Optical: systems and elements – Optical frequency converter – Parametric oscillator
Reexamination Certificate
2008-02-25
2008-11-18
Connelly-Cushwa, M. R. (Department: 2874)
Optical: systems and elements
Optical frequency converter
Parametric oscillator
C359S326000
Reexamination Certificate
active
07453626
ABSTRACT:
A four-wave mixing squeezed light source includes: a mixing medium having chi(3) non-linear characteristics including two atomic ground states coupled to each other by transitions through optically-excited states; a pump beam having a polarization and a frequency, said frequency being near the ground-to-excited atomic transition but far enough from the atomic transition such that the pump beam is substantially unabsorbed; and a probe beam having a polarization that is orthogonal with respect to the pump beam polarization, the probe beam having a frequency of the pump beam frequency plus or minus a frequency splitting of the two atomic ground states. The mixing medium, the pump beam and the probe beam interact to produce a phase conjugate beam having a polarization that is orthogonal to the pump beam polarization, such that the beams are non-degenerate with the pump beam, and the probe beam is amplified.
REFERENCES:
patent: 6867903 (2005-03-01), Imajuku et al.
patent: 2006/0285197 (2006-12-01), McKinstrie
patent: 2007/0230518 (2007-10-01), Watanabe
patent: 2008/0130097 (2008-06-01), McKinstrie
Boyer Vincent
Lett Paul D.
McCormick Colin F.
Connelly-Cushwa M. R.
Hunt, Jr. Ross F.
Stites & Harbison PLLC
The United States of America as represented by the Secretary of
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