Open AccessInvestigation on the intense fringe formation phenomenon downstream hot-image plane
Author(s) -
Yonghua Hu,
Guohui Li,
Lifu Zhang,
WeiPing Huang,
Shuming Chen
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.030878
Subject(s) - optics , physics , beam (structure) , kerr effect , nonlinear medium , plane (geometry) , interference (communication) , wavelength , gaussian beam , image formation , light beam , downstream (manufacturing) , self focusing , image plane , nonlinear system , nonlinear optics , laser beams , laser , telecommunications , image (mathematics) , geometry , channel (broadcasting) , mathematics , operations management , quantum mechanics , artificial intelligence , computer science , economics
The propagation of a high-power flat-topped Gaussian beam, which is modulated by three parallel wirelike scatterers, passing through a downstream Kerr medium slab and free spaces is investigated. A new phenomenon is found that a kind of intense fringe with intensity several times that of the incident beam can be formed in a plane downstream the Kerr medium. This kind of intense fringe is another result in the propagation process of nonlinear imaging and it locates scores of centimeters downstream the predicted hot image plane. Moreover, the intensity of this fringe can achieve the magnitude of that of hot image in corresponding single-scatterer case, and this phenomenon can arise only under certain conditions. As for the corresponding hot images, they are also formed but largely suppressed. The cause of the formation of such an intense fringe is analyzed and found related to interference in the free space downstream the Kerr medium. Moreover, the ways it is influenced by some important factors such as the wavelength of incident beam and the properties of scatterers and Kerr medium are discussed, and some important properties and relations are revealed.