학술논문
Cascaded parametric down-conversion on backward terahertz-wave parametric oscillation / バックワード・テラヘルツ波パラメトリック発振におけるカスケード波長変換
Document Type
Journal Article
Author
Source
応用物理 / Oyo Buturi. 2022, 91(1):32
Subject
Language
Japanese
ISSN
0369-8009
2188-2290
2188-2290
Abstract
In recent years, terahertz-wave researches have made remarkable progress toward practical applications through vigorous R&D in both the photonics and electronics fields. Backward terahertz-wave parametric oscillation (TPO) is a novel TPO with compactness that produces high-power terahertz-wave output simply by injecting near-infrared pulsed laser into an artificial periodically poled lithium niobate (PPLN) crystal. Potentially, the broadband frequency tunability that continuously covers the sub-THz frequency range would be expected. Recently, basic experiments for imaging applications have also been started. In this paper, we introduce the cascade conversion, which improves the quantum conversion efficiency.