EXPERIMENTAL DEMONSTRATION OF LIGHT AMPLIFICATION WITHOUT POPULATION-INVERSION

被引：172

作者：

VANDERVEER, WE ^{[1
]}

VANDIEST, RJJ ^{[1
]}

DONSZELMANN, A ^{[1
]}

VANDENHEUVELL, HBV ^{[1
]}

机构：

[1] FOM,INST ATOOM MOLEC FYS,1098 SJ AMSTERDAM,NETHERLANDS

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.70.3243

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation of light amplification without population inversion. A linear superposition of an m = 1 and an m = -1 magnetic substate is populated coherently. Absorption from this superposition to a higher state is canceled by interference of channels, a so-called dark resonance. An inverse transition is used for amplification of light. The temporal behavior of the amplified pulse and the gain are studied as a function of the energy splitting due to a magnetic field. In a vapor of cadmium-112 gain factors of up to 4.3 are observed.

引用

页码：3243 / 3246

页数：4

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