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Title

Effect of ultrashort pulsed illumination on foci caused by a Fresnel zone plate

Author(s)

Ashman, Ross;  Gu, Min

Abstract

The focal distribution produced by a zone plate under ultrashort pulsed laser illumination is investigated under the Fresnel approximation. A comparison of the diffraction patterns in the focal region between pulsed and continuous-wave illumination shows that the focal shape produced by a zone plate can be significantly altered when an ultrashort pulse is shorter than 100 fs. In particular, the focal width in the axial and the transverse directions is increased by approximately 5% and 85%, respectively, from continuous-wave illumination to 10-fs pulsed illumination.

Publication type

Journal article

Research centre

Swinburne University of Technology. School of Biophysical Science and Electrical Engineering. Centre for Micro-Photonics

Source

Applied Optics, Vol. 42, no. 10 (Apr 2003), pp. 1852-1855

Publication year

2003

Publisher

Optical Society of America

ISSN

0003-6935

Publisher URL

http://dx.doi.org/10.1364/AO.42.001852

Copyright

Copyright © 2003 Optical Society of America. Published version of the paper reproduced here in accordance with the copyright policy of the publisher. This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?id=71784. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Full text

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