会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Laser with coupled optical waveguides
    • 激光与耦合光波导
    • US5311540A
    • 1994-05-10
    • US849077
    • 1992-04-28
    • Jean-Paul PocholleEric LallierMichel Papuchon
    • Jean-Paul PocholleEric LallierMichel Papuchon
    • H01S3/063H01S3/067H01S3/07H01S3/094H01S3/101H01S3/23H01S5/40H01S3/082
    • H01S3/0675H01S3/063H01S3/094003H01S3/07H01S3/101H01S3/2383H01S5/4025
    • The invention relates to lasers, and more particularly to solid state lasers such as neodymium on lithium niobate crystal lasers. The invention provides a structure with several juxtaposed optical waveguides (12) sufficiently close to each other laterally to be coupled laterally. In order to take into account the risks of inhomogeneity in the refractive indices or inaccuracies in the dimensions which would alter the distribution of the electromagnetic field of the propagation supermode in the coupled structure, it is proposed to act on the value of the index of propagation in each guide using an individual control (generally electrical). Because of the variation in index, individually controlled, phase differences in the laser wave between the different guides are produced and these phase differences react on the composition of the electromagnetic field defining the supermode. It is possible to go as far as modifying the directivity of the laser beam by this electrical control. The control is preferably achieved by electrodes (14) placed in the vicinity of each guide. The guides are made of an electro-optical material such as lithium niobate, and neodymium doping, for example, allows the laser effect to appear in the very interior of the guides.
    • PCT No.PCT / FR91 / 00715 Sec。 371日期:1992年4月28日 102(e)日期1992年4月28日PCT 1991年9月10日PCT公布。 公开号WO92 / 04748 本发明涉及激光器,更具体地涉及固态激光器,例如铌酸锂晶体激光器上的钕。 本发明提供了一种结构,其具有横向彼此充分靠近彼此的几个并置的光波导(12),以横向耦合。 为了考虑到在耦合结构中改变传播超模的电磁场分布的尺寸的折射率或不准确度的不均匀性的风险,提出了作用于传播指数的值 在每个指南中使用单独的控制(通常为电气)。 由于索引的变化,单独控制,产生不同导轨之间的激光波的相位差,这些相位差对定义超音节的电磁场的组成产生反应。 通过该电气控制可以改变激光束的方向性。 该控制优选地通过放置在每个引导件附近的电极(14)实现。 引导件由诸如铌酸锂的电光材料制成,并且钕掺杂例如允许激光效应出现在引导件的内部。
    • 6. 发明申请
    • Method of producing thick nonlinear optical gratings
    • 生产厚非线性光栅的方法
    • US20060139651A1
    • 2006-06-29
    • US10536696
    • 2003-11-24
    • Arnaud GrisardEric Lallier
    • Arnaud GrisardEric Lallier
    • G01J3/45
    • B82Y20/00G02F1/3501G02F1/3556G02F1/3558G02F1/3775G02F2001/3548
    • The field of the invention is that of thick nonlinear optical gratings used in particular in the fields of power lasers and high-rate telecommunications. The production of thick gratings poses major technological problems. The method proposed by the invention makes it possible either to obtain a high-quality nonlinear optical grating of substantial thickness, or to produce low-attenuation waveguides. This method applies most particularly to gratings based on semiconductor materials such as GaAs, which have great technical advantages. The core aspect of the invention is to prepare the surface of a thin first grating so that it is possible to deposit at least one layer of nonlinear material by epitaxy on this surface, the deposited layer maintaining the structural properties of the first grating, the combination of the initial deposition and of the successive layers constituting the final, thick grating.
    • 本发明的领域是特别在功率激光器和高速率电信领域中使用的厚非线性光栅的领域。 厚格栅的生产造成重大技术难题。 本发明提出的方法可以获得相当厚度的高品质非线性光栅,或者产生低衰减波导。 该方法最特别地适用于诸如GaAs之类的半导体材料的光栅,其具有很大的技术优点。 本发明的核心方面是制备薄的第一光栅的表​​面,使得可以通过在该表面上外延沉积至少一层非线性材料,沉积层保持第一光栅的结构特性,组合 的初始沉积以及构成最终的厚栅格的连续层。