Incoherent to coherent image converter
Abstract
Abstract An incoherent to coherent image conversion system comprises a converter unit having an axially aligned photocathode and electro-optic crystal, a source of coherent light (laser) directed through the crystal from one side and an incoherent light image input directed against the photocathode. The side of the crystal opposite from the coherent light source and facing the photocathode has a dielectric reflective coating which reflects the coherent light back through the crystal for a second pass. Photoelectrons from the photocathode produced by the incoherent image are accelerated and strike the mirrored side of the crystal to deposit a modulated charge pattern on the crystal for correspondingly changing its birefringence characteristic (Pockels effect). The coherent light passing through the crystal is phase modulated according to the image pattern and is directed to suitable optical processing apparatus for utilization.
Inventors
- 👤 O Ziemelis
- 👤 R Coppock
- 👤 H Sonnenberg
- 👤 P Mengers
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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