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Proceedings Paper

Linearization schemes for Pockels cell light intensity modulators
Author(s): A. Garcia-Weidner; C. Torres Torres; Anatolii V. Khomenko; M. A. Garcia-Zarate
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Paper Abstract

We present two optoelectronic schemes that enhance the linearity of light intensity modulators based on the Pockels effect. The first scheme consists in a Sagnac interferometer which has an electro-optic modulator in the loop of the interferometer. The linearity is improved by feedback which uses part of the output light intensity to generate an electrical signal that is directed to the Pockels cell. The second scheme consists of two Pockels cells placed between two polarizers. The linearity is improved by properly choosing the orientation of the crystal axes as well as the two DC bias-voltages applied to the cells. The theoretical and experimental analysis of the proposed schemes are presented.

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.530024
Show Author Affiliations
A. Garcia-Weidner, Ctr. de Investigacion Cientifica y de Estudios Superiores de Ensenada (Mexico)
C. Torres Torres, Ctr. de Investigacion Cientifica y de Estudios Superiores de Ensenada (Mexico)
Anatolii V. Khomenko, Ctr. de Investigacion Cientifica y de Estudios Superiores de Ensenada (United States)
M. A. Garcia-Zarate, Ctr. de Investigacion Cientifica y de Estudios Superiores de Ensenada (Mexico)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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