公开(公告)号：US20030072003A1

公开(公告)日：2003-04-17

申请号：US09975836

申请日：2001-10-11

Applicant: TERAXION INC.

Inventor： Francois Trepanier

IPC: G01B009/02

CPC classification number: G02B5/1857

Abstract: A system and a method for recording interference fringes in a photosensitive medium. Two light beams are guided along different light paths to impinge on a photosensitive medium, where they interfere to produce the interference fringes. One of the beam is reflected along its path on a delay mirror forming a fixed angle null with respect to the plane of the photosensitive medium. Both the photosensitive medium and delay mirror are translated with respect to the light paths of the two beams, thereby recording the interference fringes all along the medium. The angle null is chosen so that the interference pattern is fixed relative to the photosensitive medium along its length.

Abstract translation: 用于在光敏介质中记录干涉条纹的系统和方法。 两个光束沿着不同的光路被引导以照射到感光介质上，在这些光敏介质上它们干涉以产生干涉条纹。 光束中的一个沿着其路径反射在延迟反射镜上，相对于感光介质的平面形成固定角度φi。 感光介质和延迟镜都相对于两个光束的光路平移，从而沿着介质记录干涉条纹。 角度phi被选择为使得干涉图案相对于沿其长度的光敏介质是固定的。

公开(公告)号：US20040008413A1

公开(公告)日：2004-01-15

申请号：US10431343

申请日：2003-05-06

Applicant: Teraxion Inc.

Inventor： Francois Trepanier ,  Michel Poulin

IPC: G02B027/64

CPC classification number: G02B5/1871 ,  G02B5/32 ,  G02B27/60

Abstract: A method for manufacturing complex gratings masks having phase shifted regions and a holographic set-up for making the same are disclosed. The method, which can be easily automated, allows to produce arbitrary phase shift in holographically recorded gratings with high precision. In a preferred embodiment, the phase is controlled by a fringe locking system with a movable locking detector and a phase measuring device such as a camera for example, thereby allowing to provide a real-time phase locking and a real-time calibration of the set-up.

Abstract translation: 公开了一种用于制造具有相移区域的复合光栅掩模和用于制造其的全息设备的方法。 该方法可以容易地自动化，可以在高精度的全息记录光栅中产生任意的相移。 在优选实施例中，该相位由具有可移动锁定检测器和相位测量装置（例如相机）的边缘锁定系统控制，从而允许提供该组的实时相位锁定和实时校准 -向上。