Analysis of an interferometer with acoustic surface waves on one mirror.
It has been demonstrated that surface waves propagating on one mirror of an interferometer form an optical diffraction grating. Experimentally confirmed analyses of an interferomet er with 95.5% reflectivity mirrors now indicate that a surface wave power density of 0.028 mW/mm.MHz is required to diffract 1% of transmitted light into the first order beam. This power can be diminished by a factor of more than 20 by increasing the mirror reflectivity to 99%.
Light diffraction efficiency of acoustic surface waves.
Measurements of the angular dependence of the efficiency of light diffraction by acoustic surface waves on crystalline quartz are presented. From these and other measurements on LiNbO(3) it is concluded that the largest diffraction efficiencies obtainable at present from acoustic surface waves are on the order of a few percent except in the special configuration where Bragg diffraction can be utilized. The significance of these measurements with respect to the operation of practical light deflection devices is discussed.
Conserved Quantities of a Class of Nonlinear Difference-Difference Equations
Higher-order conserved quantities of a class of nonlinear difference-difference equations which are related to the discrete-time Toda equation are obtained using the Miura transformations.