*Jianan Fang¹, Kun Huang¹, Ming Yan¹, E Wu¹, Heping Zeng¹ (1. East China Normal Univ. (China))

*Kenichi N. Komagata¹, Michele Gianella², Pierre Jouy³, Filippos Kapsalidis⁴, Mehran Shahmohammadi⁴, Mattias Beck⁴, Renaud Matthey¹, Valentin J. Wittwer¹, Andreas Hugi³, Jérôme Faist⁴, Lukas Emmenegger², Thomas Südmeyer¹, Stéphane Schilt¹ (1. Lab. Temps-Fréquence, Univ. de Neuchâtel (Switzerland), 2. Lab. for Air Pollution / Environmental Tech., Empa (Switzerland), 3. IRsweep AG (Switzerland), 4. Inst. for Quantum Electronics, ETH Zurich (Switzerland))

*Kenichi N. Komagata¹, Simon Vogel², Valentin J. Wittwer¹, Mathieu Bertrand³, Stéphane Schilt¹, Jérôme Faist³, Thomas Südmeyer¹, Lukas Emmenegger², Michele Gianella² (1. Lab. Temps-Fréquence, Univ. de Neuchâtel (Switzerland), 2. Lab. for Air Pollution / Environmental Tech., Empa (Switzerland), 3. Inst. for Quantum Electronics, ETH Zurich (Switzerland))

Dong-Chel Shin¹, *Guseon Kang¹, Byung Soo Kim¹, Young-Jin Kim¹, Seung-Woo Kim¹ (1. KAIST (Korea))

*Akiko Nishiyama^1,2, Grzegorz Kowzan¹, Dominik Charczun¹, Piotr Masłowski¹ (1. Nicolaus Copernicus University in Torun (Poland), 2. National Institute of Advanced Industrial Science and Technology (AIST) (Japan))

*Kazumichi Yoshii¹, Naoya Kuse^1,2, Kazuki Inoue², Ryo Mitsumoto², Yoshiaki Nakajima³, Takeshi Yasui^1,2, Kaoru Minoshima^1,3 (1. Inst. of Post-LED Photonics, Tokushima Univ. (Japan), 2. Tokushima Univ. (Japan), 3. Univ. of Electro-Commun. (Japan))

*Jiajie Li¹, Akifumi Asahara¹, Haochen Tian^1,2, Kazumichi Yoshii³, Takashi Kato¹, Yoshiaki Nakajima^1,4, Kaoru Minoshima^1,3 (1. The University of Electro-Communications (Japan), 2. Research Fellow of the Japan Society for the Promotion of Science (JSPS) (Japan), 3. pLED Tokushima University pLED (Japan), 4. Toho University (Japan))