TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.17.3 TI - A 75-kilometer-long Laser JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 17 IS - SP - 3 EP - PY - 2006/01/26/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.17.3 A1 - Putney, Margaret ER -