Development of Intense Terahertz Light Source for Forming Periodic Structures on Material Surface

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  • 物質表面周期構造形成を目指した高強度テラヘルツ波光源開発
  • ブッシツ ヒョウメン シュウキ コウゾウ ケイセイ オ メザシタ コウキョウド テラヘルツハ コウゲン カイハツ

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Abstract

<p>We have developed an intense terahertz wave source aiming at in-situ measurement of periodic surface structures induced by terahertz waves on solid materials with high-spatiotemporal resolution. An intense terahertz wave of 119 µJ was generated from a Lithium Niobate crystal induced with an intense laser with fluence of 25 mJ/cm2 by tilted pulse front method. By applying a negative chirp to the laser pulse, the pulse width spread inside the crystal was compensated, and the output of the terahertz wave was maximized.</p>

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