Leveraging ±1st-order Bragg diffraction synergy for bandwidth enhancement and frequency downshift in acousto-optic modulators. - Zixuan Zhong; Xueqiao Yuan; Wei Wu; Ziqi Zhong; Tongtian Ren; Tao Liu; Guolu Yin; Tao Zhu (Sci. China Inf. Sci., 2026)