Method and apparatus for the spectral range enlargement of acousto-optic tunable filters

@inproceedings{Gottlieb1986MethodAA,
  title={Method and apparatus for the spectral range enlargement of acousto-optic tunable filters},
  author={Milton S. Gottlieb and John J. Conroy},
  year={1986}
}
The invention relates to a method and an apparatus for enlarging the spectral range of an acousto-optic tunable filter by extending the operation of the transducer structure to its third harmonic. The transducer structure consists of a plurality of individual transducer elements in electrical communication through a switching network which modifies the total capacitance of the transducer structure to provide a satisfactory impedance match at both the fundamental and the third harmonic.