单池单焦点及单池双焦点相位共轭度研究

Investigation of the Fidelity of Phase Conjugation of Single cell with One Focus and Single cell with Two Focuses

报道了单池单焦点及单池双焦点两种情况下的受激布里渊散射相位共轭度。结果表明：单池单焦点时相位共轭度随入射能量的升高而略有下降；单池双焦点时相位共轭度敏感地依赖于两焦点的距离。当两焦点距离很近时，相位共轭度与单池单焦点比较基本不变；当两焦点相距较远时，相位共轭度得到提高，最大增加量可达１３％。对此作者给予解释，实验结果验证这种解释是合理的。

This paper reports on the fidelity of Stimulated Brillouin Scattering of single cell with one focus (SCOF) and single cell with two focuses (SCTF). The results showed that in the case of SCOF the fidelity of SBS decreased slightly with the pump energy increasing, but for the SCTF, the fidelity is sensitive to the length of the two focuses. When the length is short, the fedility is almost unchanged, however, when the length is long, the fidelity increased and the biggest enhencement is up to 13%. An explanation to this phenomenon is given. The experimental results support this interpretation.