*Masahiko Tani¹, Keisuke Tomonaga¹, Hideaki Kitahara¹, Takashi Furuya¹, Akihiro Izumi¹, Mary Clare Sison Escaño¹ (1. University of Fukui)

*Masanobu Haraguchi¹, Kenya Izumi², Toshihiro Okamoto¹, Kenzo Yamaguchi¹, Fumiyoshi Kuwashima³, Masahiko Tani⁴ (1. Institute of post-LED photonics, Tokushima University, 2. Graduate School of Tokushima University, 3. Department of Engineering, Fukui University of Technology, 4. Reserach Center for Development of Far-infrared Region, University of Fukui)

*Takeshi Moriyasu¹, Shudai Katono¹, Hideaki Kitahara¹, Masahiko Tani¹, Fumiyoshi Kuwashima², Mitsutaka Kumakura¹ (1. University of Fukui, 2. Fukui University Of Technology)