Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Laser beam path length difference detector, laser phase controller, and coherent optical coupler










Image Number 4 for United States Patent #7440478.

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.








 
 
  Recently Added Patents
System and method for efficient association of a power outlet and device
Optoelectronic semiconductor chip comprising a reflective layer
Caprazene as a novel compound and derivatives thereof, and caprazol as a novel compound and derivatives thereof
Data-conditioned encryption method
Verification of computer-executable code generated from a model
EpCAM as a reprogramming factor for non-pluripotent cells
Semiconductor device and manufacturing method
  Randomly Featured Patents
Geranium plant named `Areno`
Construction of shielded rooms using sealants that prevent electromagnetic and magnetic field leakage
System for facilitated analysis of PCI bus malfunction
Color image display system having an improved external magnetic shield
Endothelin receptor antagonists
Sofa
Electromagnetic shielding structure having radio wave-absorbing material
Alkaline dry cell
Compensation adjustment device for mechanical timepiece
Loading compartment for a motor vehicle