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Journal of Synthetic Crystals ›› 2026, Vol. 55 ›› Issue (4): 594-602.DOI: 10.16553/j.cnki.issn1000-985x.2025.0233

• Research Articles • Previous Articles     Next Articles

Design and Implementation of Acousto-Optic Modulator with High Diffraction Efficiency

WANG Chengqiang1,2(), XU Zhihong1, ZOU Liner2, LU Hao3, WANG Shuaihua3(), WU Shaofan3   

  1. 1.Castech. Inc,Fuzhou 350003,China
    2.School of Physics and Materials Science,Nanchang University,Nanchang 330031,China
    3.Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350003,China
  • Received:2025-11-12 Online:2026-04-20 Published:2026-05-19
  • Contact: WANG Shuaihua

Abstract: This paper introduces an acousto-optic modulator (AOM) featuring high diffraction efficiency and a large aperture. The AOM is designed for operation at 1 064 nm, with an effective aperture of 10 mm and a center operating frequency of 80 MHz. Low-absorption quartz was selected as the acousto-optic medium, while high-efficiency lithium niobate served as the piezoelectric transducer. Through optimized design and bonding processes, combined with a heat-conductive and electrically conductive heat dissipation solution utilizing a pressure block and adhesive pad, a diffraction efficiency of 98.4% was achieved. This AOM simultaneously exhibits excellent outstanding beam quality and high beam pointing stability. The research provides a critical high-performance optical component for high-power laser applications.

Key words: diffraction efficiency; acousto-optic modulator; acousto-optic medium; quartz crystal; piezoelectric transducer; lithium niobate; pressure block patch thermal conduction

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