Observation of Extra Photon Recoil in a Distorted Optical Field

被引：24

作者：

Bade, Satyanarayana ^{[1
]}

Djadaojee, Lionel ^{[1
]}

Andia, Manuel ^{[1
,3
]}

Clade, Pierre ^{[1
]}

Guellati-Khelifa, Saida ^{[1
,2
]}

机构：

[1] ENS PSL Univ, Sorbonne Univ, CNRS, Lab Kastler Brossel,Coll France, 4 Pl Jussieu, F-75005 Paris, France

[2] Conservatoire Natl Arts & Metiers, 292 Rue St Martin, F-75003 Paris, France

[3] Univ Strathclyde, Dept Phys, SUPA, Glasgow G4 0NG, Lanark, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 07期

关键词：

FINE-STRUCTURE CONSTANT; MOMENTUM; WAVES; ATOM;

D O I：

10.1103/PhysRevLett.121.073603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Light carries momentum which induces on atoms a recoil for each photon absorbed. In vacuum, for a monochromatic beam of frequency nu, the global momentum per photon is bounded by general principles and is smaller than h nu/c leading to a limit on the recoil. However, locally this limit can be broken. In this Letter, we give a general formula to calculate the recoil in vacuum. We show that in a laser beam with a distorted optical field, there are regions where the recoil can be higher than this limit. Using atoms placed in those regions we are able to measure directly the extra recoil.

引用

页数：5

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