Optical: systems and elements – Optical amplifier – Particular active medium
Reexamination Certificate
2011-07-26
2011-07-26
Bolda, Eric (Department: 3663)
Optical: systems and elements
Optical amplifier
Particular active medium
C372S037000, C372S043010, C372S069000
Reexamination Certificate
active
07986454
ABSTRACT:
An apparatus and method for tunable generation of terahertz waves at room temperatures are provided. The apparatus for tunable terahertz generation comprises: (A) a terahertz antenna further comprising a magnon gain medium; (B) a means for generating the nonequilibrium magnons in the magnon gain medium; wherein the terahertz antenna is configured to emit generated terahertz photons; and (C) a means for tuning frequency of terahertz photons emitted by the terahertz antenna. The magnon gain medium is selected from the group consisting of: {a ferromagnetic semiconductor; a dilute magnetic semiconductor (DMS); a half-metallic ferromagnet (HMF); and a ferromagnetic conductor, with a gap in the density of states of the minority electrons around the Fermi energy}.
REFERENCES:
patent: 3822410 (1974-07-01), Madey
patent: 3986194 (1976-10-01), Masumoto et al.
patent: 4626800 (1986-12-01), Murakami et al.
patent: 4679023 (1987-07-01), Nelson
patent: 4914665 (1990-04-01), Sorin
patent: 6111416 (2000-08-01), Zhang et al.
patent: 6230038 (2001-05-01), von Gutfeld et al.
patent: 6365286 (2002-04-01), Inomata
patent: 6614827 (2003-09-01), Mooradian
patent: 6912148 (2005-06-01), Hannah et al.
patent: 6988058 (2006-01-01), Sherwin et al.
patent: 2001/0031547 (2001-10-01), Ohno et al.
patent: 2002/0058120 (2002-05-01), Uchida et al.
patent: 2003/0021908 (2003-01-01), Nickel et al.
patent: 2004/0094801 (2004-05-01), Liang et al.
patent: 2005/0242287 (2005-11-01), Hakimi
patent: 2006/0060815 (2006-03-01), Punnoose
patent: 2006/0088324 (2006-04-01), Fujimoto et al.
patent: 2006/0108619 (2006-05-01), Yoshida et al.
patent: 2006/0238191 (2006-10-01), Saito
patent: 2006/0292704 (2006-12-01), Bailleul et al.
V. G. Vaks, A. I. Larkin, and S. A. Pikin, “Spin Waves and Correlation Functions in a Ferromagnetic”, Zh. Eksp. Teor. Fiz. (U.S.S.R.) 53, 1089-1106 (Sep. 1967), p. 647-655.
Y. Noda and Y. Ishikawa, “Spin Waves in Heusler Alloys Pd2MnSn and Ni2MnSn”, Journal of the Physical Society of Japan, Mar. 3, 1976, p. 690-698, vol. 40—No. 3, Japan.
Y. Noda and Y. Ishikawa, “Spin Dynamics in a Heusler Alloy Pd2MnSn”, Journal of the Physical Society of Japan, Mar. 3, 1976, p. 699-705, vol. 40—No. 3, Japan.
K. Tajima, Y. Ishikawa, and P. J. Webster, “Spin Waves in a Heusler Alloy Cu2MnAl”, Journal of the Physical Society of Japan, Aug. 2, 1977, p. 483-489, vol. 43—No. 2, Japan.
S. Wurmehl, G. H. Fecher, H. C. Kandpal, V. Ksenofontov, C. Felser, H.J. Lin, and J. Morais, “Geometric, electronic, and magnetic structure of CO2FeSi: Curie temperature and magnetic moment measurements and calculations”, Physical Review B, 2005, p. 184434, vol. 72.
U.S. Appl. No. 12/290,527: Office Action—Election/Restrictions dated Oct. 1, 2010.
U.S. Appl. No. 12/290,527: Office Action dated Dec. 3, 2010.
Korenblit et al. “Generation of High-Frequency Magnons by NonEquilibrium Electrons Polarized Opposite to the Direction of Magnetization”, Soviet Physics, JETP, vol. 46(6), Dec. 1977.
Korenblit et al. “High Frequency Magnon Generation by NonEquilibrium Electrons and the Instability of the Magnon System”, Physics Letters, vol. 64A, No. 3, pp. 307-330, Dec. 1977.
Tankhilevich et al. “Terahertz Imaging and Spectroscopy: Advances in Power and Tunability”, Proceedings of the 2010 World Molecular Imaging Congress, vol. 12, Suppl 2, pp. S1340, Dec. 2010.
U.S. Appl. No. 11/481,197: Office Action—Election/Restrictions dated Jun. 5, 2007.
U.S. Appl. No. 11/481,197: Office Action dated Aug. 31, 2007.
U.S. Appl. No. 11/481,197: Notice of Allowance and Fee(s) Due dated Feb. 22, 2008.
U.S. Appl. No. 11/496,889: Notice of Allowance and Fee(s) Due dated Jun. 30, 2008.
U.S. Appl. No. 11/701,284: Office Action dated Mar. 6, 2008.
U.S. Appl. No. 11/701,284: Notice of Allowance and Fee(s) Due dated Oct. 6, 2008.
U.S. Appl. No. 11/799,937: Notice of Allowance and Fee(s) Due dated Oct. 9, 2008.
M. J. Lisowski, “Electron and Magnetisation Dynamics in Metals Studied by Time-Resolved Photoemission”, Dissertation Abstract, Freie Universitat Berlin, Jan. 2006, Berlin Germany.
I. E. Radu, “Ultrafast Electron, Lattice and Spin Dynamics on Rare-Earth Metal Surfaces”, Thesis, Freie Universitat Berlin, Mar. 2006, Berlin Germany.
R. Srivastava, “Optically Detected Terahertz Resonance Spectroscopy of Semiconductor Nanostructures”, Thesis, Rice University, Apr. 2005, Houston Texas.
M. Belhadi; A. Khater, “Spin Wave Modes and Magnon Scattering at Surface Nanostructure on 2D Heisenberg Ferromagnets”, Surface Review and Letters, 2004, p. 99-109, vol. 11, No.
M. Tsoi; A. G. M Jansen; J. Bass; W.-C. Chiang; V. Tsoi; P. Wyder, “Generation and Detection of Phase-Coherent Current-Driven Magnons in Magnetic Multilayers”, Letters to Nature, Nature, Jul. 6, 2000, p. 46-48, vol. 406, Macmillan Magazines Ltd.
U.S. Appl. No. 11/701,284: Office Action dated Mar. 6, 2008.
Tankhilevich et al. “Novel spintronic device: terahertz magnon-photon laser”, Journal of Physics: Conf. Ser. 263 012004, 1st International Symposium on Spintronic Devices and Commercialization (ISSDC2010), IOP Publishing, Feb. 2011.
Korenblit Yehiel
Tankhilevich Boris G.
Bolda Eric
Tankhilevich Boris G.
Terahertz Technologies LLC
LandOfFree
Tunable terahertz generator using a magnon gain medium with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Tunable terahertz generator using a magnon gain medium with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tunable terahertz generator using a magnon gain medium with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2714532