Title :
Increasing the orbital angular momentum of a fractal beam
Author :
Cho, Yeong-Kwon ; Kim, Kihong
Author_Institution :
Div. of Energy Syst. Res., Ajou Univ., Suwon, South Korea
Abstract :
Optical vortices carrying the orbital angular momentum of light can be used as the advanced information carrier to encode quantum information in optical communications. As an effective method to give a large value of optical vortex charge to the light, we propose the method using a coherent superposition of many Gaussian beams with radial symmetry and self-similarity. By adjusting the initial phases of the constituent beams in a multibeam, the vortex charge at the beam center either becomes very large or evenly disappears. We find the optimal condition for the largest vortex charge.
Keywords :
angular momentum; optical communication; optical vortices; quantum communication; quantum optics; Gaussian beams; advanced information carrier; fractal beam; optical communications; optical vortices; orbital angular momentum; quantum information;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2010 10th IEEE Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-7033-4
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2010.5697898