Accurate calibration of optical tweezers close to a glass surface using interference rings in backscattered lightFlavie Gillant, Julien Moreau, Maximilian U. Richly, Antigoni Alexandrou, Karen Perronet and Nathalie WestbrookJ. Eur. Opt. Society-Rapid Publ., 19 1 (2023) 28DOI: https://doi.org/10.1051/jeos/2023026