An electro-optic modulation technique for direct and accurate measurement of birefringence

Badr Eddine Benkelfat; El Houssine Horache; Qin Zou; Bruno Vinouze

doi:10.1016/S0030-4018(03)01539-6

An electro-optic modulation technique for direct and accurate measurement of birefringence

Badr Eddine Benkelfat
, El Houssine Horache
, Qin Zou
, Bruno Vinouze

CNRS SAMOVAR UMR 5157
ENST Bretagne

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

We report a convenient and accurate technique for measuring the optical path difference induced by a birefringent crystal. The method is based on the transmission of a low-frequency signal by the electro-optic amplitude modulation of a monochromatic light source. The linear superposition principle of the induced birefringence and the electro-optic effect are employed in the analysis of the optical parameters. Birefringence measurements at the wavelength 0.6328 μm for some common nematic liquid crystal cells are presented. The measurement accuracy is close to 10^-3. In addition, the phase shift of a twisted-nematic liquid crystal spatial light modulator, which is now widely used in optical processing systems, is determined as a function of the gray-scale level.

Original language	English
Pages (from-to)	271-278
Number of pages	8
Journal	Optics Communications
Volume	221
Issue number	4-6
DOIs	https://doi.org/10.1016/S0030-4018(03)01539-6
Publication status	Published - 15 Jun 2003
Externally published	Yes

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title = "An electro-optic modulation technique for direct and accurate measurement of birefringence",

abstract = "We report a convenient and accurate technique for measuring the optical path difference induced by a birefringent crystal. The method is based on the transmission of a low-frequency signal by the electro-optic amplitude modulation of a monochromatic light source. The linear superposition principle of the induced birefringence and the electro-optic effect are employed in the analysis of the optical parameters. Birefringence measurements at the wavelength 0.6328 μm for some common nematic liquid crystal cells are presented. The measurement accuracy is close to 10-3. In addition, the phase shift of a twisted-nematic liquid crystal spatial light modulator, which is now widely used in optical processing systems, is determined as a function of the gray-scale level.",

author = "Benkelfat, \{Badr Eddine\} and Horache, \{El Houssine\} and Qin Zou and Bruno Vinouze",

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T1 - An electro-optic modulation technique for direct and accurate measurement of birefringence

AU - Benkelfat, Badr Eddine

AU - Horache, El Houssine

AU - Zou, Qin

AU - Vinouze, Bruno

PY - 2003/6/15

Y1 - 2003/6/15

N2 - We report a convenient and accurate technique for measuring the optical path difference induced by a birefringent crystal. The method is based on the transmission of a low-frequency signal by the electro-optic amplitude modulation of a monochromatic light source. The linear superposition principle of the induced birefringence and the electro-optic effect are employed in the analysis of the optical parameters. Birefringence measurements at the wavelength 0.6328 μm for some common nematic liquid crystal cells are presented. The measurement accuracy is close to 10-3. In addition, the phase shift of a twisted-nematic liquid crystal spatial light modulator, which is now widely used in optical processing systems, is determined as a function of the gray-scale level.

AB - We report a convenient and accurate technique for measuring the optical path difference induced by a birefringent crystal. The method is based on the transmission of a low-frequency signal by the electro-optic amplitude modulation of a monochromatic light source. The linear superposition principle of the induced birefringence and the electro-optic effect are employed in the analysis of the optical parameters. Birefringence measurements at the wavelength 0.6328 μm for some common nematic liquid crystal cells are presented. The measurement accuracy is close to 10-3. In addition, the phase shift of a twisted-nematic liquid crystal spatial light modulator, which is now widely used in optical processing systems, is determined as a function of the gray-scale level.

U2 - 10.1016/S0030-4018(03)01539-6

DO - 10.1016/S0030-4018(03)01539-6

M3 - Article

AN - SCOPUS:0038044639

SN - 0030-4018

VL - 221

SP - 271

EP - 278

JO - Optics Communications

JF - Optics Communications

IS - 4-6

ER -

An electro-optic modulation technique for direct and accurate measurement of birefringence

Abstract

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