Device for quantum optical amplification
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United States of America Patent
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Aug 21, 2001
Grant Date -
N/A
app pub date -
Dec 15, 1998
filing date -
Mar 3, 1998
priority date (Note) -
Expired
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Abstract
The invention relates to devices for the quantum-optical amplification of modulated light, in particular in optical free-space communications systems. In the process a light beam (4) is conducted through a plurality of adjoining crystals (66), (68), (70), which are delimited from each other by means of polarization-selectively reflecting layers (104), (106). The light beam (4) is repeatedly reflected at the edge areas of the crystals into quarter-wave plates (86), (88), (90), (92), (94), and in the process its polarization is respectively rotated by 90 degrees.
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