Infrared emission following the photolysis of SO2 by a 193 nm laser pulse (20 ns. duration) was recorded with 500 ns time and 10 cm(-1) spectral resolution. Spectral analyses of the time-resolved spectra revealed the vibrationally excited nascent SO population distribution as (nu = 1)/(nu = 2)/(nu = 3)/(nu = 4)/(nu = 5) = 0.54 +/- 0.04, 1.00 +/- 0.03, 0.00 +/- 0.03, 0.01 +/- 0.03, and 0.10 +/- 0.03. The nascent SO was found to be rotationally excited with an average rotational temperature around 1000 K for nu = 1 and nu = 2 levels and 300 K for the nu = 5 level. The vibrationally excited SO likely originates from two distinct dissociation mechanisms; the nu = 1 and 2 populations are generated through intersystem crossing between the (C) over tilde state and a repulsive state (2(3)A'), and the nu = 5 population is generated through internal conversion from the (C) over tilde to the (X) over tilde state. Efficient V-V energy transfer from nascent vibrationally excited SO to SO2(nu(1)) is also observed. The appearance of the SO2(nu(1)) nu(1) = 2 emission, before that from the nu(1) = 1 population is consistent with the previous report that the Delta nu = -2 channel is more efficient than the Delta nu = -1 channel.