TY - JOUR PB - American Physical Society ID - 10.1103/PhysRevFocus.14.6 TI - Photon Marathon JF - Physical Review Focus JA - Phys. Rev. Focus J1 - FOCUS VL - 14 IS - SP - 6 EP - PY - 2004/07/30/ UR - http://link.aps.org/doi/10.1103/PhysRevFocus.14.6 A1 - Wald, Chelsea ER -