Multi-wavelength holography in Bi12TiO20 crystals:: Applications in refractometry

被引：18

作者：

Barbosa, E. A.

Verzini, R.

Carvalho, J. F.

机构：

[1] Univ Estadual Paulista, Fac Tecnol Sao Paulo, Lab Opt Aplicada, BR-01124060 Sao Paulo, Brazil

[2] Univ Fed Goias, Inst Fis, BR-94001970 Goiania, Go, Brazil

来源：

OPTICS COMMUNICATIONS | 2006年 / 263卷 / 02期

关键词：

holographic interferometry; photorefractive crystals; refractometry;

D O I：

10.1016/j.optcom.2006.01.049

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a recent development in holography with multimode, large free-spectral range (FSR) diode lasers in photorefractive sillenite crystals. A novel refractometry method based on this type of holographic recording in Bi12TiO20 (BTO) crystals is proposed. The holographic image of a prism-shaped transparent sample appears covered of interference fringes, and as the sample is properly translated, the fringes run along the holographic image. An expression providing the refractive index of the medium as a function of the sample displacement and the correspondent number of running fringes was derived. The refractive indexes of optical (BK7) glass, ethanol, hexan, cumene and aqueous solution of NaCl with different concentrations were measured in order to test the method. The obtained results are in good agreement with the ones reported in literature or measured by us using a commercial Abbe refractometre. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：189 / 196

页数：8

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