[1] Bortman-Arbiv D,Wilson-Gordon A D,Friedmann.Phase control of group velocity:From subliminal to superluminal light propagation.Phys Rev,2001,A63:043818
[2] Plenio M B.Equivalent classes of closed three-level systems.Phys Rev,2000,A62:015802-1~7
[3] Haroche S,Painer J A,Schawlow A L.Hyperfine quantum beats observed in Cs vapor under pulsed dye laser excitation.Phys Rev Lett,1973,30(20):948~951
[4] Lange W,Mlynek J.Quantum beats in transmissiom by time-solved polarization spectoscopy.Phys Rev Lett,1978,40(21):1373~1375
[5] Nadeem A,Ansarri A,Zaheer K.Theory of a quation beats laser in a three level cascade atomic system.Opt Commun,1992,92(1,2,3):79~94
[6] Sunlish M,Agarwal G S.Gain components in the Autler-Townes doublet from quantum interferences in decay channels.Phys Rev,1999,A61:013807-1~8
[7] Hartmann S R,Jamal T M.Time-delayed four-wave mixing with incoherent light:the inhomogeneous for a system with multilevel structure.J Phys,1990,B23(7):1363~1372
[8] Fu Panming,Yu Zhe,Mi X,et al.Doppler-free ultrafast modulation spectroscopy with phase-conjugation geometry.Phys,1994,A50(1):698~708
[9] Yee T K,Gustafason.Diagrammatic analysis of density operator for nonlinear optical calculations pulsed and CW responses.Phys Rev,1978,A18(4):1597~1617
[10] Ye Peixian,Shen Y R.Transient optical phenomena.Phys Rev,1982,A25(4):2183~2199
[11] Agaral G S,Patnaik A K.Vacuum-induced coherences in radiatively coupled multilevel system.Phys Rev,2001,A63:043805
[12] Fleichhauer M,Keitel Ch,Narducci L M,et al.Lasing without inversion:interference of radiatively broadened resonce in dress atomic system.Opt Commun,1992,94(6):598~608
[13] Hu Zhenhua.Quantum coherent relaxation with population and spontaneous coherent emission of the V-level atom in vacuum.Acta Photonica Sinica (in Chinese),2000,29(5):369~401
[14] Norio M,Tatsuo Y.Ultrahigh-time-resolution transient spectroscopy with incoherent.Phys Rev,1985,A32(3):1605~1617
[15] Mitssunaga M,Brewer R G.Generalized perturbation theory of coherent optical emissiom.Phys Rev,1985,A32(3):1605~1617