YUAN LUO2018-09-102018-09-102013http://www.scopus.com/inward/record.url?eid=2-s2.0-84875748681&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/379129Phase-preserved optical elevatorjournal article10.1364/OE.21.006650