Abstract
A reflection-type electro-optic phase diffraction grating using the
novel transparent lead magnesium niobate-lead titanite (PMNT) electro-optic
ceramic is analyzed theoretically and implemented experimentally. The Au/Ti
interdigital electrodes are sputtered on one surface of ceramic wafer which
is used to change the material refractive index by the quadratic electro-optic
effect. The phase modulation characteristic and the optical beam diffraction
patterns induced by a controllable electric field are analyzed theoretically
and simulated numerically. Using a high electro-optic coefficient transparent
PMNT ceramic wafer, some experimental results are given to verify the theoretical
analysis and they are accordant very well. Finally, some potential applications
for the reflection-type electro-optic phase diffraction grating in the ultrafast
laser application areas are also discussed in this paper.
© 2012 IEEE
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