A number of OH B(2)Sigma (+)-X(2)Pi vibration-rotation spectra have been obtained using laser-induced fluorescence (LIF). Vibrationally excited OH(X,v " = 6-9) was formed through the reaction of H with O-3. and the v ", J " -dependent populations were characterized through synthetic spectral fitting of the B-X 0-v " spectral data. The populations have been partially relaxed by collisions in the source region. The OH(B-X) 0-v " relative band intensities have been determined and agree with previous theoretical values. Several OH(B,v " = 0) J ' -dependent collision-free lifetimes have been measured; the lifetimes decrease rapidly with J '. The B (2)Sigma (+) state is weakly predissociated through a combination of spin-orbit and L-uncoupling ("gyroscopic") perturbation interactions with the nearby 2 (2)Pi state. Although the OH B-X LIF technique cannot be used to monitor high rotational levels, it is well-suited for detecting the populations of high vibrational levels of the X (2)Pi state because of favorable Franck-Condon overlap. it also allows for operation at much lower reactant densities than is possible using the less sensitive OH chemiluminescence detection technique, mitigating the risk of unforeseen chemistry from metastable-metaslable reactions. These results should add confidence in deriving accurate OH X (2)Pi v " ,J " -dependent populations from B-X spectra.