1. Leibniz Institute of Photonic Technology, Albert-Einstein Straße 9, 07745 Jena, Germany
2. MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions, and Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, China
3. Institute of Physical Chemistry and Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Jena 07743, Germany
4. Research Center for Applied Sciences, Academia Sinica, 11529 Taipei, Taiwan
5. Department of Electrophysics, National Chiao Tung University, 30010 Hsinchu, Taiwan