Author Affiliations

Wei-Yun Liang,¹ Hyeyoung Ahn,^1,* Yungang Sang,^2,3 Yanrong Wang,^2,3 Jinwei Shi,^2,3 Soniya S. Raja,⁴ Yi-Hsien Lee,⁵ and Shangjr Gwo^2,6

¹Department of Photonics, National Chiao Tung University,1001 Ta Hsueh Road, Hsinchu, 30010, Taiwan

²Department of Physics, National Tsing-Hua University,1 Kuang Fu Rd. Hsinchu 30010, Taiwan

³Department of Physics and Applied Optics Beijing Area Major Laboratory, Beijing Normal University, Beijing 100875, P.R.C.

⁴Institute of NanoEngineering and MicroSystems, National Tsing-Hua University, Hsinchu 30010, Taiwan

⁵Department of Materials Science and Engineering, National Tsing-Hua University, Hsinchu 30013, Taiwan

⁶National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan

^*Corresponding author: hyahn@mail.nctu.edu.tw