Thin film electro-optic modulator based on single crystal of N-(4-nitrophenyl)-(L)-prolinol (NPP) grown from melt by the modified Bridgman method

Zhifu Liu*, Sergey S. Sarkisov, Michael J. Curley, Alexander Leyderman, Charles Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We discuss the plate-guiding method of growing micrometer-thick single crystal films of electro-optic organic material N-(4-nitrophenyl)-(L)-prolinol. This approach has the advantages of full control over the thickness of the film and selection of a proper seed for initial crystal growth. Characterization of the electro-optic properties of the films is performed using the intensity modulation technique with a low (of the order of 10 V) alternating driving voltage. Both the fundamental and double-frequency responses are used for the characterization. The electro-optic effect is pseudolongitudinal since the configuration of the experiment is that of a longitudinal intensity modulator. The main contribution to the effect originated from the transverse component of the external electric field. By purely electro-optic means we determine the orientation of the dielectric axes and measure the half-wave voltage, the figure of merit, and electro-optic coefficients r12 and r22 to be 3.24 kV and 99.2, 461, and 154 pm/V, respectively. We also find that electro-optic coefficients r61 and r63 are two orders of magnitude less than r12 and r22.

Original languageEnglish (US)
Pages (from-to)803-812
Number of pages10
JournalOptical Engineering
Volume42
Issue number3
DOIs
StatePublished - Mar 2003

Keywords

  • Electro-optic coefficients
  • Electro-optic modulator
  • Organic electro-optic crystals
  • Plate-guiding method
  • Single crystal film
  • Single-crystal films

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

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