Share Email Print
cover

Proceedings Paper

Focusing properties and focal depth of amplitude modulation Gaussian beams
Author(s): Jinsong Li; Songlin Zhuang; Huizhen Feng
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The focusing properties and focal depth of amplitude modulation Gaussian beams are investigated. Numerical results show that the intensity in the focus plane is circle shape in the low numerical-aperture optical system, while the intensity distribution in the focal plane is ellipse shape in high numerical-aperture optical system due to contribution of depolarized longitudinal component. Focal spot size and focal depth can be adjusted by changing geometrical parameters and the modulation amplitude power n of Gaussian beams. The tunable range of the focal depth is very considerable.

Paper Details

Date Published: 4 January 2008
PDF: 6 pages
Proc. SPIE 6832, Holography and Diffractive Optics III, 68322F (4 January 2008); doi: 10.1117/12.757218
Show Author Affiliations
Jinsong Li, China Jiliang Univ. (China)
Univ. of Shanghai for Science and Technology (China)
Songlin Zhuang, Univ. of Shanghai for Science and Technology (China)
Huizhen Feng, China Jiliang Univ. (China)


Published in SPIE Proceedings Vol. 6832:
Holography and Diffractive Optics III
Yunlong Sheng; Dahsiung Hsu; Chongxiu Yu, Editor(s)

© SPIE. Terms of Use
Back to Top