Focal shift and focal switch of phase-lock partially coherent flat-topped array beams passing through an aligned and misaligned lens system with aperture

被引：6

作者：

Alavinejad, M. ^{[1
]}

Rowshani, A. R. ^{[1
]}

Ghafary, B. ^{[1
]}

机构：

[1] Iran Univ Sci & Technol, Dept Phys, Photon Lab, Tehran, Iran

来源：

OPTICS AND LASERS IN ENGINEERING | 2012年 / 50卷 / 09期

关键词：

Focal shift; Focal switch; Phase-lock partially coherent flat-topped array beams; Aligned and misaligned optical system; PARAXIAL OPTICAL-SYSTEMS; FLATTENED GAUSSIAN-BEAM; SCHELL-MODEL BEAMS; ATMOSPHERIC-TURBULENCE; LASER ARRAY; PROPAGATION PROPERTIES; FINITE APERTURE; ANGULAR SPREAD; BESSEL; SUPERPOSITION;

D O I：

10.1016/j.optlaseng.2012.02.006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The focal shift and focal switch of phase-lock partially coherent flat-topped (PCFT) array beams passing through a lens system with aperture is studied in detail. It is shown that there is a focal shift for mention beam propagating through aligned optical system and the amount of the focal shift depend on optical system and beam characteristics. In addition, a new phenomenon called focal switch occurs for misaligned optical system, i.e. the focal shift experiences a sudden transition as the aligned optical system turns to misalign one. It is shown that, the necessary conditions for the focal switch to take place are also investigated. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

引用

页码：1341 / 1349

页数：9