为了研究泵浦脉冲宽度对受激布里渊散射(SBS)相位共轭保真度的影响,分别采用CCl4、N-hexane、CS2三种不同的SBS介质,在泵浦脉宽分别为12 ns、7 ns和2 ns的情况下,采用列阵相机法对保真度进行实验研究.结果表明:泵浦脉宽对SBS相位共轭保真度有很大影响.当泵浦脉宽远大于介质声子寿命时,保真度保持较高数值,且比较稳定;当泵浦脉宽逐渐接近并近似等于声子寿命时,保真度的值开始逐渐降低,降低的幅度也逐渐增大,稳定性也开始变差;当泵浦脉宽减小到小于声子寿命时,保真度大幅度降低,波动性增大,相位共轭情况很差.
参考文献
| [1] | Ottusch J J,Rockwell D A.Stimulated Brillouin scattering phase conjugation fidelity fluctuations[J].Opt.Lett.,1991,16(6):369-371. |
| [2] | Brent Dane C,et al.Fidelity fluctuation in SBS phase conjugation at high input energies[J].SPIE,1992,1626:308-316. |
| [3] | Schelonka L P,et al.Effect of focal intensity on stimulated Brillouin scattering reflectivity and fidelity[J].Opt.Lett.,1988,13(1):42-44. |
| [4] | Andreyev N F,et al.Phase conjugation fidelity fluctuations for various stimulated Brillouin scattering mirror geometries[J].J.Opt.Soc.Am.B,1994,11(5):786-788. |
| [5] | Crofts G J,Damzen M J,Lamb R A.Experimental and theoretical investigation of two-cell stimulated-Brillouinscattering systems[J].J.Opt.Soc.Am.B,1991,8(11):2282-2288. |
| [6] | He Weiming,et al.Two-cell stimulated Brillouin scattering phase conjugation mirror compressing pulses width of Q switched YAG oscillator[J].Acta Optica Sinica (光学学报),1996,16(4):450-453 (in Chinese). |
| [7] | He Weiming,Lü Zhiwei,Wang Qi,et al.Pulse shape dependence of two cell stimulated Brillouin scattering phase conjugation mirror[J].Acta Optica Sinica (光学学报),1996,16(11):1576-1579 (in Chinese). |
| [8] | He Weiming,et al.Research of narrow pulse pump two-cell stimulated Brillouin scattering[J].Chinese Journal of Lasers (中国激光),1997,24(1):46-50 (in Chinese). |
| [9] | Zel'dovich B Ya,Popovichev V I,Ragul'skii V V,et al.Connection between the wave-fronts of the reflected and exciting light in stimulated Mandel'shtam-Brillouin scattering[J].JETP Lett.,1972,(15):109-113. |
| [10] | Lehmberg R H,et al.Numerical study of phase conjugation in stimulated backscatter with pump depletion[J].Opt.Commun.,1882,43(5):369-374. |
| [11] | Schelonka L P,et al.The fidelity of stimulated Brillouin scattering with weak abberations[J].Opt.Commun.,1987,64(3):293-296. |
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