Transmission and photoluminescence images of three-dimensional memory in vitreous silica

Mitsuru Watanabe, Saulius Juodkazis, Hong Bo Sun, Shigeki Matsuo, Hiroaki Misawa, Masafumi Miwa, Reizo Kaneko

研究成果査読

60 被引用数 (Scopus)

抄録

We demonstrate separate readouts of three-dimensional memory by (i) transmission imaging using a conventional optical microscope and (ii) photoluminescence (PL) of the bits created by inducing optical damage within the vitreous silica. Recording was done by tightly focused (objective ×100, numerical aperture 1.3) single shot irradiation of 120 fs duration pulses at a 400 nm wavelength. For the readout, a broadband of PL at 470-600 nm was excited by 400 nm, 120 fs irradiation with pulse energy smaller by a factor of 106 compared with that for the recording. We found an erasing of the PL after 400°C annealing, while the readability of the bits by the transmission was sustained. This shows the potential for two-bit information recording per single bit by means of separate readout procedures.

本文言語English
ページ(範囲)3957-3959
ページ数3
ジャーナルApplied Physics Letters
74
26
DOI
出版ステータスPublished - 1999 6 28
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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