Coherent light generators – Particular active media
Patent
1998-09-29
2000-08-08
Dang, Hung Xuan
Coherent light generators
Particular active media
359244, H01S 314
Patent
active
061012033
ABSTRACT:
A light-modulating element having a RQB medium, a pair of electrodes provided on the RQB medium and connected to a high-frequency power supply, a signal light source for emitting two signal light beams, and two optical fibers for guiding the signal light beams to the RQB medium. In the element, the conditions .sigma..sub.23 .ltoreq..sigma..sub.12 and .sigma..sub.23 .ltoreq..sigma..sub.13 are satisfied, where .sigma..sub.12 is the standard deviation (inhomogeneous broadening) of energies of impurities between a first level and a second level, .sigma..sub.13 is the standard deviation (inhomogeneous broadening) of energies of impurities between first level and a third level, and .sigma..sub.23 is the standard deviation (inhomogeneous broadening) of energies of impurities between the second and third levels, all impurities existing in the RQB medium.
REFERENCES:
patent: 5256849 (1993-10-01), Scully
patent: 5699374 (1997-12-01), Ichimura et al.
patent: 5754511 (1998-05-01), Gemma et al.
patent: 5898720 (1999-04-01), Yamamoto et al.
B.S. Ham, et al., "Enhanced Nondegenerate Four-Wave Mixing Owing to Electromagnetically Induced Transparency in a Spectral Hole-Burning Crystal", Optics Letters, vol. 22, No 15, Aug. 1, 1997, pp. 1138-1140.
M.S. Shahriar, "Direct Excitation of Microwave-Spin Dressed States Using a Laser-Excited Resonance Raman Iteraction", Physical Review Letters, vol. 65, No. 15, Oct. 8, 1990, pp. 1865-1868.
D.V. Kosachiov, et al., "Coherent Phenomena in Multilevel Systems with Closed Interaction Contour", J. Phys. B: At. Mol. Opt. Phys., vol. 25 (1992), pp. 2473-2488.
A. S. Zibrov, et al., "Experimental Demonstration of Laser Oscillation Without Population Inversion via Quantum Interference In Rb", Physical Reviews Letters, vol. 75, No. 8, Aug. 21, 1995, pp. 1499-1502.
Yifu Zhu, et al., "Intensity Characteristics of Inversionless Lasers from Induced Atomic Coherence", Physical Review A, vol. 49, No. 5, May 1994, pp. 4016-4023.
M.A.G. Martinez, et al., "Quantum Interference Effects in Spontaneous Atomic Emission: Dependence of the Resonance Fluorescence Spectrum on the Phase of the Driving Field", Physical Review A, vol. 55, No. 6, Jun. 1997, pp. 4483-4491.
Pal Bogar, et al., "Two-Mode Lasing Without Inversion with Injected Atomic Coherence", Physical Review A, vol. 56, No. 1, Jul. 1997, pp. 1012-1022.
N. Ph, Georgiades, et al., "Atoms as Nonlinear Mixers for Detection of Quantum Correlations at Ultrahigh Frequencies", Physical Review A, vol. 55, No. 3, Mar. 1997, pp. R1605-R1608.
Yang Zhao, et al. "Microwave Induced Transparency in Ruby", Physical Review Letters, vol. 79, No. 4, Jul. 28, 1997, pp. 641-644.
H. Schmidt, et al., "Tunnneling Induced Transparency: Fano Interference in Intersubband Transitions", Appl. Phys. Lett., vol. 70, No. 25, Jun. 23, 1997, pp. 3455-3457.
Danhong Huang, et al., "Coulomb and Light-Induced Electronic Renormalization in Quantum Wells for Electromagnetically Induced Transparency and Light Amplification Without Inversion", J. Opt. Soc. Am. B/vol. 11, No. 11, Nov. 1994, pp. 2258-2265.
P.J. Harshman, et al., "Strong Field Theory of Low Loss Optical Switching and Three-Wave Mixing in a Semiconductor Quantum Well", IEEE Journal of Quantum Electronics, vol. 30, No. 10, Oct. 1994, pp. 2297-2303.
A. Imamglu, et al., "Semiconductor Lasers Without Population Inversion", Optics Letters, vol. 19, No. 21, Nov. 1, 1994, pp. 1744-1746.
D. Kosachiov, et al., "Coherent Population Trapping: Sensitivity of an Atomic System to the Relative Phase of Exciting Fields", Optics Communications, vol. 85 (1991) pp. 209-212.
N. Ph. Georgiades, et al., "Frequency Metrology by use of Quantum Interference", Optics letters, vol. 21, No. 20, Oct. 15, 1996, pp. 1688-1690.
Fam Le Kien, et al., "Quantum Theory of the One-Mode .LAMBDA.-Type Micromaser and Laser", Physical Review A, vol. 51, No. 2, Feb. 1995, pp. 1644-1649.
Janos A. Bergou, "Quantum Theory of a Noninversion Laser with Injected Atomic Coherence", Physical Review A, vol. 43, No. 9, May 1, 1991, pp. 4889-4900.
Marlan O. Scully, et al., "Degenerate Quantum-Beat Laser: Lasing Without Inversion and Inversion Without Lasing", Physical Review Letters, vol. 62, No. 24, Jun. 12, 1989, pp. 2813-2816.
A. Kasapi, et al., "Electromagnetically Induced Transparency: Propagation Dynamics", Physical Review Letters, vol. 74, No. 13, Mar. 27, 1995, pp. 2447-2450.
Yong-qing Li, et al., "Observation of an Electromagnetically Induced Change of Absorption in Multilevel Rubidium Atoms", Physical Review A, vol. 51, No. 3, Mar. 1995, pp. R1754-R1757.
A.M. Akulshin, et al., "Sub-Natural Absorption Resonance on the D.sub.1 Line of Rubidium Induced by Coherent Population Trapping", Optics Communications, vol. 84, Nos, 3, 4, Jul. 15, 1991, pp. 139-143.
Satoru Adachi, et al., "Experimental and Numerical Studies on Population Trapping In Gd Vapor", Optics Communications, vol. 81, No. 6, Mar. 15, 1991, pp. 364-368.
A. Aspect, et al., "Laser Cooling Below the One-Photon Recoil Energy by Velocity-Selective Coherent Population Trapping", Physical Review Letters, vol. 61, No. 7, Aug. 15, 1988, pp. 826-829.
Matti Kaivola, et al., "Observation of Population Trapping in a Two-Photon Resonant Three-Level Atom", Optics Communications, vol. 49, No. 6, Apr. 15, 1984, pp. 418-422.
H.R. Gray, et al., "Coherent Trapping of Atomic Populations", Optics Letters, vol. 3, No. 6, Dec. 1978, pp. 218-220.
G. Alzetta, et al., "An Experimental Method for the Observation of R.F. Transitions and Laser Beat Resonances in Oriented Na Vapour", Il Nouvo Cimento, vol. 36 B, No. 1, Nov. 11, 1976, pp. 5-20.
E. Arimondo, et al., "Nonabsorbing Atomic Coherences by Coherent Two-Photon Transitions in a Three-Level Optical Pumping", Lettere al Nuovo Cimento, vol. 17, No. 10, Nov. 6, 1976, pp. 333-338.
Marian o. Scully, "Enhancement of the Index of Refraction via Quantum Coherence", Physical Review Letters, vol. 67, No. 14, Sep. 30, 1991, pp. 1855-1858.
S. E. Harris, "Lasers Without Inversion: Interference of Lifetime-Broadened Resonances", Physical Review Letters, vol. 62, No. 9, Feb. 27, 1989, pp. 1033-1036.
K.-J. Boller, et al., "Observation of Electromagnetically Induced Transparency", Physical Review Letters, vol. 66, No. 20, May 20, 1991, pp. 2593-2596.
Gemma Nobuhiro
Ichimura Kouichi
Yamamoto Kazushige
Dang Hung Xuan
Kabushiki Kaisha Toshiba
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