Title:
レーザー光路長差検出装置、レーザー位相制御装置並びにコヒーレント光結合装置
Document Type and Number:
Japanese Patent JP4786540
Kind Code:
B2
Abstract:
Provided are a small-sized, low-cost, and easy-to-use laser optical path length difference detecting device, a laser optical path length difference detecting device, and a coherent optical coupling device. The laser optical path length difference detecting device detects an optical path length difference between propagation paths of a first laser beam (1) and a second laser beam (2), which are mutually coherent when the beams are propagated through two arbitrary optical paths of a plurality of laser beam optical paths. The laser optical path length difference detecting device is provided with an optical path length difference variable means (4) for changing the optical path length difference between the first laser beam (1) and the second laser beam (2), a wavefront inclination generating means (5) for inclining a wavefront of at least one of the first laser beam (1) and the second laser beam (2), and a two-dimensional detector (6) for detecting the interference light intensity distribution of the first laser beam (1) and the second laser beam (2) which have passed through the wavefront inclination generating means.
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Inventors:
Jiro Suzuki
Yoshihito Hirano
Yutaka Esaki
Ya Horiuchi
Yoshihito Hirano
Yutaka Esaki
Ya Horiuchi
Application Number:
JP2006534966A
Publication Date:
October 05, 2011
Filing Date:
September 13, 2004
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H01S3/00; G01J9/02
Domestic Patent References:
| JPH11340555A | 1999-12-10 | |||
| JPH06160117A | 1994-06-07 | |||
| JPS61230002A | 1986-10-14 | |||
| JP2000323774A | 2000-11-24 | |||
| JP2000056280A | 2000-02-25 | |||
| JP2003075260A | 2003-03-12 |
Attorney, Agent or Firm:
Michiharu Soga
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order
Hidetoshi Furukawa
Suzuki Kenchi
Kajinami order