AUTHOR=Tsang P. W. M. , Poon Ting-Chung , Zhang Yaping , Ferraro Pietro TITLE=Editorial: Digital holography: Applications and emerging technologies JOURNAL=Frontiers in Photonics VOLUME=3 YEAR=2022 URL=https://www.frontiersin.org/journals/photonics/articles/10.3389/fphot.2022.1073297 DOI=10.3389/fphot.2022.1073297 ISSN=2673-6853