1. Key Laboratory of Materials for High‐Power LaserShanghai Institute of Optics and Fine MechanicsChinese Academy of Science Shanghai 201800 China
2. Department of Optical Science and Engineering and Shanghai Engineering Research Center of Ultra‐Precision Optical ManufacturingFudan University Shanghai 200433 China
3. State Key Laboratory of High Performance Ceramics and Superfine MicrostructuresShanghai Institute of CeramicsChinese Academy of Sciences Shanghai 200050 China
4. State Key Laboratory of Surface Physics and Department of PhysicsFudan University Shanghai 200083 China
5. Institute of Physics and Center of Interface ScienceCarl von Ossietzky Universität Oldenburg Oldenburg D‐26129 Germany
6. IFSA Collaborative Innovation CenterShanghai Jiao Tong University Shanghai 200240 China