Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 3957-3959 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 74 |
| Issue number | 26 |
| Publication status | Published - 1999 Jun 28 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Transmission and photoluminescence images of three-dimensional memory in vitreous silica. / Watanabe, Mitsuru; Juodkazis, Saulius; Sun, Hong Bo; Matsuo, Shigeki; Misawa, Hiroaki; Miwa, Masafumi; Kaneko, Reizo.
In: Applied Physics Letters, Vol. 74, No. 26, 28.06.1999, p. 3957-3959.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Transmission and photoluminescence images of three-dimensional memory in vitreous silica
AU - Watanabe, Mitsuru
AU - Juodkazis, Saulius
AU - Sun, Hong Bo
AU - Matsuo, Shigeki
AU - Misawa, Hiroaki
AU - Miwa, Masafumi
AU - Kaneko, Reizo
PY - 1999/6/28
Y1 - 1999/6/28
N2 - 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.
AB - 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.
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M3 - Article
AN - SCOPUS:0000184425
VL - 74
SP - 3957
EP - 3959
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 26
ER -