Resources Contact Us Home
Wave mode converter

Image Number 4 for United States Patent #4175830.

Mode converter for electromagnetic, light or infrared waves. This mode converter converts particle non-confining modes to particle confining modes. In a confining mode wave beam the phase of the wave with respect to time at a point of the beam having a given azimuth with respect to the beam axis is proportional to this azimuth. Two types of mode converter are disclosed. In the first type, the wave passes through a block of transparent isotropic material the thickness of which is proportional to the azimuth around the beam axis. In the second type, the converter is formed with triangular or sectoral plates of birefringent material and in each plate the slow and fast axes are given an adequate orientation.

  Recently Added Patents
Method and system for accomplishing user equipment purge
Testing apparatus and testing method for telephone apparatus
Surface-emitting laser light source using two-dimensional photonic crystal
Pill identification and counterfeit detection method
Tone enhancement bracket
Probe for ultrasound diagnostic apparatus
Apparatus for focus beam analysis of high power lasers
  Randomly Featured Patents
System for providing mobile data security
Vertical film formation apparatus and method for using same
Reduction of positional errors in a four point probe resistance measurement
Methods of forming a microlens array over a substrate employing a CMP stop
Fatigue test apparatus
Hand-worn dispenser
Wireless energy transfer across variable distances
S-adenosyl-L-methionine synthetase promoter and its use in expression of transgenic genes in plants
Method of optimizing the coverage area of a sensor
Substituted nitro and cyanoguanidines