Browse Prior Art Database

Magneto Optic Shutter

IP.com Disclosure Number: IPCOM000094845D
Original Publication Date: 1965-Jun-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Friedman, HL: AUTHOR

Abstract

A magnetic field is used to align the molecules of a liquid-crystalline phase to produce a phase that rotates the plane of polarization of a light beam. The shuttering device has the arrangement shown in the drawing. The optimum orientation of the magnetic field is not indicated.

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Magneto Optic Shutter

A magnetic field is used to align the molecules of a liquid-crystalline phase to produce a phase that rotates the plane of polarization of a light beam. The shuttering device has the arrangement shown in the drawing. The optimum orientation of the magnetic field is not indicated.

A high degree of alignment of the molecules in certain liquid-crystalline phases is obtained by applying a moderate magnetic field. For example, in the nematic phase of a high degree of alignment is attained with a field of one or two kilogauss. See Chemical and Engineering News, March 16, 1964, p. 42.

A more sensitive arrangement than the one referred to uses, in place of the nematic phase, a simple solution of the nematogen. This is adjusted to a concentration just below the concentration required to produce a two-component nematic phase. A sufficient magnetic field applied to this solution induces the formation of the nematic phase.

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