The discovery of nanometer fringes in laser self-mixing interference

被引：45

作者：

Fei, Ligang ^{[1
]}

Zhang, Shulian ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Precis Instruments, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2007年 / 273卷 / 01期

基金：

中国国家自然科学基金;

关键词：

lasers; feedback; interference fringe; polarization flipping;

D O I：

10.1016/j.optcom.2006.12.022

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate the influences of optical feedback from an external mirror with high reflectivity in a He-Ne laser on self-mixing interference fringes and laser polarization states. When the external mirror is tilted to a certain level, the stable and uniform nanometer resolution fringes are generated. The fringe density is 40 times than that of the conventional self-mixing interference or two beam interference, and has still potential to be improved. Each self-mixing interference fringe corresponds to lambda/80 displacement of the external mirror, i.e. 7.91 nm displacement of the external mirror. Moreover, when the movement direction of the external mirror is changed, the polarization flipping between two eigenstates will happen. The potential applications of the results are also discussed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：226 / 230

页数：5

共 18 条

[1] Effects of external reflector alignment in sensing applications of optical feedback in laser diodes [J].