Optical Beam Phase-Conjugation and Electromagnetic Scattering Process with Intense Fields

1988 ◽  
Author(s):  
Robert W. Hellwarth
Keyword(s):  
Electromagnetic Scattering ◽  
Phase Conjugation ◽  
Optical Beam ◽  
Scattering Process ◽  
Intense Fields

Optical Limiting in a Photorefractive Polymer

1997 ◽  
Vol 479 ◽  
Author(s):  
A. Grunnet-Jepsen ◽  
C. L. Thompson ◽  
W. E. Moerner
Keyword(s):  
Phase Conjugation ◽  
Optical Limiting ◽  
High Gain ◽  
Optical Beam ◽  
Device Application ◽  
Photorefractive Polymers ◽  
Optical Limiter ◽  
Photorefractive Polymer ◽  
Salient Features

AbstractOptical limiting has been suggested as a possible device application of high gain photorefractive (PR) polymers. The principle of operation relies on the existence of amplified scattering (beam fanning) to deplete the intensity of the incident coherent optical beam. The newest photorefractive polymers show a combination of high gain and reasonable speed, and we show how these materials behave as a beam fanning optical limiter and as a limiter based on self-pumped phase conjugation. A prototype cascaded beam fanning device is demonstrated and its salient features are discussed.

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