MODULATION OF THE LINEAR-OPTIC EFFECT AT MICROWAVE FREQUENCIES.
Abstract
A series of novel experiments on modulators made of several crystals stacked along the light path was performed, taking advantage of the fact that the two axes perpendicular to the optic axis in KDP are not completely equivalent. By rotating one of a pair of such crystals 90 degrees about its axis the modulation could be enhanced or degraded, depending on the relative orientation of the fast and slow axes in the two crystals. These original experiments on inhomogeneous light modulators led to the design of a new type of travelling-wavelike light modulator. The properties of this device have been analyzed, and its feasibility has been demonstrated with a prototype configuration of three crystals. The theoretical discussion is based on a review of classical crystal optics and the conventional theory of the electro-optic effect, and includes both a simple approximate solution and a more rigorous iterative solution to Maxwell's equations for non-linear dielectrics. Finally, an explicit survey of the general problem of microwave modulation has been made, with consideration having been given to both physical mechanisms and their experimental realization. The implications and conclusions of the present experimental study have been presented in this context.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1963
- Accession Number
- AD0600461
Entities
People
- Robert A. Meyers
Organizations
- Harvard University