#author("2020-01-15T23:12:29+00:00","default:hiroshi","hiroshi") #author("2020-06-17T20:12:02+00:00","default:hiroshi","hiroshi") The 9th Applied Optics and Photonics China (AOPC 2020) 27-29 June 2020 China National Convention Center, Beijing, China https://www.csoe.org.cn/meeting/AOPC2020/ rescheduled to 30 November (registration) to December 2020