Journal ArticleDOI
Hexamine electro-optic light modulators
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TLDR
In this paper, a half-wave voltage of 4.5 kV and extinction ratio of 2000:1 was achieved with a light aperture of f/10 by using gold leaf as electrode material and flexible mounts.Abstract:
Although hexamine exhibits a low electro-optic coefficient, large strain-free crystals offer practical devices for both DC and high frequency modulation at reduced operating voltages. A modulator with a light aperture of f/10 has a half-wave voltage of 4.5 kV and shows an extinction ratio of 2000:1. In a multipass mode the voltage can be reduced to less than 100 V but with a consequent loss of angular aperture and light transmission. Precautions taken during modulator construction in order to preserve crystal isotropy included the selection of gold leaf as electrode material and flexible mounts to support the section.read more
Citations
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Diffraction gratings (manufacture)
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Journal ArticleDOI
Electro-optic Lightning Detector
TL;DR: The design, alignment, calibration, and field deployment of a solid-state lightning detector is described, which recorded several hundred lightning electric field change excursions during five thunderstorms that occurred in the summer of 1998 at the NASA Marshall Space Flight Center in northern Alabama.
Book ChapterDOI
3. Optical Polarization
TL;DR: In this article, a double refractive index crystal known as calcite is used to demonstrate optical polarization, where light waves in two orthogonal planes are laterally separated after passing through calcite, resulting in two polarized images.
Journal ArticleDOI
Optical evidence of grown-in strain in solution-grown hexamethylenetetramine
TL;DR: In this paper, the authors report evidence of grown-in inhomogeneous strain affecting hexa methylene tetramine (HMT) crystals grown from ethanol-water solution.
References
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Journal ArticleDOI
Linear Electro-Optic Effects in Class 32, 6, 3 m, and Crystals 4¯3m
TL;DR: In this article, the effect of birefringent and optically active crystals on elliptically polarized light was studied with dc voltages at 5461 A in seven crystals belonging to classes 32, 6, 3m, and 4¯3m.
Journal ArticleDOI
The dielectric and electrooptical properties of a molecular crystal-hexamine
TL;DR: In this article, the crystal growth, dielectric properties, optical properties, and electrooptic effect of the cubic molecular crystal, hexamine, were examined, and it was concluded that this material does possess certain advantageous properties.
Journal ArticleDOI
Linear Electro-Optic (Pockels) Effect in Hexamethylenetetramine: Influence of Crystal Strain
TL;DR: In this paper, the linear electro-optic (Pockels) effect has been measured in the organic molecular crystal hexamethylenetetramine, which was grown from water, alcohol, and chloroform solutions and from the vapor.
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