TY - JOUR AU - Justin Bohnet AU - Zilong Chen AU - J. Weiner AU - Kevin Cox AU - James Thompson BT - Physical Review A DA - 2013-07 DO - 10.1103/PhysRevA.88.013826 PY - 2013 EP - 013826 T2 - Physical Review A TI - Active and passive sensing of collective atomic coherence in a superradiant laser UR - http://link.aps.org/doi/10.1103/PhysRevA.88.013826 VL - 88 SN - 1050-2947 ER -