TY - JOUR AU - M. Zhu AU - C. Oates AU - John Hall BT - Optics Letters DA - Jan-01-1993 DO - 10.1364/OL.18.001186 PY - 1993 EP - 1186 T2 - Optics Letters TI - Improved hyperfine measurements of the Na 5p excited state through frequency-controlled Dopplerless spectroscopy in a Zeeman magneto-optic laser trap VL - 18 SN - 0146-9592 ER -