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Abstract <p>We theoretically considered the possibility to exploit nonlinear Fabry–Pérot interferometers to differential gain of terahertz radiation in the field of a pump wave of the same frequency. It is shown that in a mirrorless nonlinear Fabry–Pérot interferometer, that consists of a crystalline quartz plate and which reflection is determined by Fresnel reflectivity only, the regime of maximal differential gain of radiation with central frequency at 1 THz can be observed at the plate thickness of near 1 mm and radiation intensity of 10<sup>8</sup>&#xa0;W&#xa0;cm<sup>–2</sup> order.</p>

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Differential Gain of THz Radiation in Crystalline Quartz in the Field of Pump Wave

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • I. I. Kazakov,
  • M. S. Guselnikov,
  • S. A. Kozlov

摘要

Abstract

We theoretically considered the possibility to exploit nonlinear Fabry–Pérot interferometers to differential gain of terahertz radiation in the field of a pump wave of the same frequency. It is shown that in a mirrorless nonlinear Fabry–Pérot interferometer, that consists of a crystalline quartz plate and which reflection is determined by Fresnel reflectivity only, the regime of maximal differential gain of radiation with central frequency at 1 THz can be observed at the plate thickness of near 1 mm and radiation intensity of 108 W cm–2 order.