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third harmonic conversion efficiency
相关语句
  三倍频转换效率
     For the bandwidth of 1.11 nm and the incident fundamental intensity between 3 GW/cm~2 and 8 GW/cm~2, the third harmonic conversion efficiency is 60%~70%, which has increased 30%~40% compared with that using the scheme of one doubler and one mixer.
     经优化后,带宽1.11nm时入射基频光强在3~8GW/cm2范围内的三倍频转换效率可保持在60%~70%,比采用单倍频单混频方案时增大了30%~40%。
短句来源
  “third harmonic conversion efficiency”译为未确定词的双语例句
     Relationship of Third Harmonic Conversion Efficiency and Phase Ripples for High-Intensity Laser
     强激光三次谐波转换效率与相位扰动的关系
短句来源
     For the incident fundamental field with the bandwidth of 11.2 nm and the intensity of 2~6 GW/cm~2,the third harmonic conversion efficiency of about 60 % can be achieved,which has increased about 40 % compared with the case without ASD method.
     经方案优化后,当入射基频光带宽11.2nm、光强2-6GW/cm2时的三倍频光转换效率可达到60%左右,比不采用ASD时的三倍频光转换效率提高了40%左右。
短句来源
     The results show that using the scheme of cascade crystals can improve the third harmonic conversion efficiency and increase the dynamic range of the broadband laser tripling.
     研究结果表明,使用两块级联的KDP晶体作为混频晶体,不仅能有效地提高带宽较宽条件下三倍频光的转换效率,还可以显著增大宽带三倍频的动态范围。
短句来源
     It found that this design can increase the third harmonic conversion efficiency of broad bandwidth,but the distance between two triplers has an important impact on the third harmonic conversion efficiency in the experiment.
     实验观察到这种方案可以有效提高宽带激光三次谐波转换效率,但混频晶体之间的距离对宽带三次谐波转换效率影响明显。
短句来源
  相似匹配句对
     Walk-off in the third harmonic generation
     离散效应对高强度激光三次谐波转换的影响
短句来源
     Third harmonic generation of femtosecond pulses
     飞秒激光的三次谐波转换
     Third Harmonic Conversion of Aberrated Laser Beam
     位相畸变三次谐波转换
短句来源
     CHARACTER RESARCH OF THIRD HARMONIC CONVERSION WITH CLBO CRYSTAL
     CLBO晶体用于三次谐波转换的特性研究
短句来源
     Third, the changes on c
     其三,文化心理的变化映射出民族区分到家族认同的基本轨迹。
短句来源
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As for the temporal phase modulated broadband laser, by using some numerical techniques such as split-step Fourier transformation and fourth-order Runge-Kutta method, the effect of the intensity and bandwidth of the incident fundamental field, as well as that of the lengths of the KDP crystals on the third harmonic conversion efficiency of broadband laser have been discussed. The parameters of the mixers for the scheme of one type I doubler, one type II mixer and one type I mixer in quadrature have been...

As for the temporal phase modulated broadband laser, by using some numerical techniques such as split-step Fourier transformation and fourth-order Runge-Kutta method, the effect of the intensity and bandwidth of the incident fundamental field, as well as that of the lengths of the KDP crystals on the third harmonic conversion efficiency of broadband laser have been discussed. The parameters of the mixers for the scheme of one type I doubler, one type II mixer and one type I mixer in quadrature have been optimized. The results show that using the scheme of cascade crystals can improve the third harmonic conversion efficiency and increase the dynamic range of the broadband laser tripling. For the bandwidth of 1.11 nm and the incident fundamental intensity between 3 GW/cm~2 and 8 GW/cm~2, the third harmonic conversion efficiency is 60%~70%, which has increased 30%~40% compared with that using the scheme of one doubler and one mixer.

针对时间位相调制的宽带激光,采用分步离散傅里叶变换及四阶龙格-库塔算法进行数值模拟计算。讨论了采用KDP晶体级联方式时,入射基频光的光强、带宽以及晶体厚度对三倍频转换效率的影响。对采用一块Ⅰ类二倍频晶体、一块Ⅱ类和一块Ⅰ类双混频晶体的级联宽带三倍频方式进行了晶体参数的优化。研究结果表明,使用两块级联的KDP晶体作为混频晶体,不仅能有效地提高带宽较宽条件下三倍频光的转换效率,还可以显著增大宽带三倍频的动态范围。经优化后,带宽1.11nm时入射基频光强在3~8GW/cm2范围内的三倍频转换效率可保持在60%~70%,比采用单倍频单混频方案时增大了30%~40%。

The dual-tripler scheme for third harmonic generation(THG) is studied by the coupled equations under the small signal and high power condition((1.5 GW/cm~2).) The design has been proved in the experiment.It found that this design can increase the third harmonic conversion efficiency of broad bandwidth,but the distance between two triplers has an important impact on the third harmonic conversion efficiency in the experiment.(19.75%) THG efficiency with chirp pulse of(3.5 nm) bandwidth at average...

The dual-tripler scheme for third harmonic generation(THG) is studied by the coupled equations under the small signal and high power condition((1.5 GW/cm~2).) The design has been proved in the experiment.It found that this design can increase the third harmonic conversion efficiency of broad bandwidth,but the distance between two triplers has an important impact on the third harmonic conversion efficiency in the experiment.(19.75%) THG efficiency with chirp pulse of(3.5 nm) bandwidth at average power of (1.5 GW/cm~2) was achieved at(25 mm) optimum distance between two triples in the experiment.It will be useful to solving the problem of the large bandwidth of the THG in the high power laser system.

从耦合波方程出发,分别在小信号、高功率密度(1.5 GW/cm2)条件下研究了晶体串接三次谐波(THG)转换方案,并利用实验验证了该方案。实验观察到这种方案可以有效提高宽带激光三次谐波转换效率,但混频晶体之间的距离对宽带三次谐波转换效率影响明显。在1.5 GW/cm2平均功率密度下,实验中最佳距离25 mm处,对带宽3.5 nm的啁啾脉冲取得了19.75%的三倍频效率,这对于高功率激光宽带三次谐波转换的解决很有意义。

Third harmonic generation(THG)of super intense femtosecond laser pulse with one BBO crystal was analyzed.Effects of the third-order and the cascaded second-order nonlinearity in one crystal on the third harmonic conversion efficiency were compared.Influences of the factors,such as input fundamental intensity,length of the crystal,self-phase-modulation (SPM) and cross-phase-modulation(XPM),group-velocity mismatching,detuned angle,azimuth angle,etc,on the conversion efficiency,pulse shape and...

Third harmonic generation(THG)of super intense femtosecond laser pulse with one BBO crystal was analyzed.Effects of the third-order and the cascaded second-order nonlinearity in one crystal on the third harmonic conversion efficiency were compared.Influences of the factors,such as input fundamental intensity,length of the crystal,self-phase-modulation (SPM) and cross-phase-modulation(XPM),group-velocity mismatching,detuned angle,azimuth angle,etc,on the conversion efficiency,pulse shape and spectra of the third harmonic field were discussed in detail.Furthermore,the methods to improve the third harmonic conversion efficiency were proposed.The results show that,the variation of the maximum intensity and the pulse width(full width at half maximum(FWHM)) of the third harmonic field with the length of the crystal is not obvious.By justifying the phase-mismatching angle of the fundamental field,the conversion efficiency and the maximum intensity of the third harmonic field can be increased,and the pulse width(FWHM) can be reduced.Moreover,it is also helpful to improvement of the conversion efficiency by optimizing the azimuth angle of the crystal.

针对超高强度飞秒激光,对利用单块BBO晶体产生三倍频(THG)的过程进行了分析,比较了单块晶体中三阶非线性效应以及级联二阶非线性效应对三倍频转换效率的作用,讨论了入射基频光光强、晶体厚度、自相位调制(SPM)、交叉相位调制(XPM)、群速度失配、失谐角、方位角等因素对三倍频光转换效率、时间波形及光谱分布的影响,在此基础上,提出了提高三倍频转换效率的方法.研究结果表明:入射基频光强一定时,三倍频光的峰值光强、脉冲宽度(FWHM)随晶体厚度变化不明显.通过优化基频光入射角度,可提高单块BBO晶体三倍频光转换效率及峰值光强,并减小三倍频光脉冲宽度.此外,方位角的优化也可在一定程度上提高三倍频转换效率.

 
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