Nonlinear fluorescence modulation of an organic dye for optical data storage

C. W. Christenson, A. Saini, B. Valle, J. Shan, K. D. Singer

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

Most approaches to high-capacity 3D optical data storage (ODS) require confinement of the writing action to a specified depth in the writing medium. This is achieved by a nonlinear photoresponse, usually two-photon absorption, which requires a pulsed long-wavelength source. Fluorescence photobleaching of a dye/polymer composite can be used at a short wavelength to store data at the diffraction limit in a layered storage medium. In this work, the writing response of a bleachable dye/polymer system illuminated with single pulses of various duration obtained from a modulated 405 nm wavelength CW laser was studied. A transition from a linear to nonlinear writing mechanism was observed near the microsecond time scale. Concentration-dependent measurements indicate that a photothermal mechanism accounts for the nonlinear response in the short pulse, higher power regime. This nonlinear response may be useful for realizing terabyte scale ODS in multilayered polymer media.

Original languageEnglish (US)
Pages (from-to)637-641
Number of pages5
JournalJournal of the Optical Society of America B: Optical Physics
Volume31
Issue number3
DOIs
StatePublished - Mar 1 2014

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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