TY - JOUR AU - H Xia AU - J Cirac AU - S Swartz AU - B Kohler AU - D Elliott AU - John Hall AU - P Zoller C2 - Journal of the Optical Society of America B-Optical Physics DA - 1994-01-01 00:01:00 LA - en M1 - 11 PB - Journal of the Optical Society of America B-Optical Physics PY - 1994 TI - Phase shifts and intensity dependence in frequencymodulation spectroscopy ER -