Fig. 1. Acousto-optic deflector with single transducer

Fig. 2. Acousto-optic deflector with two transducers. (a) Acoustic phase plane; (b) acoustic energy distribution

Fig. 3. Conventional step-structured acousto-optic deflector. (a) Acoustic phase plane at center frequency; (b) acoustic energy distribution at center frequency

Fig. 4. Acousto-optic deflector of two transducers with delay lines

Fig. 5. Acoustic beam steering in the acousto-optic deflector of two transducers with delay lines. (a) Two angles as functions of frequency; (b) tracking error ζ

Fig. 6. Acoustic phase plane and acoustic energy distribution of acousto-optic deflector of two transducers with delay lines. (a)(d) At low frequency; (b)(e) at center frequency; (c)(f) at high frequency

Fig. 7. Bragg loss versus relative frequency in the acousto-optic deflector. (a) Two transducers with delay lines; (b) single transducer versus two transducers with delay lines; (c) two transducers versus two transducers with delay lines

Fig. 8. Matching layer model of piezoelectric transducer. (a) Structure of conventional single matching layer; (b) structure of sandwich matching layers

Fig. 9. Two structures of matching layers and their 3 dB transducer bandwidths. (a) Structure of conventional single matching layer; (b) structure of sandwich matching layers

Fig. 10. Thickness parameters of two matching layer structures. (a) Structure of conventional single matching layer; (b) structure of sandwich matching layers

Fig. 11. Acousto-optic deflector

Fig. 12. Experimental set-up diagram

Fig. 13. Experimental test diagram

Fig. 14. Diffraction efficiency curves of acousto-optic deflectors with four structures