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

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.