激光与光电子学进展, 2018, 55 (6): 061903, 网络出版: 2018-09-11
介质色散对交叉偏振波输出特性的影响 下载: 908次
Influence of Material Dispersion on Output Characteristics of Cross-Polarized Wave
非线性光学 交叉偏振波 介质色散 超短激光脉冲 nonlinear optics cross-polarized wave material dispersion ultrashort laser pulses
摘要
理论研究了介质色散对钛宝石超短激光脉冲在氟化钡(BaF2)晶体中产生交叉偏振波(XPW)输出特性的影响。通过数值模拟发现,考虑介质色散效应时,介质的色散效应使晶体中的XPW转换效率降低,产生XPW的脉冲宽度大于入射脉冲宽度的1/
3 ,饱和光强增大。结果表明,当短激光脉冲驱动时介质色散对XPW产生的影响不能忽略。
Abstract
The influence of material dispersion on the output characteristics of cross-polarized wave (XPW) in BaF2 crystal driven by Ti∶sapphire laser pulses is investigated theoretically. The numerical simulation results reveal that, when the material dispersion is considered, the energy conversion efficiency of the crystal decreases owing to the effect of the dispersion. The pulse duration of XPW is longer than 1/
3 duration of the incident pulse, and the saturation intensity increases. The results indicate that the influence of material dispersion on the output characteristics of XPW driven by short laser pulses cannot be neglected.
金丹, 金凌辉, 龚成. 介质色散对交叉偏振波输出特性的影响[J]. 激光与光电子学进展, 2018, 55(6): 061903. Dan Jin, Linghui Jin, Cheng Gong. Influence of Material Dispersion on Output Characteristics of Cross-Polarized Wave[J]. Laser & Optoelectronics Progress, 2018, 55(6): 061903.