公开(公告)号：EP0643321A3

公开(公告)日：1995-11-22

申请号：EP94114116.0

申请日：1994-09-08

申请人： SONY CORPORATION

发明人： Yamaguchi, Takashi, c/o Sony Corporation ,  Yamada, Masahiro, c/o Sony Corporation

IPC分类号： G02F1/37 ,  G02F1/05

CPC分类号： G02F1/3558 ,  G02F1/37 ,  G02F1/377 ,  G02F2001/3548

摘要： A plurality of first electrodes are disposed on one of opposite surfaces of a nonlinear optical material substrate which is divided into single domains. Each of the first electrodes (11) is made of an electric conductor having a width which is equal to or smaller than half the width of a designed local inverted-polarization domain. A second electrode (12) is positioned on the other of the opposite surfaces in confronting relation to the first electrodes. A voltage is applied between the first and second electrodes thereby to produce local inverted-polarization domains in the nonlinear optical material substrate.

公开(公告)号：EP0592226A1

公开(公告)日：1994-04-13

申请号：EP93307997.2

申请日：1993-10-07

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Mizuuchi, Kiminori ,  Yamamoto, Kazuhisa

IPC分类号： G02F1/37 ,  G02B6/12

CPC分类号： G02F1/3558 ,  G02F1/03 ,  G02F1/3775 ,  G02F2001/3546 ,  G02F2001/3548 ,  G02F2201/346 ,  G02F2202/20 ,  Y10T29/49016

摘要： An optical wavelength converting device is provided with a LiTaO₃ substrate, a plurality of inverted-polarization layers periodically arranged in an upper surface of the LiTaO₃ substrate, and an optical waveguide crossing the inverted-polarization layers. The upper surface of the LiTaO₃ substrate is directed toward a -X-crystal axis direction. The inverted-polarization layers are formed by exchanging Ta⁺ ions of the LiTaO₃ substrate for H⁺ ions, and an extending direction of each inverted-polarization layer is inclined at an angle of ϑ degrees (6 ≦ ϑ ≦174) to the +C-crystal axis direction toward a -Y-crystal axis direction. The optical waveguide is formed by exchanging Ta⁺ ions of the LiTaO₃ substrate and the inverted-polarization layers for H⁺ ions to set a refractive index of the optical waveguide higher than that of the LiTaO₃ substrate. The optical waveguide extends in a +Y-crystal axis direction. Fundamental waves polarized in a transverse electric mode induce electric field directed in ±Y-crystal axis directions and are converted into second harmonic waves in the optical waveguide.

摘要翻译： 光波长转换装置设置有LiTaO 3衬底，周期性地布置在LiTaO 3衬底的上表面中的多个倒置极化层和与反极化层交叉的光波导。 LiTaO3基板的上表面朝向-X晶轴方向。 反相极化层通过将LiTaO 3衬底的Ta +离子交换为H +离子形成，并且每个反向偏振层的延伸方向以θ度的角度倾斜（6 < / = 174）朝向-Y晶轴方向的+ C晶轴方向。 通过交换LiTaO3衬底的Ta +和H +离子的反向偏振层来形成光波导，以使光波导的折射率高于LiTaO 3衬底的折射率。 光波导沿+ Y晶轴方向延伸。 在横向电模式中极化的基波感应在+/- Y晶轴方向上引导的电场，并在光波导中转换成二次谐波。

公开(公告)号：EP0549037A1

公开(公告)日：1993-06-30

申请号：EP92203898.9

申请日：1992-12-14

申请人： Akzo Nobel N.V.

发明人： Horsthuis, Winfried Henri Gerard

IPC分类号： G02F1/37

CPC分类号： G02F1/3558 ,  G02F1/37 ,  G02F2001/3548 ,  G02F2202/022 ,  G02F2202/07

摘要： A frequency doubling structure composed of an alternatingly poled NLO polymer is incorporated into an optically non-linear (NLO) polymeric material. This structure is made by forming a layer of a first NLO polymer, partially removing it by etching after it has been poled with the aid of a first electric field or not, such that a grating structure is formed composed of etched grooves in the polymer, and applying a layer of a second NLO polymer, such that the etched grooves are backfilled, after which the resulting alternating structure of the two NLO polymers is subjected either to a second electric field oppositely directed to the first one, or in the case of poling of the first polymer not yet having taken place, to two oppositely directed electric fields in succession. The second electric field is applied at a temperature which will not affect the poling of one NLO polymer effected by the first electric field. Further, a frequency doubler comprising an alternating structure of oppositely poled NLO polymer is provided.

摘要翻译： 一个交替极化的NLO聚合物组成的倍频结构被并入到光学非线性（NLO）聚合物材料。 这种结构通过形成第一NLO聚合物的层，部分地由它已被极化与第一电场或不借助于后蚀刻去除它制成，求做了光栅结构形成的聚合物中刻蚀槽组成， 和施加第二NLO聚合物的层，并检查该刻蚀槽进行回填，afterwhich两个NLO聚合物的所得的交替结构经受要么到第二电场方向相反的第一个，或在极化的情况下 所述第一聚合物的具有尚未发生，两个相反方向的电场连续。 第二电场在一个温度下施加whichwill不会影响由所述第一电场实现一个NLO聚合物的极化。 此外，提供了一个频率倍增器包括交替的极性相反的NLO聚合物的结构的。

公开(公告)号：EP0546891A1

公开(公告)日：1993-06-16

申请号：EP92403243.6

申请日：1992-12-01

申请人： THOMSON-CSF

发明人： Delacourt, Dominique ,  Papuchon, Michel ,  Lallier, Eric ,  Armani, Florence

IPC分类号： G02F1/29 ,  G02F1/37 ,  H01S3/109 ,  H01S3/11

CPC分类号： G02F1/292 ,  G02F1/3558 ,  G02F1/37 ,  G02F2001/3546 ,  G02F2001/3548 ,  H01S3/109 ,  H01S3/115

摘要： La présente invention propose un doubleur de fréquence comprenant un réseau d'indice optique commandable électriquement grâce à deux électrodes continues, le réseau étant créé par la présence de domaines de polarisation (+P) séparés périodiquement par des domaines de polarisation (-P), les électrodes permettant de compenser électrooptiquement les variations d'indice entre les domaines (+P) et les domaines (-P).

摘要翻译： 本发明提供了一种倍频器，其包括可以通过两个连续电极电驱动的光学折射率光栅，该光栅由存在由偏振域（-P）周期性地分离的偏振域（+ P）产生， 电极可以电光学地补偿畴（+ P）和结构域（-P）之间的指数变化。

公开(公告)号：EP0545595A1

公开(公告)日：1993-06-09

申请号：EP92310661.1

申请日：1992-11-23

申请人： HITACHI EUROPE LIMITED

发明人： Allam, Jeremy ,  Wagner, Mathias, Room 407 Crystal Mansion No. 11

IPC分类号： G02F1/35 ,  G02F1/37 ,  G02F3/02

CPC分类号： B82Y20/00 ,  G02F1/3534 ,  G02F1/3556 ,  G02F1/377 ,  G02F3/02 ,  G02F2001/01733 ,  G02F2001/01791 ,  G02F2001/3548

摘要： A non-linear optical device utilises laterally asymmetrical quantum dot structures (D1 - D5) that are tunable in terms of their lateral asymmetry by bias potentials (V1, V2) applied to laterally extending electrode structures (13, 14).
The structures may be optimized for second hamonic generation, optical rectification and optical bistable memory elements.

摘要翻译： 非线性光学器件利用横向不对称的量子点结构（D1-D5），它们通过施加到横向延伸的电极结构（13,14）的偏置电位（V1，V2）来侧向不对称地调节。 可以对第二谐波产生，光学整流和光学双稳态存储器元件优化结构。

公开(公告)号：EP0532969A2

公开(公告)日：1993-03-24

申请号：EP92114873.0

申请日：1992-08-31

申请人： FUJITSU LIMITED

发明人： Sawaki, Ippei, c/o FUJITSU LIMITED ,  Kurimura, Sunao, c/o FUJITSU LIMITED ,  Miura, Michio, c/o FUJITSU LIMITED

IPC分类号： G02F1/05 ,  G02F1/37 ,  H01L41/24 ,  H01G7/06

CPC分类号： H01G7/06 ,  G02F1/3558 ,  G02F1/3775 ,  G02F2001/3548 ,  H01L41/257 ,  Y10T29/42

摘要： A method for fabricating an SHG device by forming an inversion region (4) having a first polarization selectively in a ferroelectric substrate (1) that has a second, opposite polarization. The method comprises the steps of: applying a proton exchange process for exchanging cations in the ferroelectric substrate with protons selectively in correspondence to a region in which the inversion region is to be formed; providing electrodes (5, 6) on upper and lower major surfaces of the ferroelectric substrate; and growing the inversion region selectively in a direction vertical to the upper major surface of the ferroelectric substrate while applying a d.c. voltage to the electrode on the upper major surface of the ferroelectric substrate to induce an electric field acting in a direction coincident to a direction of said first polarization in said ferroelectric substrate.

摘要翻译： 一种用于通过在反转区形成（4）具有在强电介质选择性的第一偏振（1）那样制造SHG器件的衬底的方法具有第二，相反的偏振。 该方法包括以下步骤：将质子交换过程，用于选择性地在对应于其中反转区是要被形成的区域与质子在强电介质基片交换阳离子; 在铁电基板的上部和下部主表面提供的电极（6 5）; 和在垂直于铁电体基板的上主表面的方向上选择性地生长反转区域同时施加直流 电压对铁电体基板的上主表面上的电极，以诱导电场作用的底物在重合于在铁电体的所述第一偏振的方向的方向。

公开(公告)号：EP0520281A2

公开(公告)日：1992-12-30

申请号：EP92110062.4

申请日：1992-06-15

申请人： F. HOFFMANN-LA ROCHE AG

发明人： Buchecker, Richard ,  Chen, Xin-Hua ,  Fünfschilling, Jürg ,  Herr, Rolf-Peter ,  Schadt, Martin ,  Schmitt, Klaus

IPC分类号： G02F1/37 ,  C07C211/44

CPC分类号： C07D239/26 ,  C07C229/64 ,  G02F1/141 ,  G02F1/3775 ,  G02F2001/3548

摘要： Das optische Frequenzkonversionselement besitzt eine Wellenleiterschicht, die aus einem χ (2) -aktiven ferroelektrischen Flüssigkristall besteht. Das monomere oder polymere Flüssigkristallmaterial weist eine periodische Struktur auf, die die sog. Quasi-Phasenanpassung eines geführten Laserstrahles erlaubt. Die Periodenlänge der Struktur entspricht dabei dem Doppelten der Kohärenzlänge l c = η/Δβ des Materials, worin Δβ = β₀(2ω) - 2β₀(ω) mit ω = Kreisfrequenz der Fundamentalwelle, o = Mode nullter Ordnung und β = Ausbreitungskonstante der Mode.

摘要翻译： 光变换元件具有由chi（2）> - 活性铁电液晶组成的波导层。 单体或聚合物液晶材料具有允许传导激光束的所谓的准相位匹配的周期性结构。 在这种情况下，结构的周期长度对应于材料的相干长度lc = eta /DELTAβ的两倍，其中Δω=β0（ωω），ω=频率角 基本，0 =零级模式和β=模式的传播接触。

公开(公告)号：EP0365039A3

公开(公告)日：1990-10-17

申请号：EP89119535.6

申请日：1989-10-20

申请人： SONY CORPORATION

发明人： Tamada, Hitoshi ,  Saitoh, Masaki

IPC分类号： G02F1/37 ,  G02F1/35 ,  G02B6/12

CPC分类号： G02F1/3775 ,  G02F2001/3548 ,  G02F2001/374 ,  G02F2202/20

摘要： An optical waveguide apparatus arranged such that a Ta₂O₅-TiO₂ system amorphous thin film (12) is formed on a substrate (11). This optical waveguide apparatus can perform optical waveguiding at high efficiency. Also, an optical waveguide-type second harmonic generator of Cerenkov radiation type arranged such that the amorphous thin film is formed on a non-linear optical crystal substrate. This optical waveguide-type second harmonic generator can efficiently perform the confinement of light, whereby a fundamental wave of near-infrared rays can be received and a second harmonic wave radiated to the substrate side can be obtained with high efficiency. Further, in a second harmonic generator (SHG) in which the amorphous optical waveguide is formed on a surface of an LiNbO₃ non-linear optical crystal substrate (11) on which surface is formed a periodically-­poled region (10), this second harmonic generator can very efficiently generate a light having a wavelength of half of a semiconductor laser light of 0.8 micrometer band by selecting a relationship between the periodically-poled region cycle (Λ) and the thickness ( h ) of the optical waveguide.

公开(公告)号：EP3347954A1

公开(公告)日：2018-07-18

申请号：EP16775755.8

申请日：2016-09-12

申请人： University of Helsinki

发明人： VAINIO, Markku ,  ULVILA, Ville ,  HALONEN, Lauri ,  PHILLIPS, Christopher ,  PELTOLA, Jari

IPC分类号： H01S3/00

CPC分类号： G02F1/3775 ,  G02F1/3536 ,  G02F1/3544 ,  G02F1/3558 ,  G02F2001/3542 ,  G02F2001/3548 ,  G02F2203/56 ,  H01S3/0092

摘要： An apparatus for frequency comb generation comprises a component of second order nonlinearity, where the component is configured to interact with a laser beam or derivatives of the laser beam and thereby generate frequencies for the frequency comb. The apparatus comprises advantageously an optical manipulator, which both comprises the component but additionally is configured to introduce the beam or its derivatives in a repetitive or resonating manner to the component. The component is e.g. a monolithic or other solid optical resonator or microresonator comprising optical crystal and having said second order nonlinearity.

公开(公告)号：EP2564477B1

公开(公告)日：2018-05-30

申请号：EP11772657.0

申请日：2011-04-20

申请人： Mobius Photonics

发明人： KEATON, Gregory L. ,  LEONARDO, Manuel J. ,  BYER, Mark W. ,  MONRO, Kiyomi

IPC分类号： H01S3/30 ,  H01S3/067 ,  H01S3/0941 ,  H01S3/23 ,  H01S3/00 ,  H01S3/08 ,  G02F1/355 ,  G02F1/1347 ,  G02F1/35

CPC分类号： H01S3/302 ,  G02F1/3532 ,  G02F2001/3548 ,  H01S3/0092 ,  H01S3/0675 ,  H01S3/06754 ,  H01S3/08086 ,  H01S3/094003 ,  H01S3/0941 ,  H01S3/09415 ,  H01S3/1086 ,  H01S3/109 ,  H01S3/2316

摘要： A pulsed laser system may include a Raman fiber that is configured to act as multiple wavelength Raman laser. The fiber is configured to receive a pulsed input beam from an input source and convert the input beam to an output beam having narrow band outputs at first and second frequencies v1 and v2.