Multi-directional shearography based on multiplexed Mach-Zehnder interference system Zhong, Shimin ; Sun, Fangyuan ; Wu, Shuangle ; Bao, Fengqing ; Wang, Yonghong Abstract Publication: Journal of Modern Optics Pub Date: February 2020 DOI: 10.1080/09500340.2020.1733115 Bibcode: 2020JMOp...67..346Z