Accession Number : AD0700049

Title :   TRANSVERSE MODE ELECTRO-OPTIC MATERIALS.

Descriptive Note : Physical sciences research papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Armington,A. F. ; O'Connor,J. J.

Report Date : JAN 1970

Pagination or Media Count : 21

Abstract : Most electro-optic modulators presently used are crystals such as KDP which exhibit a longitudinal electro-optic effect. It has been demonstrated that a more efficient modulator can be produced when a crystal having a transverse electro-optic effect is employed. Generally these crystals are produced either from the melt or from fluxes. Since melt grown crystals must be cooled through several hundred degrees and often must undergo phase transitions, these crystals are generally highly strained. Flux grown crystals are also unsatisfactory because of the tendency to incorporate the flux into the lattice. In this paper a method of producing crystals with a transverse electro-optic effect at room temperature is presented which results in strain-free crystals of high purity. The principal material discussed is cuprous chloride which has the added advantage that it has transparency in the infrared range out to at least twenty microns. The system used for the evaluation of materials is discussed as well as results for cuprous chloride and other materials produced by room temperature techniques. This work has provided a significantly improved laser modulator material of potential value for communication systems and similar applications. (Author)

Descriptors :   (*OPTICAL MATERIALS, *ELECTROOPTICS), (*COPPER COMPOUNDS, CRYSTAL GROWTH), (*MODULATORS, LASERS), CHLORIDES, GELS, LASERS, MODULATION, LIGHT TRANSMISSION

Subject Categories : Lasers and Masers
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE