中国激光, 1997, 24 (8): 7210, 网络出版: 2006-10-31
光束相干驱动声子场提高SBS相位共轭保真度稳定性
Beam Interference Driving Acoustic Wave Enhances the Stability of SBS Phase conjugation Fidelity
受激布里渊散射 相位共轭保真度 光束相干驱动 stimulated Brillouin scattering phase conjugation fidelity beam interference drive
摘要
光束相干引起的电致伸缩能驱动声子波,从而能加强受激布里渊散射(SBS),提高相位共轭保真度稳定性。对折反池结构,采用2 ns陡前沿的脉冲光泵浦,将双级钕玻璃放大器和SBS池作为整体,测量了其相位共轭保真度。观测到输出激光的能量远场空间分布和相位共轭保真度稳定性在光束夹角θ≌5 mrad时明显优于θ＞30 mrad。
Abstract
The electrostrictive force induced by beam interference can drive the acoustic wave,and enhance the stabillty of stimulated Brillouin scattering (SBS) phase conjugation fidelity. For the reflecting cell configuration pumped with a 2ns steep leading edge laser pulse, taking a two stage Nd glass amplifier and a SBS cell as a whole,it is shown that the measured far field distribution and phase conjugation fidelity of the output laser beam are more stable for θ≌5 mrad than those for θ>30 mrad.
何伟明, 吕志伟, 王骐, 马祖光. 光束相干驱动声子场提高SBS相位共轭保真度稳定性[J]. 中国激光, 1997, 24(8): 7210. 何伟明, 吕志伟, 王骐, 马祖光. Beam Interference Driving Acoustic Wave Enhances the Stability of SBS Phase conjugation Fidelity[J]. Chinese Journal of Lasers, 1997, 24(8): 7210.
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