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
Methods and systems for flicker correction
Crystalline form of zofenopril calcium
Reference circuit with curvature correction using additional complementary to temperature component
Methods for determining decoding order in a MIMO system with successive interference cancellation
Package for a medicinal product
Light emitting device
Method and apparatus for reacquiring lines in a cache
  Randomly Featured Patents
Synchronous parallel emulation and discrete event simulation system with self-contained simulation objects and active event objects
Method of making stress relieved count probe
Acceleration and speed control circuit for jet engine accessory equipment
Method for manufacturing graphene electronics
Preparation and method for the treatment and prevention of dimentia disorders
Double-structured tissue implant and a method for preparation and use thereof
Rail car identification apparatus
Method and device for data processing in a communication network
Pickling (etching) process and device
Positive control lower folder