Affiliation: | 1. Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany;2. Centre for Quantum Engineering and Space-Time Research — QUEST, Welfengarten 1, 30167 Hannover, Germany;3. Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover, Germany;4. OFS Denmark, Incubation Center, Priorparken 680, 2605 Brøndby, Denmark;1. School of Optoelectronic Science and Technology, National University of Defense Technology, Changsha, Hunan 410073, PR China;2. National and Provincial United Lab of Fiber Information Engineering Technology for Complicated Environment, Changsha, 410073, PR China;1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, and Shanghai Key Laboratory of Solid-State Laser and Application, Shanghai 201800, China;2. Center of Materials Science and Optoelectronics Engineering, University of the Chinese Academy of Sciences, Beijing 100049, China |