Applied Physics A

, Volume 79, Issue 4, pp 791–794

Femtosecond laser application for high capacity optical data storage

  • M.H. Hong
  • B. Luk’yanchuk
  • S.M. Huang
  • T.S. Ong
  • L.H. Van
  • T.C. Chong
Article

DOI: 10.1007/s00339-004-2630-1

Cite this article as:
Hong, M., Luk’yanchuk, B., Huang, S. et al. Appl. Phys. A (2004) 79: 791. doi:10.1007/s00339-004-2630-1

Abstract

A femtosecond (fs) laser application for multi-layer optical recording is investigated. Information patterns at different layer depths were written inside a transparent glass substrate due to micro-void formation by fs laser ablation, which causes re-distribution in glass materials and a refractive index modification. The information bits recorded in a single layer can be retrieved clearly without interference from the neighboring layers. A fs laser irradiation of a transparent polymer matrix (doped with fluorescent materials for use as low-cost recording media) is also studied. A fs laser induced photo-chemical reaction changes the chemical properties of the fluorescent materials and records information bits inside the matrix. With an ultra-fast laser as a new light source, 3D optical recording can be available for high capacity data storage up to 1 TB per disc.

Copyright information

© Springer-Verlag 2004

Authors and Affiliations

  • M.H. Hong
    • 1
    • 2
  • B. Luk’yanchuk
    • 1
  • S.M. Huang
    • 1
  • T.S. Ong
    • 1
  • L.H. Van
    • 1
  • T.C. Chong
    • 1
    • 2
  1. 1.Data Storage InstituteSingaporeSingapore
  2. 2.Department of Electrical and Computer EngineeringNational University of SingaporeSingaporeSingapore