中国物理B ›› 2026, Vol. 35 ›› Issue (5): 54206-054206.doi: 10.1088/1674-1056/ae0b39

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Dual-wavelength polarization-tunable holographic response in an azobenzene-containing film

Hong Chen(陈红)1, Pan Wang(王潘)2, Ziyao Lyu(吕子瑶)3, and Changshun Wang(王长顺)1,†   

  1. 1 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;
    2 Department of Information and Communications Engineering, Institute of Science Tokyo, Tokyo 1528550, Japan;
    3 State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, China
  • 收稿日期:2025-07-29 修回日期:2025-09-09 接受日期:2025-09-25 发布日期:2026-05-07
  • 通讯作者: Changshun Wang E-mail:cswang@sjtu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 62475148 and 62505028).

Dual-wavelength polarization-tunable holographic response in an azobenzene-containing film

Hong Chen(陈红)1, Pan Wang(王潘)2, Ziyao Lyu(吕子瑶)3, and Changshun Wang(王长顺)1,†   

  1. 1 State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China;
    2 Department of Information and Communications Engineering, Institute of Science Tokyo, Tokyo 1528550, Japan;
    3 State Key Laboratory of Space-Ground Integrated Information Technology, Beijing Institute of Satellite Information Engineering, Beijing 100095, China
  • Received:2025-07-29 Revised:2025-09-09 Accepted:2025-09-25 Published:2026-05-07
  • Contact: Changshun Wang E-mail:cswang@sjtu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 62475148 and 62505028).

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摘要： We report a polarization-tunable holographic system in an azobenzene-containing liquid crystal film enabled by dual-wavelength excitation. The 405-nm beam facilitates the accumulation of cis-isomers and enhances molecular mobility, while the 532-nm beams induce photoisomerization and polarization-selective molecular alignment. Their cooperative action yields a nonlinear holographic response, resulting in a twofold increase in diffraction efficiency compared to single-wavelength excitation. By tuning the polarization states of the 532-nm beams, a continuous transition from an amplitude to polarization grating is realized, together with passive all-optical switching. This approach offers a versatile strategy for dynamic holographic modulation, with potential applications in tunable photonic elements, polarization-selective optical devices, and reconfigurable optical switches driven by polarization control.

关键词: dual-wavelength, polarization-tunable, azobenzene

Abstract: We report a polarization-tunable holographic system in an azobenzene-containing liquid crystal film enabled by dual-wavelength excitation. The 405-nm beam facilitates the accumulation of cis-isomers and enhances molecular mobility, while the 532-nm beams induce photoisomerization and polarization-selective molecular alignment. Their cooperative action yields a nonlinear holographic response, resulting in a twofold increase in diffraction efficiency compared to single-wavelength excitation. By tuning the polarization states of the 532-nm beams, a continuous transition from an amplitude to polarization grating is realized, together with passive all-optical switching. This approach offers a versatile strategy for dynamic holographic modulation, with potential applications in tunable photonic elements, polarization-selective optical devices, and reconfigurable optical switches driven by polarization control.

Key words: dual-wavelength, polarization-tunable, azobenzene

中图分类号:  (Geometrical optics)

  • 42.15.-i
42.25.-p (Wave optics) 42.25.Hz (Interference) 42.25.Ja (Polarization)