Holographic recording and related reading process
    1.
    发明授权
    Holographic recording and related reading process 失效
    全息记录和相关阅读过程

    公开(公告)号:US4592618A

    公开(公告)日:1986-06-03

    申请号:US394723

    申请日:1982-07-02

    CPC分类号: G03H1/0248 Y10S359/90

    摘要: A holographic process is provided for recording-reading by means of index strata in the volume of a photoexcitable storage medium. This process consists in causing two beams to interfere in this medium during two successive writing steps by using writing radiations of different wavelengths. The reading of this medium is then effected by means of a third coherent radiation having for wave vector in the medium a linear combination of the wave vectors of said writing radiations.

    摘要翻译: 提供全息处理,用于通过光可变存储介质的体积中的索引层进行记录读取。 该过程包括通过使用不同波长的写入辐射,在两个连续写入步骤期间使两束波束干扰该介质。 然后通过第三相干辐射来实现该介质的读取,该第三相干辐射在介质中具有用于所述写入辐射的波矢的线性组合的波矢。

    Photorefractive crystal interferometric device for measuring an angular
rotational speed
    3.
    发明授权
    Photorefractive crystal interferometric device for measuring an angular rotational speed 失效
    用于测量角度旋转速度的光折射晶体干涉仪

    公开(公告)号:US4659223A

    公开(公告)日:1987-04-21

    申请号:US667164

    申请日:1984-11-01

    IPC分类号: G01C19/64 G01C19/72 G01P3/36

    CPC分类号: G01C19/72 G01C19/64

    摘要: An interferometric device for measuring an angular rotational speed comprising an amplifying photo refractive crystal placed in the path of optical guide means forming a closed loop. Two signal waves penetrate into said crystal so as to obtain two contrarotating waves of different optical frequencies and of amplitudes restored by amplification in the crystal, moving in said closed loop.

    摘要翻译: 一种用于测量角度旋转速度的干涉仪,包括放置在形成闭环的光导装置的路径中的放大光折射晶体。 两个信号波穿透到所述晶体中,以便获得在所述闭环中移动的不同光学频率和通过放大在晶体中恢复的振幅的两个反转波。

    Light source with stabilized broadband and associated optical fiber
gyroscope
    4.
    发明授权
    Light source with stabilized broadband and associated optical fiber gyroscope 失效
    具有稳定宽带和相关光纤陀螺仪的光源

    公开(公告)号:US5894488A

    公开(公告)日:1999-04-13

    申请号:US793745

    申请日:1997-03-12

    IPC分类号: H01S3/067 H01S3/105 H01S3/07

    摘要: The invention relates to a broadband light source including an amplifying guide structure (1). The light source includes a device (45) of exciting the guide structure (1). The stimulated guide structure (1) emits light (7, 8) that accepts strong spatial coherence and weak time coherence. The light (7) is transmitted forwards (2) having a spontaneous emission spectrum. The light source also includes a rear mirror (5), reflecting only for a narrower range of wavelengths than the spontaneous emission spectrum and produces emission (E) forwards (2) with an emission spectrum controlled around an average wavelength. The rear mirror is inserted between the excitation means and the guide structure.

    摘要翻译: PCT No.PCT / FR96 / 01090 Sec。 371日期1997年3月12日 102(e)1997年3月12日PCT PCT 1996年7月12日PCT公布。 公开号WO97 / 03488 日期1997年1月30日本发明涉及一种包括放大引导结构(1)的宽带光源。 光源包括激励引导结构(1)的装置(45)。 刺激的引导结构(1)发射光(7,8),其接受强的空间相干性和弱的时间相干性。 光(7)向前(2)发射,具有自发发射光谱。 光源还包括后反射镜(5),其仅反射比自发发射光谱更窄的波长范围,并且以围绕平均波长控制的发射光谱产生向前(E)的发射(E)。 后视镜插入在激励装置和引导结构之间。

    Device for illuminating an electro-optical medium for recording
holograms in real time
    8.
    发明授权
    Device for illuminating an electro-optical medium for recording holograms in real time 失效
    用于照亮用于实时记录全息图的电光介质的装置

    公开(公告)号:US4542955A

    公开(公告)日:1985-09-24

    申请号:US504733

    申请日:1983-06-16

    CPC分类号: G02F1/0338 G03H1/04

    摘要: The invention relates to electro-optical media which make it possible to record holograms in real time. It consists in using a lamina of a selected material such as bismuth-silicon oxide, this lamina being subjected to a transverse electric field perpendicular to the fringes of the hologram to be inscribed, and in illuminating this lamina with a light beam which is not coherent with the two object and reference beams which interfere within this lamina.

    摘要翻译: 本发明涉及可以实时记录全息图的电光介质。 它包括使用诸如铋 - 氧化硅的选定材料的薄层,该薄片受到垂直于要刻划的全息图的条纹的横向电场,并且用不相干的光束照亮该薄片 其中两个物体和参考光束干涉在该层内。

    Ring interferometer device and its application to the detection of
non-reciprocal effects
    9.
    发明授权
    Ring interferometer device and its application to the detection of non-reciprocal effects 失效
    环形干涉仪装置及其应用于检测不可逆效应

    公开(公告)号:US4480915A

    公开(公告)日:1984-11-06

    申请号:US212435

    申请日:1980-12-03

    IPC分类号: G01C19/72 G01B9/02 G01C19/64

    CPC分类号: G01C19/721

    摘要: The invention relates to ring interferometers. It aims at making strictly reciprocal a ring interferometer of any known structure, by means of a mode filter which allow a particular mode to be selected among all the modes likely to be propagated in the loop and to arrive at the detection device; this filtering is carried out by a mode filter comprising for example a screen pierced with a hole or an integrated wave-guide or optical fiber portion which are advantageously monomode.

    摘要翻译: 本发明涉及环形干涉仪。 它旨在通过模式滤波器来制造任何已知结构的严格互惠的环形干涉仪,该模式滤波器允许在可能在循环中传播的所有模式中选择特定模式并到达检测装置; 这种滤波是通过一个模式滤波器进行的,该模式滤波器包括例如穿孔的屏幕或有利地是单模的集成波导或光纤部分。