1.
Opt Lett
; 39(4): 929-32, 2014 Feb 15.
Artigo
em Inglês
| MEDLINE
| ID: mdl-24562244
RESUMO
We propose and show experimentally axisymmetric spatial (angular) filtering of two-dimensional light beams by axisymmetric photonic microstructures. Such three-dimensional microstructures (similar to photonic crystals), in gapless configuration, were recorded in bulk of glass, where the refractive index has been point-by-point modulated using tightly focused femtosecond laser pulses. Axisymmetric angular filtering of approximately 25 mrad is demonstrated experimentally.
2.