A Mach-Zehnder interferometric system for measuring the refractive indices of uniaxial crystals

Anno: 2002

Autori: De Nicola S., Ferraro P., Finizio A., De Natale P., Grilli S., Pierattini G.

Affiliazione autori: Istituto di Cibernetica del CNR “Edoardo Caianiello”, Compr. “A. Olivetti”, Fabbr. 70, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
Istituto Nazionale di Ottica Applicata, Sez. di Napoli c/o Istituto di Cibernetica del CNR “Edoardo Caianiello”, Compr. “A. Olivetti”, Fabbr. 70, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy

Abstract: We report a new interferometric technique for measuring the ordinary and extraordinary refractive indices of uniaxial crystals. The technique is based on the measurement of the rotation-dependent phase changes of the optical path length in crystal plates. Accurate measurement of the phase shift as a function of the rotation of the sample is achieved by using a fast-Fourier-transform based fringe analysis method for phase retrieval. The principle of the method is discussed and measurements of the ordinary and extraordinary refractive indices of a lithium niobate crystal are reported. (C) 2002 Elsevier Science B.V. All rights reserved.

Giornale/Rivista: OPTICS COMMUNICATIONS (PRINT)

Volume: 202 (1-3)      Da Pagina: 9  A: 15

Parole chiavi: Crystals; Fast Fourier transforms; Lithium niobate; Moire fringes; Phase shift; Refractive index, Uniaxial crystals, Interferometry
DOI: 10.1016/S0030-4018(01)01719-9

Citazioni: 14
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-05
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