Abstract
A spatially localized photochemical reaction induced by near-field femtosecond laser pulses is demonstrated on a nanometer scale and used for high-density optical data storage. Recorded domains down to 120 and 70 nm are obtained with one-photon and two-photon excitation, respectively. It is shown that the local-field confinement that is due to the quadratic dependence of two-photon excitation on light intensity has the potential to increase the near-field optical storage density.
© 2001 Optical Society of America
Full Article | PDF ArticleMore Like This
Chubing Peng
Appl. Opt. 40(23) 3922-3931 (2001)
Myung Bok Lee, Motonobu Kourogi, Takashi Yatsui, Kazuo Tsutsui, Nobufumi Atoda, and Motoichi Ohtsu
Appl. Opt. 38(16) 3566-3571 (1999)
Daniel Day and Min Gu
Appl. Opt. 37(26) 6299-6304 (1998)