1. Shandong Provincial Key Laboratory of Optical Astronomy and Solar‐Terrestrial Environment Institute of Space Sciences Shandong University Weihai China
2. Physics Department University of New Brunswick Fredericton NB Canada
3. Bradley Department of Electrical and Computer Engineering Virginia Tech Blacksburg VA USA
4. Thayer School of Engineering Dartmouth College Hanover NH USA
5. Department of Physics and Astronomy University of Leicester Leicester UK