Please use this identifier to cite or link to this item: https://doi.org/10.1364/OE.15.006409
Title: Ultra long high resolution beam by multi-zone rotationally symmetrical complex pupil filter
Authors: Xu, Y.
Singh, J.
Sheppard, C.J.R. 
Chen, N. 
Issue Date: 14-May-2007
Source: Xu, Y., Singh, J., Sheppard, C.J.R., Chen, N. (2007-05-14). Ultra long high resolution beam by multi-zone rotationally symmetrical complex pupil filter. Optics Express 15 (10) : 6409-6413. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.15.006409
Abstract: An ultra long high resolution beam with extension of depth of focus (DoF) in the axial direction as well as high resolution in the transverse direction has been demonstrated by a seven-zone rotationally symmetrical complex pupil filter imposed at the aperture of a focusing lens. Both amplitude and phase of the transmitted light are modulated in different zones. The scalar diffraction theory is used to optimize the zone parameters. Simulation results show that extended DoF of the beam is increased by 16 times while the spot size at the beam waist is reduced to 0.7 times. ©2007 Optical Society of America.
Source Title: Optics Express
URI: http://scholarbank.nus.edu.sg/handle/10635/67340
ISSN: 10944087
DOI: 10.1364/OE.15.006409
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