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Optical frequency scanning without deflection using an acoustooptic modulator

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2 Author(s)
Neev, J. ; Dept. of Phys., Colorado Sch. of Mines, Golden, CO, USA ; Kowalski, F.V.

A change in the RF frequency driving an acoustooptic modulator causes a change in the deflection of the diffracted light beam. It is found that for a certain angle of incidence upon multiple transducer acoustooptic modulators one can obtain diffracted beams which show no change in deflection for a change in acoustic frequency. However, the change in acoustic frequency is imparted to the optical beam. This effect occurs over an RF frequency band centered about the Bragg frequency. An explanation of this effect is presented

Published in:

Quantum Electronics, IEEE Journal of  (Volume:26 ,  Issue: 10 )