The intra-cavity phase anisotropy and the polarization flipping in HeNe laser.

TitleThe intra-cavity phase anisotropy and the polarization flipping in HeNe laser.
Publication TypeJournal Article
Year of Publication2013
AuthorsWu Y, Zhang S, Li Y
JournalOptics express
Volume21
Issue11
Pagination13684-90
Date Published2013 Jun 3
Abstract

The effect of intra-cavity phase anisotropy on polarization flipping induced by optical feedback is experimentally and theoretically investigated. In experiments, we place a polarizer in feedback cavity to induce polarization flipping. The polarization flipping doesn't occur when the angle between polarizer axis and laser polarization approaches 45°. It is found that the larger the phase anisotropy is, the more easily the polarization flipping happens. As the intra-cavity phase anisotropy is increased, polarization flipping always occurs when the angle between polarizer axis and laser polarization is changed from 0° to 90°. This indicates that the phase anisotropy of the laser cavity contributes to the polarization flipping. It is necessary to keep certain phase anisotropy for the lasers used for polarization control.

DOI10.1155/2013/626258
Alternate JournalOpt Express