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<p>Analysis of Second-harmonic-generation (SHG) in the ultraviolet regime has been performed in this work considering multimodal nonlinear guided wave-optics instead of ray-optics analogy for more practical realization of frequency conversion utilizing total-internal-reflection based optical rotation quasi-phase-matching technique (TIR-ORQPM). The concept of Faraday rotation has been implemented to trigger the chirality of the magneto-optic material (MO) under consideration and to control the spin of the polarization plane. The analysis has been exemplified for a radiation of 372&#xa0;nm continuous-wave, in KDP crystal, considering the influence of surface roughness, absorption loss, the nonlinear law of reflection and realized an efficiency of 2.8% by a computer aided simulation. A thin-film of KF has been installed in the surface of the substrate to make the operation more flexible.</p>

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Multimodal nonlinear guided wave approach for UV frequency doubling utilizing magneto-optic chirality-controlled TIR-ORQPM technique

  • 期刊论文

  • 发表日期：

    2026年3月24日

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  • Boilla Srinu,
  • Moumita Saha

摘要

Analysis of Second-harmonic-generation (SHG) in the ultraviolet regime has been performed in this work considering multimodal nonlinear guided wave-optics instead of ray-optics analogy for more practical realization of frequency conversion utilizing total-internal-reflection based optical rotation quasi-phase-matching technique (TIR-ORQPM). The concept of Faraday rotation has been implemented to trigger the chirality of the magneto-optic material (MO) under consideration and to control the spin of the polarization plane. The analysis has been exemplified for a radiation of 372 nm continuous-wave, in KDP crystal, considering the influence of surface roughness, absorption loss, the nonlinear law of reflection and realized an efficiency of 2.8% by a computer aided simulation. A thin-film of KF has been installed in the surface of the substrate to make the operation more flexible.