Title :
Direct determination of light beams’ topological charges using diffraction
Author :
Soares, W.C. ; Caetano, D.P. ; Fonseca, E.J.S. ; Chavez-Cerda, S. ; Hickmann, J.M.
Author_Institution :
Inst. de Fis., Univ. Fed. de Alagoas, Maceio
Abstract :
We demonstrate a new method to measure the phase singularity of light beams with orbital angular momentum, based on the diffraction by a triangular aperture. We have applied our method to Bessel and Laguerre-Gauss beams.
Keywords :
light diffraction; Bessel beam; Laguerre-Gauss beam; diffraction; light beams; orbital angular momentum; phase singularity; triangular aperture; Apertures; Charge coupled devices; Current measurement; Extraterrestrial measurements; Interference; Laser beams; Optical beams; Optical diffraction; Optical interferometry; Optical resonators; (030.4070) Modes; (090.1970) Diffractive optics;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
