Inversionless light amplification and optical switching controlled by state-dependent alignment of molecules

Details Inversionless light amplification and optical switching controlled by state-dependent alignment of molecules Inversionless light amplification and optical switching controlled by state-dependent alignment of molecules

2003-10-06

arxiv.org/abs/quant-ph/0310044v1

Opt. Lett. 30, 1719-21 (2005); J. Phys. B: At. Mol. Opt. Phys. 38, 1787-1796 (2005)

Physics

Quantum Physics

AMS-LaTeX v1.2, 4 pages with 4 figures

Scientific paper

10.1088/0953-4075/38/11/018

We propose a method to achieve amplification without population inversion by anisotropic molecules whose orientation by an external electric field is state-dependent. It is based on decoupling of the lower-state molecules from the resonant light while the excited ones remain emitting. The suitable class of molecules is discussed, the equation for the gain factor is derived, and the magnitude of the inversionless amplification is estimated for the typical experimental conditions. Such switching of the sample from absorbing to amplifying via transparent state is shown to be possible both with the aid of dc and ac control electric fields.

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