TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.26.24 TI - Landmarks: The First Laser to Stay On JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 26 IS - SP - 24 EP - PY - 2010/12/10/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.26.24 A1 - Lindley, David ER -