TY  - JOUR
AU  - Porras, Miguel A.
AU  - Gonzalo Fonrodona, Isabel
AU  - Mondello, Alessia
PY  - 2003
DO  - 10.1103/PhysRevE.67.066604
SN  - 1539-3755
UR  - https://hdl.handle.net/20.500.14352/51361
T2  - Physical review E
AB  - We study the group velocity of pulsed light beams in vacuum. Gouy's phase associated with the diffraction of transversally limited pulses can create a strong anomalous dispersion in vacuum leading to highly superluminal and negative group velocities....
LA  - eng
M2  - 066604/1
PB  - American Physical Society
KW  - Propagation
TI  - Pulsed light beams in vacuum with superluminal and negative group velocities
TY  - journal article
VL  - 67
ER  -