公开(公告)号：WO2003032038A1

公开(公告)日：2003-04-17

申请号：PCT/CA2002/001147

申请日：2002-07-23

Applicant: TERAXION INC.

Inventor： PAINCHAUD, Yves ,  MAILLOUX, Alain ,  CHOTARD, Hélène

IPC: G02B6/16

CPC classification number: G02B6/02152 ,  G02B6/02138 ,  G02B6/124 ,  G02B2006/12173

Abstract: A method and an apparatus (10) for recording optical gratings in a photosensitive medium (14) are provided. The invention uses a phase mask (16) in combination with a scanning of the recording light beam (20). The phase mask, or alternatively the photosensitive medium, is translated along a direction parallel to the scanning of the light beam, so that the period of the recorded grating may be locally adjusted. To ensure a proper recording efficiency over a large wavelength range, an appropriately selected wavefront curvature is provided in the light beam. The method of the invention is particularly advantageous for the recording of superimposed grating components in a photosensitive medium.

Abstract translation: 提供了一种用于在光敏介质（14）中记录光栅的方法和装置（10）。 本发明使用与记录光束（20）的扫描相结合的相位掩模（16）。 相位掩模或者光敏介质沿着平行于光束扫描的方向平移，从而可以局部地调整记录光栅的周期。 为了确保在大波长范围内的适当的记录效率，在光束中提供适当选择的波前曲率。 本发明的方法对于在光敏介质中记录叠加的光栅组件是特别有利的。

公开(公告)号：EP4305473A1

公开(公告)日：2024-01-17

申请号：EP22766027.1

申请日：2022-03-08

Applicant: Teraxion Inc.

Inventor： TREPANIER, François ,  BOUDREAU, Sylvain ,  MAILLOUX, Alain ,  BROCHU, Guillaume

IPC: G02B5/18 ,  G02B27/10 ,  H01S3/13

公开(公告)号：WO2022187945A1

公开(公告)日：2022-09-15

申请号：PCT/CA2022/050328

申请日：2022-03-08

Applicant: TERAXION INC.

Inventor： TREPANIER, François ,  BOUDREAU, Sylvain ,  MAILLOUX, Alain ,  BROCHU, Guillaume

IPC: G02B5/18 ,  G02B27/10 ,  H01S3/13

Abstract: A method of manufacturing a Volume Bragg Grating (VBG) is provided, comprising providing a cylindrical bulk medium made of a transparent glass material and having a central axis along a longitudinal direction, and inscribing an interference pattern in the cylindrical bulk medium. The interference pattern has a plurality of grating fringe elements distributed along a line parallel to the central axis. The method further includes rotating the cylindrical bulk medium about the central axis during said inscribing, thereby azimuthally extending the grating fringes elements. There is further provided a VBG manufactured according to such a method, the use of such a VBG in a CPA system of cladding-pumped fiber laser.