Effects of phase fluctuation in an open four-level inversionless lasing system
Chinese Optics Letters, Vol. 2, Issue 11, pp. 673-676 (2004)
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Abstract
A steady analytical solution of an open four-level inversionless lasing system with a driving field having the phase fluctuation has been given, and the effects of the finite width due to the phase fluctuation on the gain, dispersion, and population difference have been analyzed by using the numerical simulation from the steady analytical solution. It is found that: with the linewidth increasing, the gain decreases and the absolute value of population difference between levels coupled by the probe field increases, but the variation of the linewidth cannot change the properties of the inversionless lasing and refractive index increase of the system; when the linewidth does not equal to zero, the system can still get a high refractive index with zero absorption, and these conclusions have very obvious difference from those obtained in other inversionless lasing systems.
© 2005 Chinese Optics Letters
OCIS Codes
(270.1670) Quantum optics : Coherent optical effects
(270.3430) Quantum optics : Laser theory
Citation
Xijun Fan, Mengzheng Zhu, Zhengping Hong, Shangqing Gong, and Zhizhan Xu, "Effects of phase fluctuation in an open four-level inversionless lasing system," Chin. Opt. Lett. 2, 673-676 (2004)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-2-11-673
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