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Polarisation singularities of optical beam propagating in imperfect quartz crystals
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Vasylkiv Yu., Savaryn V., Smaga I., Skab I. and Vlokh R.

Abstract. We have revealed experimentally polarisation singularities in the optical beam propagating through quartz crystals along the direction of optic axis and discussed their origin. It has been supposed that the singularities are caused by a screw dislocation of crystalline structure.

Keywords: crystalline structure, dislocations, polarisation singularities, optical vortices

PACS: 42.50.Tx, 78.20.Fm, 42.50.-p, 78.20.hb, 61.50.-f, 61.72.Ff
UDC: 535.5, 548.4
Ukr. J. Phys. Opt. 13 204-206
doi: 10.3116/16091833/13/4/204/2012

Received: 02.10.2012

Анотація. Експериментально виявлено поляризаційні сингулярності в промені, що поширюється вздовж оптичної осі в кристалах кварцу, та обговорено природу цих сингулярностей. Припускається, що вони спричинені гвинтовими дислокаціями кристалічної структури.
 
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