期刊
PHYSICS LETTERS A
卷 326, 期 1-2, 页码 140-145出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physleta.2004.03.082
关键词
optical microscopy; optical structuring; nonlinear optics; nanoscale resolution; diffraction barrier; saturable molecular transitions
A general concept is described for subdiffraction imaging and writing with focused light and conventional optics. It is unique in the fact that the giant optical nonlinearities required for breaking the diffraction barrier are realized at low light intensities. The result is that far-field resolution on the nanoscale becomes feasible at realistic physical conditions. The predicted subdiffraction resolution or feature size is formulated in a simple equation. (C) 2004 Elsevier B.V. All rights reserved.
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