BACKWARD ECHO IN 2-LEVEL SYSTEMS

被引：53

作者：

FUJITA, M

NAKATSUKA, H

NAKANISHI, H

MATSUOKA, M

机构：

[1] Department of Physics, Faculty of Science, Kyoto University

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 42卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.42.974

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The possible three-pulse echoes in two-level systems of solids and gases are discussed with particular emphasis on backward-wave echoes. One example of the backward echoes was realized with the atomic sodium D line. The detection of this echo requires neither optical shutters nor magnetic field. The decay rate of the echo due to Na-Ar collisions was measured. It is shown that the effect of velocity changing collisions is negligible compared with that of phase interrupting ones. © 1979 The American Physical Society.

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页码：974 / 977

页数：4

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