publication . Article . 2016

Expansion of the tuning range of injection-seeded terahertz-wave parametric generator up to 5 THz

Murate, Kosuke; Hayashi, Shin'ichiro; Kawase, Kodo;
Open Access English
  • Published: 01 Aug 2016 Journal: Applied Physics Express, volume 9, issue 8, pages 82,401-82,401 (issn: 1882-0778, Copyright policy)
  • Publisher: IOP publishing
In this paper, we report the improvement of the frequency tuning range of an injection-seeded terahertz (THz)-wave parametric generator (is-TPG). A significant previous limitation was the high absorption coefficient in the higher-frequency region of a MgO:LiNbO3 crystal. Here, we inclined the crystal slightly, so that a fraction of the pump beam was internally reflected at the THz-wave exit surface of the crystal. In this configuration, it was easier for a higher-frequency THz wave to reach the crystal surface, because the center core region of the pump beam was closer to the exit surface. As a result, the upper limit of the frequency tuning range increased from...
arxiv: Physics::Optics
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Article . 2016
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