1. Korea Institute of Radiological and Medical Sciences (KIRAMS), Seoul 01812, South Korea
2. Department of Physics and Astronomy, Center for THz-driven Biomedical Systems, Seoul National University, Seoul 08826, South Korea
3. Center for Axion and Precision Physics Research, Institute for Basic Science, Daejeon 34141, South Korea
4. Seoul-Teracom, Inc., Gyeonggi-do Suwon 16229, South Korea