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Effective Nonchain HF Laser Excited by a Self-Sustained Discharge

机译:自持续放电激发的有效非链式HF激光

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摘要

Lasing and discharge in mixtures of SF_6 with hydrogen and hydrocarbons are investigated. If the chemical reaction is initiated by a self-sustained discharge (a generator with both an inductive and capacitive energy storage can be used), the maximum lasing efficiency is attained at high values of the ratio E/p (where E is the electric field intensity and p is the pressure in the mixture) if shaped electrodes and preionization of the discharge gap are employed. For the first time, the lasing efficiency obtained in a nonchain HF laser is as high as 10% of the energy deposit and 4.5% of the stored energy for a specific radiation energy of ≈ 140 J/(1 atm). At high efficiencies, the emission spectrum of the nonchain HF laser significantly broadens and cascade lasing at P(3-2) → P(2-1) → P(1-0) vibrational transitions for several rotational lines is realized.
机译:研究了SF_6与氢和碳氢化合物的混合物中的激光发射和放电。如果化学反应是由自持放电引发的(可以使用同时具有感应和电容能量存储的发生器),则在高比率E / p(其中E是电场)下可获得最大激光发射效率。强度和p是混合物中的压力)如果使用成形电极和放电间隙的预电离。对于≈140 J /(1 atm)的比辐射能,非链式HF激光器首次获得的激光发射效率高达能量沉积的10%和存储能量的4.5%。在高效率下,非链式HF激光器的发射光谱显着加宽,并实现了多条旋转线在P(3-2)→P(2-1)→P(1-0)振动跃迁处的级联激射。

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