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OPTICAL AMPLIFICATION MODULATION SYSTEM AND OPTICAL RESPONSE ACCELERATING SYSTEM

外国特許コード F170008940
整理番号 (S2015-0717-N0)
掲載日 2017年1月20日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2016JP060390
国際公開番号 WO 2016159077
国際出願日 平成28年3月30日(2016.3.30)
国際公開日 平成28年10月6日(2016.10.6)
優先権データ
  • 特願2015-072479 (2015.3.31) JP
発明の名称 (英語) OPTICAL AMPLIFICATION MODULATION SYSTEM AND OPTICAL RESPONSE ACCELERATING SYSTEM
発明の概要(英語) This optical amplification modulation system (11) is provided with a photorefractive element (1), and a photoirradiation unit (12) for radiating first light (B4) and second light (B5) which interfere with each other onto the photorefractive element (1) and causing the first light (B4) and the second light (B5) to interfere, the optical amplification modulation system (11) characterized in that the photoirradiation unit (12) is provided with a light intensity modulator (18), the light intensity modulator (18) modulates only the second light (B5), and the degree of intensity of the second light (B5) varies periodically in time in response to whether interference is occurring or not occurring.
従来技術、競合技術の概要(英語) BACKGROUND ART
One type of material, known to have good charge transport property and, as a case of an application of the photorefractive effect described below. Photorefractive effect is, 1 is one of a nonlinear optical effect, the light in a material refractive index changes in a phenomenon. Describing the mechanism of the effect of the photorefractive material. 2 Conductive and light-order nonlinear optical characteristics of the laser light 2 in the medium by causing interference and the interference fringes are formed. The bright portion of the interference fringes to generate charge carriers by light excitation, the externally applied electric field in the medium by moving the positive charge carriers, are trapped in the dark. As a result, the bright portion of the negative, the positive to the dark part, the electrification charge of the periodic density non-uniformity, an electric field is formed in the space. The electric field in this space, the next 1 in the electro-optical effect caused by the Pockels effect, a periodic refractive index grating is formed. The refractive index between the optical interference fringes in space in order to generate a phase difference of φ, asymmetric energy transfer between the light waves 2 is observed, the optical amplification (optical gain) is obtained.
By using such a photorefractive effect, a phase conjugate or, imaging from the distorting medium, the real-time holography, the hologram-multiplexing, the display 3D, printer 3D, as well as optical amplification, an optical neural network a non-linear optical information processing, pattern recognition, optical limiting, high density optical data storage or the like are expected to be applied to.
The effect of the photorefractive material as described above, conventionally, a lithium niobate (LiNbO3) and the like have been used as the inorganic material (for example, Non-Patent Document 1 and Non-Patent Document 2 reference). However, the inorganic crystal material, it is difficult to reduce the thickness of the element, in addition, the externally applied electric field strength is required. Therefore, a problem with the reliability of the device. In addition, a wide area and it is difficult to be applied to a device, a large problem in practical use.
Therefore, in recent years, an organic substance has been the development of a photorefractive material. Is the organic photorefractive material, as compared with the inorganic photorefractive material is a number of advantages. Has the advantage that, facilitating optimization of the composition ratio, in addition to the high processability, for example, a large optical non-linearities, low dielectric constant, low cost, light weight, flexibility and the like. In addition, be desired depending on the application to other important properties of the obtained, long shelf life of the recording data, optical quality, and is thermally stable. Is the organic photorefractive material, advanced information communication technology is becoming an important material. Among them, a carbazole (for example, see Patent Document 1), and triphenylamine is known.
A moving image recording, and reproducing apparatus, a high-speed data storage devices such as holographic devices to be applied to obtain a sufficient display performance, a remarkable improvement in the response is required. TO RELATED APPLICATION333
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NATIONAL UNIVERSITY CORPORATION KYOTO INSTITUTE OF TECHNOLOGY
  • 発明者(英語)
  • TSUTSUMI NAOTO
  • KINASHI KENJI
  • MASUMURA KENTO
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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