Linearization schemes for Pockels cell light intensity modulators

A. Garcia-Weidner; C. Torres Torres; Anatolii V. Khomenko; M. A. Garcia-Zarate

doi:10.1117/12.530024

19 November 2003 Linearization schemes for Pockels cell light intensity modulators

A. Garcia-Weidner, C. Torres Torres, Anatolii V. Khomenko, M. A. Garcia-Zarate

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.530024
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

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.

Citation Download Citation

A. Garcia-Weidner, C. Torres Torres, Anatolii V. Khomenko, and M. A. Garcia-Zarate "Linearization schemes for Pockels cell light intensity modulators", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.530024

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