Ukrainian Journal of Physical Optics 

Number  1, Volume 3,  2002

Home page

Other articles 

in this issue
Light beams focusing in periodically non-uniform crystalline medium
Kurilkina S.N.

Department of Optics, Gomel State University Sovietskaya St., 104, 246699, Gomel, Belarus

download full version

In the present paper the peculiarities of propagation and diffraction of optical waves in the crystalline periodically non-uniform media are considered. The dependence of light beam divergence in the crystal on curvatures of wave vector surface is obtained. It is shown, that presence of the periodic non-uniformity of the crystal and natural anisotropy lead to essential deformation of wave vector surface, namely, to the appearance of local regions with negative curvature and, hence, to the effect of light focusing in corresponding directions. The application of uniform electric field may intensify the light focusing. The crystalline diffraction lenses are proposed which are controlled by electric field and variation of incident light polarization.

doi 10.3116/16091833/3/1/19/2002

1. Yeh P Optical Waves in Layered Media. Wiley, New York (1988), 568 p.
2. Soukoulis CM  Photonic Band Gap Materials. Kluwer (1996), 326 p.
3. Joannopoulos JD, Meade R, Winn JN, 1995. Photonic Crystals: Molding the Flow of Light. Princeton Univ. Press, Princeton, 296 p.
4. Rarity JC, Weisbuch C Microcavities and Photonic Bandgaps. Kluwer (1996), 195 p.
5. Feiertag.G, Ehrfeld W, Freimuth H, 1997. et al, 1997. Appl. Phys. Lett. 71: 1441.
6. Zheltikov AM, Koroteev NI, Magnitskii SA, Tarasishin AV, 1998. Quantum electronics 25: 885-890.
7. Smirnov AG, 1999. Optics and spectroscopy 87: 606-611.

Home | Instructions to Authors | Editorial Board | Meetings & Exhibitions