Optical element

Details Optical element Optical element

1996-08-08

1999-04-27

Dang, Hung Xuan

Coherent light generators

Particular active media

359244, H01S 314

Patent

active

058987207

ABSTRACT:
An optical element and a method capable of electromagnetically inducing transparency in a solid. The optical element includes a solid having a number N of sites characterized by at least three energy levels including a first level higher than a second and a third lower than the second, and an excitation device configured to irradiate the solid with a first light having a wavelength corresponding to the energy difference between the first and the second level, and a second light having a wavelength corresponding to the energy difference between the first and the third level. The solid satisfies .sigma..sub.23 .ltoreq..sigma..sub.12 and .sigma..sub.23 .ltoreq..sigma..sub.13 where .sigma..sub.12, .sigma..sub.13 and .sigma..sub.23 are respectively the standard deviations of the energy differences between the first and second level, between the first and third level, and between the second and third level.

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K.-J. Boller, et al., "Observation Of Electromagnetically Induced Transparency", Physical Review Letters, vol. 66, No. 20, May 20, 1991, pp. 2593-2596.

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