Transient absorption and emission and the measurement of T1 and T2 in the J O→1 rotational transition in OCS

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Abstract
Stark switching microwave experiments on transient absorption and transient emission that allow the measurement of T1 and T2 in the J = 0→1 transition in OCS are described. The results from the transient absorption experiments are T1 = (26±4) × 10−6 sec · mtorr and T2 = (33±7) × 10−6 sec · mtorr. The results of the transient emission experiments give T2 = (31±3) × 10−6 sec · mtorr. Thus, T1 = T2 within the experimental uncertainties. We also demonstrate the effects of π/2 and π pulses by using Stark switching.