Absorption of $N_2$ laser beam by $S_2$ dimer is investigated by illuminating $S_2$ vapor in a all fused quartz cell with pulsed $N_2$ laser beam (λ=3371Å). Absorption of the laser beam is measured by using a spectrograph, and the vapor pressure of $S_2$ dimer is controlled by controlling the temperature $T_s$ of the cell and $T_r$ of the sulfur reservoir. It is found that $T_s$ near 800℃ and $T_r$ around 200℃ gives 30% absorption of the laser beam when the vapor cell is 14cm long. Emission from $S_2$ vapor is monitored spectrographically at λ=3700-4900˚A region but the superfluorescence is not recorded. It is believed that the pulse duration $\tau_n$ of the nitrogen laser used in the experiment is longer compared with $\tau_s$, lifetime of the B-state of $S_2$ molecule.
