[1] M. O. Scully,S. Y. Zhu,A. Grarielides. Degenerate quantum-beat laser:lasing without inversion and inversion without lasing[J].Phys. Rev. Lett.,1989,62(24):2813-2816
[2] A. V. Taichenachev,A. M. Tumaikin,V. I. Yudin. Electromagnetically induced absorption in a four-state system[J]. Phys. Rev. A,1999,61(1):011802
[3] C. Andreeva,S. Cartaleva,Y. Dancheva et al.. Coherent spectroscopy of degenerate two-level systems in Cs[J]. Phys. Rev. A,2002,66(1):012502
[4] S. E. Harris,J. E. Field,A. Imamoglu. Nonlinear optical processes using electromagnetically induced transparency[J]. Phys.Rev. Lett.,1990,64(10):1107-1110
[5] K. J. Boller,A. Imamolu,S. E. Harris. Observation of electromagnetically induced transparency[J]. Phys. Rev. Lett.,1991,66(20):2593-2596
[8] B. S. Ham,M. S. Shahriar,M. K. Kim et al.. Frequency-selective time-domain optical data storage by electroma gnetically induced transparency in a rare-earth-doped solid [J]. Opt. Lett.,1997,22(24):1849-1851
[10] D. F. Phillips,A. Fleischhauer,A. Maie et al.. Storage of light in atomic vapor[J]. Phys. Rev. Lett.,2001,86(5):783-786
[11] Q. Schmidt,R. Wynands,Z. Hussein et al.. Steep dispersion and group velocity below c/3000 in coherent populationtrapping[J]. Phys. Rev. A,1996,53(1):R27-R30
[12] B. S. Ham,P. R. Hemmer. Coherence switching in a four-level system:quantum switching [J]. Phys. Rev. Lett.,2000,84(18):4080-4083
[13] E. A. Wilson,N. B. Manson,C. Wei et al.. Perturbing an electromagnetically induced transparency in a L system using a low-frequency driving field. I. three-level system[J]. Phys. Rev. A,2005,72(6):063813
[14] L. J. Yang,L. S. Zhang,X. L. Li et al.. Aulter-Townes effect in a strongly driven electromagnetically induced transparency resonance[J]. Phys. Rev. A,2005,72(5):053801
[15] E. A. Wilson,N. B. Manson,Wei. Perturbing an electromagnetically transparency in a L syatem using a low-frequency driving field. P. foure-level system[J]. Phys. Rev. A,2005,72(6):063814
[16] Andrew D. Greentree,Changjiang Wei,Scott A. Holmatrom et al.. Probing a doubly driven two-level atom[J]. J. Opt. B:Quantum Semiclass. Opt.,1999,1(1):240-244
[17] J. Wang,Y. Zhu,K. J. Jiang et al.. Bichromatic electromagnetically induced transparency in cold rubidium atoms[J]. Phys. Rev.A,2003,68(6):063810
[18] Z. Ficek,H. S. Freedhoff. Resonance-fluorescence and absorption spectra of a two-level atom driven by a strong bichromatic field[J]. Phys. Rev. A,1993,48(4):3092-3104