Title :
The use of orbital angular momentum in optical data storage
Author :
Braat, J.J.M. ; van de Nes, A.S. ; Pereira, S.F. ; Voogd, R.J. ; Alkemade, P.F.A.
Author_Institution :
Optics Res. Group, Delft Univ. of Technol.
Abstract :
The information capacity of an optical disc is commonly increased by decreasing the diffraction unit lambda/NA of the optical read-out system (NA is the numerical aperture of the objective). We present a method to increase the information capacity at a specific lambda/NA-value by imparting orbital angular momentum to the read-out beam via specially structured optical effects
Keywords :
angular momentum; channel capacity; optical disc storage; information capacity; numerical aperture; optical data storage; optical read-out system; orbital angular momentum; Apertures; Lenses; Memory; Optical diffraction; Optical noise; Optical recording; Optical scattering; Optimized production technology; Solids; Tunneling;
Conference_Titel :
Lasers and Electro-Optics Europe, 2005. CLEO/Europe. 2005 Conference on
Conference_Location :
Munich
Print_ISBN :
0-7803-8974-3
DOI :
10.1109/CLEOE.2005.1568488
