。在第一和第二电极471和472之间施加电压以向有源层43提供电流，从而引起光的发射。由于第一电极471是环形的，所以由此产生的光在二维光子晶体45内具有环形场分布。由于该场分布，具有环形横截面的径向偏振激光束从二维光子晶体45.由此产生的激光束可以被聚焦透镜聚焦，使其直径小于衍射极限。这种激光束适用于光学拾取器和其它光学装置。

4. 发明授权

US08284814B2 Photonic crystal laser 有权
标题翻译：光子晶体激光器
公开(公告)号：US08284814B2
公开(公告)日：2012-10-09
申请号：US12230494
申请日：2008-08-29
申请人： Susumu Noda , Yoshitaka Kurosaka , Kyosuke Sakai , Eiji Miyai , Dai Ohnishi , Wataru Kunishi
发明人： Susumu Noda , Yoshitaka Kurosaka , Kyosuke Sakai , Eiji Miyai , Dai Ohnishi , Wataru Kunishi
IPC分类号： H01S3/08
CPC分类号： H01S5/10 , G02B2006/1213 , G11B7/0903 , G11B7/127 , H01S5/105 , H01S5/1215 , H01S5/1231
摘要： A laser capable of emitting multiple laser beams is provided. A two-dimensional photonic crystal laser according to the present invention has a laminated structure including an active layer, a first photonic crystal layer having a periodic distribution of refractive index with a first period, and a second photonic crystal layer having a periodic distribution of refractive index with a second period that differs from the first period. This two-dimensional photonic crystal laser can emit a main beam traveling in a direction perpendicular to the two-dimensional photonic crystals and side beams each traveling in a direction inclined with respect to the main beam. These beams can be used, for example, in a recording/reproducing device by means of an optical disk, the main beam being used for recording/reproducing information and the side beams for following up the track.
摘要翻译：提供了能够发射多个激光束的激光器。根据本发明的二维光子晶体激光器具有叠层结构，其包括有源层，具有第一周期的折射率的周期性分布的第一光子晶体层和具有折射率的周期性分布的第二光子晶体层第二期的指数与第一期不同。该二维光子晶体激光器可以发射在垂直于二维光子晶体的方向上行进的主光束和每个沿相对于主光束倾斜的方向行进的侧光束。这些光束例如可以通过光盘用于记录/再现装置中，主光束用于记录/再现信息，并且侧光束用于跟踪轨道。

5. 发明授权

US07936801B2 Two-dimensional photonic crystal surface emitting laser light source 有权
标题翻译：二维光子晶体表面发射激光光源
公开(公告)号：US07936801B2
公开(公告)日：2011-05-03
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： H01S5/00
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。

6. 发明授权

US07656925B2 Two-dimensional photonic crystal surface emitting laser 有权
标题翻译：二维光子晶体表面发射激光器
公开(公告)号：US07656925B2
公开(公告)日：2010-02-02
申请号：US12076914
申请日：2008-03-25
申请人： Koji Otsuka , Eiji Miyai , Kyosuke Sakai , Yoshitaka Kurosaka , Susumu Noda , Dai Ohnishi , Wataru Kunishi
发明人： Koji Otsuka , Eiji Miyai , Kyosuke Sakai , Yoshitaka Kurosaka , Susumu Noda , Dai Ohnishi , Wataru Kunishi
IPC分类号： H01S5/00
CPC分类号： H01S5/18 , H01S5/105 , H01S5/2009 , H01S2301/18
摘要： The two-dimensional photonic crystal surface emitting laser according to the present invention includes a number of main modified refractive index areas periodically provided in a two-dimensional photonic crystal and secondary structures each relatively located in a similar manner to each of the main modified refractive index areas. The location of the secondary structure is determined so that a main reflected light which is reflected by a main modified refractive index area and a secondary reflected light which is reflected by a secondary structure are weakened or intensified by interference.
摘要翻译：根据本发明的二维光子晶体表面发射激光器包括周期性地设置在二维光子晶体中的多个主要改性折射率区域和二次结构，其各自相对于每个主要改性折射率地区确定二次结构的位置，使得由主要改性折射率区域反射的主反射光和被二次结构反射的次级反射光被干涉减弱或增强。

7. 发明申请

US20080240179A1 Two-dimensional photonic crystal surface-emitting laser 有权
标题翻译：二维光子晶体表面发射激光器
公开(公告)号：US20080240179A1
公开(公告)日：2008-10-02
申请号：US12076914
申请日：2008-03-25
申请人： Koji Otsuka , Eiji Miyai , Kyosuke Sakai , Yoshitaka Kurosaka , Susumu Noda , Dai Ohnishi , Wataru Kunishi
发明人： Koji Otsuka , Eiji Miyai , Kyosuke Sakai , Yoshitaka Kurosaka , Susumu Noda , Dai Ohnishi , Wataru Kunishi
IPC分类号： H01S3/10
CPC分类号： H01S5/18 , H01S5/105 , H01S5/2009 , H01S2301/18
摘要： The two-dimensional photonic crystal surface emitting laser according to the present invention includes a number of main modified refractive index areas periodically provided in a two-dimensional photonic crystal and secondary structures each relatively located in a similar manner to each of the main modified refractive index areas. The location of the secondary structure is determined so that a main reflected light which is reflected by a main modified refractive index area and a secondary reflected light which is reflected by a secondary structure are weakened or intensified by interference.
摘要翻译：根据本发明的二维光子晶体表面发射激光器包括周期性地设置在二维光子晶体中的多个主要改性折射率区域和二次结构，其各自相对于每个主要改性折射率地区确定二次结构的位置，使得由主要改性折射率区域反射的主反射光和被二次结构反射的次级反射光被干涉减弱或增强。

8. 发明授权

US09048623B2 Photonic crystal laser 有权
标题翻译：光子晶体激光器
公开(公告)号：US09048623B2
公开(公告)日：2015-06-02
申请号：US13581743
申请日：2011-03-01
申请人： Susumu Noda , Kyoko Kitamura , Yoshitaka Kurosaka , Kyosuke Sakai
发明人： Susumu Noda , Kyoko Kitamura , Yoshitaka Kurosaka , Kyosuke Sakai
IPC分类号： H01S5/18 , H01S5/10 , B82Y20/00 , H01S5/187 , H01S5/026 , H01S5/343
CPC分类号： H01S5/105 , B82Y20/00 , H01S5/0267 , H01S5/1071 , H01S5/187 , H01S5/34333 , H01S2301/14 , H01S2301/203
摘要： A photonic crystal laser capable of producing a radially-polarized halo-shaped laser beam having a smaller width than conventional beams includes: an active layer; a ring-shaped photonic crystal including a plate-shaped base body on one side of the active layer, the base body having a number of modified refractive index areas of the same shape, the modified refractive index areas having a refractive index different from the base body and periodically arranged in the circumferential direction of a ring, and each of the modified refractive index areas being asymmetrically shaped with respect to an axis extending through the center of the modified refractive index area in the radial direction of the ring; a first and second electrode facing each other across the active layer and the ring-shaped photonic crystal; and a window provided in the second electrode capable of allowing passage of a laser light generated from the ring-shaped photonic crystal.
摘要翻译：能够产生具有比常规光束更小的宽度的径向偏振的卤素状激光束的光子晶体激光器包括：有源层; 在有源层的一侧包括板状基体的环状光子晶体，所述基体具有多个相同形状的改性折射率区域，所述改性折射率区域的折射率不同于所述基底并且每个修改的折射率区域相对于在环的径向方向上延伸穿过修改的折射率区域的中心的轴线不对称地成形; 第一和第二电极，跨越有源层和环形光子晶体彼此面对; 以及设置在第二电极中的能够允许从环形光子晶体产生的激光通过的窗口。

9. 发明授权

US08300672B2 Two-dimensional photonic crystal laser 有权
标题翻译：二维光子晶体激光器
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。

10. 发明申请

US20110188526A1 TWO-DIMENSIONAL PHOTONIC CRYSTAL LASER 有权
标题翻译：二维光子晶体激光
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。

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