Chin. Phys. Lett.  2007, Vol. 24 Issue (7): 2105-2107    DOI:
Original Articles |
Numerical Analysis of Nano-Aperture Light Source for High-Density Optical Data Storage
XU Ji-Ying;WANG Jia;TIAN Qian;WANG Bo-Xiong
State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084
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XU Ji-Ying, WANG Jia, TIAN Qian et al  2007 Chin. Phys. Lett. 24 2105-2107
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Abstract Two unconventional nano-aperture light sources, an L-shaped nano-aperture source and a 3D nano-aperture source for high-density optical data storage, are numerically investigated. With incidence of a Gaussian beam, the spot size of the Poynting vector coupled into the recording medium is 130×175nm2 for the L-aperture and 120×135nm2 for the 3D nano-aperture. The quantitative analyses indicate that the unconventional nano-aperture sources can provide enough power density to record marks in the commercial recording medium. It is feasible to use a laser diode with a nano-aperture as an active nanometer light source for high-density optical data storage.
Keywords: 78.67.-n      42.79.Ag      42.79.Vb     
Received: 11 January 2007      Published: 25 June 2007
PACS:  78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)  
  42.79.Ag (Apertures, collimators)  
  42.79.Vb (Optical storage systems, optical disks)  
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Articles by authors
XU Ji-Ying
WANG Jia
TIAN Qian
WANG Bo-Xiong
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