**Author details**

Shin'ichiro Hayashi1,2\*, Kouji Nawata2 , Kodo Kawase3,2 and Hiroaki Minamide2

\*Address all correspondence to: hayashi@nict.go.jp

1 Collaborative Research Laboratory of Terahertz Technology, Terahertz Technology Research Center, National Institute of Information and Communications Technology (NICT), Tokyo, Japan

2 RIKEN Center for Advanced Photonics, Sendai, Japan

3 Department of Electrical and Electronic Engineering and Information Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Japan
