TY - JOUR AU - Kitching, John AU - Hollberg, Leo AU - Knappe, Svenja AU - Wynands, R. C2 - Optics Letters DA - 2001-01-01 LA - en M1 - 26 PB - Optics Letters PY - 2001 TI - Frequency-Dependent Optical Pumping Effects in Driven, Three-Level Systems ER -