Using the laser photolysis/laser-induced fluorescence (LP/LIF) pump-probe technique, the gas phase photodissociation dynamics of room temperature DNCO were studied at photolysis wavelengths of 193 and 248 nm. D atoms produced via DNCO ((X) over tilde(1)A’) + hv --> D(S-2) + NCO((X) over tilde (2) Pi) were detected by (2p P-2 <--- 1s S-2)-LIF using tunable narrow-band Lyman-alpha laser radiation (lambda(L alpha) approximate to 121.5 nm) generated by resonant third-order sum-difference frequency conversion of pulsed dye laser radiation. By means of a photolytic calibration method absolute cross sections for the direct photochemical D atom formation were measured to be sigma(D)(193 nm) = (5.5 +/- 0.5) x 10(-20) cm(2) molecule(-1) and sigma(D)(248 nm) = (1.2 +/- 0.2) x 10(-21) cm(2) molecule(-1). For the wavelength of 193 nm, the measurement of the optical absorption cross section sigma(DNCO)(193 nm) = (2.6 +/- 0.2) x 10(-19) cm(2) molecule(-1) allowed the direct determination of the D atom product quantum yield of phi(D)(193 nm) = (0.21 +/- 0.03). At the wavelength of 248 nm, where the optical absorption cross section was too small to be measured with reasonable accuracy, a kinetic calibration method was used to measure product quantum yields for D atom, phi(D)(248 nm) = (0.77 +/- 0.10), and for "spin-forbidden" ND(X (3) Sigma(-)) formation, phi(ND)(248 nm) = (0.23 +/- 0.10). From the D atom Doppler profiles, measured under collision-free conditions, the fraction of the available energy released as product translational energy was determined to be f(T)(D + NCO) = (0.44 +/- 0.04) for 193 nm and f(T)(D + NCO) = (0.64 +/- 0.17) for 248 nm photolysis wavelengths. In addition, using polarized photodissociation laser light, measurements were carried out in order to determine the anisotropy of the D atom product angular distribution. It was found that the value of the anisotropy parameter beta decreases from -(0.45 +/- 0.09) for a photolysis wavelength of 193 nm to -(0.01 +/- 0.10) at 248 nm, suggesting a moderately anisotropic distribution at the shorter wavelength and an effectively isotropic one at the longer wavelength. Comparisons are made with results from recent photodissociation dynamics studies of the isotopomer HNCO.