Formulation for the design of birefringent phased-array Bragg cells in uniaxial crystals.
Tangential phase matching is generally used as an enhancement technique in the design of wideband acousto-optic deflectors operating in birefringent media. We present an exact formulation that describes the behavior of birefringent phased-array Bragg cells in uniaxial crystals. It is demonstrated that wideband deflection around a desired center frequency can be obtained while one has freedom of choice regarding the acoustic mode and interaction plane. Furthermore it is shown that some major disadvantages of the optically rotated and acoustically rotated tangential phase-matching configurations can be eliminated.
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AJ
Hoffman
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E
van Rooyen