Optical: systems and elements – Optical amplifier – Beam combination or separation
Reexamination Certificate
2007-03-20
2007-03-20
Keith, Jack (Department: 3663)
Optical: systems and elements
Optical amplifier
Beam combination or separation
C359S300000, C359S338000, C359S347000
Reexamination Certificate
active
10866201
ABSTRACT:
A thermal nonlinear cell and method. The cell includes a substantially planar nonlinear medium and a mechanism for removing thermal energy from the medium in a direction substantially orthogonal to said medium. In one embodiment, the mechanism for removing thermal energy is a thermally conductive window mounted adjacent to the medium. Preferably, the mechanism includes plural thermally conductive windows between which the nonlinear medium is disposed. In the best mode, the windows are sapphire and the nonlinear medium is a fluid. The windows and the medium are transmissive with respect to first and second beams that interfere with each other and create an interference pattern in the cell. The interference pattern is sampled by a sampling hologram created within the multiple layers of the medium. The interference pattern is used via a sampling hologram to create a phase conjugate of a signal beam. The windows move thermal energy from the medium in a direction transverse to the longitudinal axis of the medium. This energy is then removed by heat sinks disposed at the ends of the stack of windows. In an alternative embodiment, the mechanism for removing thermal energy includes first and second mirrors mounted adjacent to the medium in a substantially parallel face-to-face relation. Preferably, the mirrors are heat exchangers such as slot-jet impingement coolers. In this embodiment, a transparent window is disposed between the mirrors and the nonlinear medium is disposed between the mirrors and the window. The mirrors are adapted to reflect first and second beams into the medium where they interfere to provide the interference pattern needed to create a phase conjugate beam.
REFERENCES:
patent: 4175835 (1979-11-01), Kuhn, Jr.
patent: 4253739 (1981-03-01), Carlson
patent: 4408833 (1983-10-01), Gowan
patent: 4762397 (1988-08-01), Pepper
patent: 4877312 (1989-10-01), Huignard et al.
patent: 5365538 (1994-11-01), Tumminelli et al.
patent: 5726795 (1998-03-01), Betin
patent: 6288833 (2001-09-01), Kasamatsu
patent: 6339605 (2002-01-01), Vetroveck
patent: 6347109 (2002-02-01), Beach et al.
patent: 6778319 (2004-08-01), Chavez-Pirson et al.
patent: 2002/0021486 (2002-02-01), Lange et al.
A.A. Betin, “Phase Conjugation Based On Thermal Nonlinearity,” presented at Nonlinear Optics Materials, Fundamentals, and Applications Conference, Maui, Hawaii, Jul. 1996.
A.A. Betin, S.C. Matthews, and M.S. Mangir, “Phase Conjugation of Depolarized Light with a Loop PC”, Nonlinear Optics: Materials, Fundamentals, and Applications Conference, Kauai, Hawaii, Jul. 1998.
O.L. Antipov, A.A. Betin, E.A. Zhukov and S.G. Turgenev, “Four-wave Interaction of Middle-Infrared Radiation in Media with a Thermal Nonlinearity,” Sov. J. of Quantum Electronics, 19, Nov. 1989, p. 1465.
A.A. Betin and A.V. Kirsanov, “Selection of a Phase-Conjugate Wave in an Oscillator Based on a Four-Wave Interaction with Feedback in an Extended Nonlinear Medium,” Quantum Electronics, 24, 1994, p. 219.
K. Ergakov and V. Yarovoy, “Investigation of Energy and Adaptive Capabilities of Four-Wave Mixing Scheme with a Feedback (FWMF) on YAG:Nd-active Medium in Single and Repetitive Pulse Generation Regimes,” in Phase Conjugation and Adaptive Optics, SPIE Proceedings, vol. 2771, 1996, p. 75.
O.L. Antipov et al: “Four-Wave Interaction of Middle-Infrared Radiation in Media with a Thermal Nonlinearity” Sov. J. Quantum Electron., vol. 19, No. 11, Nov. 1989, pp. 1465-1473, XP009055036 * p. 1471, col. 2, line 26—p. 1472, col. 1, line 29; Fig. 4.
Betin Alexander A.
Davis N. Peter
Ichkhan Joseph J.
Alkov Leonard A.
Bolda Eric
Keith Jack
Raytheon Company
Vick Karl A.
LandOfFree
Conductively cooled liquid thermal nonlinearity cell for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Conductively cooled liquid thermal nonlinearity cell for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conductively cooled liquid thermal nonlinearity cell for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3761451