@article{123686, author = {John Kitching and Hugh Robinson and Leo Hollberg and Svenja Knappe and R. Wynands}, title = {Optical-pumping noise in laser-pumped, all-optical microwave frequency references}, year = {2002}, number = {18}, month = {2002-01-01}, publisher = {Journal of the Optical Society of America B-Optical Physics}, language = {en}, }