SUB-POISSONIAN LASER-LIGHT BY DYNAMIC PUMP-NOISE SUPPRESSION

被引:87
作者
RITSCH, H
ZOLLER, P
GARDINER, CW
WALLS, DF
机构
[1] UNIV COLORADO, JOINT INST LAB ASTROPHYS, BOULDER, CO 80309 USA
[2] UNIV COLORADO, DEPT PHYS, BOULDER, CO 80309 USA
[3] UNIV WAIKATO, DEPT PHYS, HAMILTON, NEW ZEALAND
[4] UNIV AUCKLAND, DEPT PHYS, AUCKLAND, NEW ZEALAND
来源
PHYSICAL REVIEW A | 1991年 / 44卷 / 05期
关键词
D O I
10.1103/PhysRevA.44.3361
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We identify a mechanism of dynamical pump-noise suppression in lasers. It is based on the recycling of the active laser electron from the lower to the upper laser level by a sequence of incoherent step processes. Although each of these steps corresponds to a Poisson process, i.e., is stochastic, the combination of many incoherent steps leads to a regular (deterministic) recycling of the laser electron and, correspondingly, a pump-noise suppression in the laser. The mechanism predicts sub-Poissonian laser output and intensity fluctuations beyond the shot-noise limit for incoherently pumped systems.
引用
收藏
页码:3361 / 3364
页数:4
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