Focusing properties of vector vortex beams emitted by photonic-crystal lasers.
Opt Lett
; 37(12): 2421-3, 2012 Jun 15.
Article
in En
| MEDLINE
| ID: mdl-22739928
ABSTRACT
We experimentally investigate the focusing properties of first- and second-order vector beams and vector vortex beams generated by photonic-crystal lasers. When the azimuthal indices of the vector beam (l) and the phase dependence (n) match, strong intensity appears at the center of focus. Our theoretical analyses agree well with the experimental results and predict that the central intensity has circular polarization.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Opt Lett
Year:
2012
Type:
Article
Affiliation country:
Japan