Scholarlink

<p>Achieving multifunctional reconfigurability in terahertz devices typically requires complex multi-material structures. This paper presents a single-active-material system: a metasurface driven exclusively by the phase transition of vanadium dioxide, enabling dynamic transitions between ultra-wideband absorption (1.23–2.69&#xa0;THz, &gt; 95% absorptance) and multi-band polarization conversion. The polarization conversion function achieves linear-to-linear conversion with an efficiency exceeding 90% across two frequency bands while incorporating linear-to-circular conversion capabilities. Beyond this primary switching functionality, the anisotropic design offers a second degree of control: the output polarization state can be continuously tuned by varying the incident polarization angle <i>φ</i>. Specifically, left-handed circularly polarized light is generated when <i>φ</i> = 0°, right-handed circularly polarized light when <i>φ</i> = 90°, and linearly polarized light when <i>φ</i> = 45°.This dual control capability achieved within a single material system provides a structurally simplified yet functionally versatile platform for integrated reconfigurable terahertz photonics.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Dual-Knob Control in a VO2 Metasurface: Thermal Switching of Function and Polarization-Angle Tuning of State

  • 期刊论文

  • 发表日期：

    2026年5月25日

查看全文
  • Yinfang Lu,
  • Xin-Hua Deng,
  • Guifang Zhang,
  • Haitao Lu,
  • Lingfeng Mei,
  • Yinhao Liu,
  • Qinghua Liao

摘要

Achieving multifunctional reconfigurability in terahertz devices typically requires complex multi-material structures. This paper presents a single-active-material system: a metasurface driven exclusively by the phase transition of vanadium dioxide, enabling dynamic transitions between ultra-wideband absorption (1.23–2.69 THz, > 95% absorptance) and multi-band polarization conversion. The polarization conversion function achieves linear-to-linear conversion with an efficiency exceeding 90% across two frequency bands while incorporating linear-to-circular conversion capabilities. Beyond this primary switching functionality, the anisotropic design offers a second degree of control: the output polarization state can be continuously tuned by varying the incident polarization angle φ. Specifically, left-handed circularly polarized light is generated when φ = 0°, right-handed circularly polarized light when φ = 90°, and linearly polarized light when φ = 45°.This dual control capability achieved within a single material system provides a structurally simplified yet functionally versatile platform for integrated reconfigurable terahertz photonics.