Sm(DBM)3Phen-doped poly(methyl methacrylate) for three-dimensional multilayered optical memory.
We report on the formation of submicrometer voids within Sm(DBM)3Phen-doped poly(methyl methacrylate) (PMMA) under multiphoton absorption excited by an infrared laser beam. An ultrashort-pulsed laser beam with a pulse width of 200 fs at a wavelength of 800 nm is focused into doped PMMA. The large changes in refractive index and the fluorescence associated with a void allow conventional optical microscopy and reflection-type confocal microscopy to be used as detection methods. Voids can be arranged in a three-dimensional multilayered structure for high-density optical data storage.
Jiu
Hongfang
H
Structure Research Laboratory and Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
Tang
Huohong
H
Zhou
Jingli
J
Xu
Jie
J
Zhang
Qijin
Q
Xing
Hui
H
Huang
Wenhao
W
Xia
Andong
A