种子场诱导单池SBS脉冲波形保真的实验研究

Experimental research of pulse-shape fidelity in seeded single-cell SBS generator

摘要: 提出利用种子场诱导单池受激布里渊散射(SBS)结构获得与抽运光脉冲波形高保真的Stokes放大光脉冲,分别对稳态抽运和瞬态抽运情况下Stokes脉冲波形在不同焦距透镜下、随种子光强的变化进行了实验研究,得到了90%的脉冲波形保真度.实验结果表明,种子场诱导的SBS PCM可以获得与抽运光脉冲波形保真的Stokes放大光脉冲,并为其在ICF激光驱动系统中的潜在应用提供了依据.

Abstract: A seeded single-cell SBS generator is suggested to achieve high pulse-shape fidelity of SBS to that of the pump.Dependences of SBS pulse shapes on Stokes seed intensity pumped by static field and transient field are experimentally investigated.Pulse-shape fidelity of 90% is obtained.Experimental results show that output Stokes pulses from this SBS geometry are of high pulse-shape fidelity to the pump,which provides the foundation for its further potential application to ICF driver.