2 MECHANISMS FOR INVERSIONLESS AMPLIFICATION IN 4-LEVEL ATOMS WITH RAMAN PUMPING

被引：85

作者：

KEITEL, CH

KOCHAROVSKAYA, OA

NARDUCCI, LM

SCULLY, MO

ZHU, SY

DOSS, HM

机构：

[1] MISSISSIPPI STATE UNIV, MISSISSIPPI AGR & FORESTRY EXPT STN, DEPT PHYS, MISSISSIPPI STATE, MS 39762 USA

[2] UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED, BLACKETT LAB, OPT SECT, LONDON SW7 2BZ, ENGLAND

[3] RUSSIAN ACAD SCI, INST APPL PHYS, NIZHNII NOVGOROD 603600, RUSSIA

[4] DREXEL UNIV, DEPT PHYS & ATMOSPHER SCI, PHILADELPHIA, PA 19104 USA

[5] TEXAS A&M UNIV SYST, DEPT PHYS, COLL STN, TX 77843 USA

[6] SHANGHAI JIAO TONG UNIV, DEPT APPL PHYS, SHANGHAI 200030, PEOPLES R CHINA

来源：

PHYSICAL REVIEW A | 1993年 / 48卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.48.3196

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We analyze the physical origin of the inversionless amplification in four-level atoms driven by a Raman field and identify the existence of two different mechanisms for the predicted gain. The first mechanism is connected with the appearance of a population inversion between the atomic states dressed by the coherent pump, while the second is linked to the buildup of coherence among these states. Proper selection of the relaxation parameters can make either the first or the second mechanism dominant over the other although usually both coexist.

引用

页码：3196 / 3202

页数：7

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