Optical memory in du Pont photopolymers by using femtosecond laser pulses

Minh Tuan Trinh, Sun Kyun Lee, Ki Soo Lim, Eunkyung Kim

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


To investigate the feasibility of a high density optical memory in photopolymers, we used two-photon absorption of near-infrared femtosecond laser pulses to perform bit-wise three-dimensional storage. We monitored the transmitted probe beam, which was modulated by the change of refractive index caused by the femtosecond laser irradiation. The size of the spots generated by the focused Gaussian beam depended on the laser intensity and exposure time. The minimum lateral and longitudinal sizes of a spot were estimated as 0.5 and 5 μm, respectively.

Original languageEnglish
Pages (from-to)474-478
Number of pages5
JournalJournal of the Korean Physical Society
Issue number2
Publication statusPublished - 2007 Feb

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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