Focal shift in the axisymmetric Bessel-modulated Gaussian beam

被引：25

作者：

Hricha, Z ^{[1
]}

Belafhal, A ^{[1
]}

机构：

[1] Univ Chouaib Doukkali, Fac Sci, Dept Phys, Phys Mol Lab, El Jadida 24000, Mexico

来源：

OPTICS COMMUNICATIONS | 2005年 / 255卷 / 4-6期

关键词：

focal shift; Bessel-modulated Gaussian beam (QBG beam); axisymmetric QBG beam; band width; encircled-power criterion;

D O I：

10.1016/j.optcom.2005.06.025

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The focal shift of the axisymmetric Bessel-modulated Gaussian beam with quadratic radial dependence (QBG beam) is investigated by using two different approaches. The first approach is based on the encircled-power criterion and the second one is the conventional method based on the axial irradiance. In this last case, a third-order equation governing the amount the relative focal shift is derived. Moreover, it is shown from numerical calculation results that the two approaches provide mainly the same results; the focal shift of the axisymmetric QBG beam depend on the Gaussian Fresnel number N-w and the beam parameter mu. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：235 / 240

页数：6

共 15 条

[1] ABRAMOWITCH M, 1964, HDB MATH FUNCTION
[2] Collins formula and propagation of Bessel-modulated Gaussian light beams through an ABCD optical system
Belafhal, A
Dalil-Essakali, L
[J]. OPTICS COMMUNICATIONS, 2000, 177 (1-6) : 181 - 188
[3] Focal shift of focused flat-topped beams
Borghi, R
Santarsiero, M
Vicalvi, S
[J]. OPTICS COMMUNICATIONS, 1998, 154 (5-6) : 243 - 248
[4] Bessel-modulated Gaussian beams with quadratic radial dependence
Caron, CFR
Potvliege, RM
[J]. OPTICS COMMUNICATIONS, 1999, 164 (1-3) : 83 - 93
[5] FOCAL SHIFT IN LAGUERRE-GAUSSIAN BEAMS
CARTER, WH
ABURDENE, MF
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1987, 4 (10): : 1949 - 1952
[6] Focal shift in vector beams
Greene, PL
Hall, DG
[J]. OPTICS EXPRESS, 1999, 4 (10): : 411 - 419
[7] Axial intensity distribution and focal shifts of focused partially coherent conical Bessel-Gauss beams
Hricha, Z
Dalil-Essakali, L
Belafhal, A
[J]. OPTICAL AND QUANTUM ELECTRONICS, 2003, 35 (02) : 101 - 110
[8] HRICHA Z, 2005, IN PRESS OPT COMMUN
[9] FOCAL SHIFT IN FOCUSED TRUNCATED GAUSSIAN BEAMS
LI, Y
WOLF, E
[J]. OPTICS COMMUNICATIONS, 1982, 42 (03) : 151 - 156
[10] FOCAL SHIFTS IN DIFFRACTED CONVERGING SPHERICAL WAVES
LI, Y
WOLF, E
[J]. OPTICS COMMUNICATIONS, 1981, 39 (04) : 211 - 215

← 1 2 →