1) third harmonics generation
三次谐波转换
1.
The type Ⅰ/Ⅱ angle-detuning scheme for third harmonics generation has been taken as an example,and then the influence of low-frequency phase perturbation on the focal characterization of the tripling field has been discussed in details.
本文采用均方根梯度描述低频位相噪声,建立了合理的低频位相畸变模型,以Ⅰ/Ⅱ类角度失谐KDP晶体的高强度三次谐波转换为例,详细的研究了低频位相畸变对三倍频光聚焦特性的影响。
2.
Using type I/II angle-detuning schemes for third harmonics generation,the effect of third-order nonlinear interaction of KDP crystal on the tripling efficiency and beam quality under high power condition has been studied.
研究在高功率条件下I/II类角度失谐倍频方案中 ,KDP晶体的三阶非线性效应对三次谐波转换效率和光束质量的影响。
3.
The influence of third harmonics generation on the focal spot of the tripling field has been discussed.
以Ⅰ/Ⅱ类角度失谐KDP晶体的高强度三次谐波转换为例,详细研究了三次谐波转换过程中,基频光和三倍频光的波前相位畸变之间的定量变化关系。
2) third-harmonic generation
三次谐波转换
1.
Inverse problem of monochromatic third-harmonic generation;
窄带三次谐波转换的逆问题
2.
Based on the nonlinear coupling equations,the relation between group-velocities of 1ω,2ω and 3ω waves in the mixing process of broadband third-harmonic generation(THG)is investigated theoretically.
导出的三波群速匹配关系式对寻找合适的色散晶体和选择有效的匹配措施、实现宽带三次谐波转换具有指导意义。
3) third harmonic conversion
三次谐波转换
1.
A theoretical analysis is presented for third harmonic conversion in KDP (KH_2PO_4) for type Ⅰ/ type Ⅱ angle-detuning scheme of high-intensity laser.
采用了包括三阶非线性、离散及衍射等效应的谐波转换计算模型,详细讨论了在三阶非线性、离散和衍射等效应的情况下,相位扰动与三次谐波转换(THG)效率的关系,绘出了相应的关系曲线。
2.
Using type Ⅰ/type Ⅱ angle-detuning scheme for third harmonic generation,the effect of phase ripple on the characteristic of third harmonic conversion is considered and calculated when the input fundamental field is super-Gaussian beam.
采用Ⅰ /Ⅱ角度失谐的三倍频方案 ,以超高斯光束作为入射基频光场 ,建立了位相扰动光束三次谐波转换的理论模型 ,并作数值模拟计算。
4) Broadband Third-Harmonic Generation
宽带三次谐波转换
5) second harmonic generation
二次谐波转换
1.
WT5”BZ]Taking the second harmonic generation of Gaussian beam in a KDP crystal of type Ⅰ matching for example, the effects of diffraction and walkoff on doubling conversion efficiency have been worked out.
以 类匹配 KDP晶体中高斯光束的二倍频为例 ,对衍射和离散两种因素对二次谐波转换效率的影响进行了数值模拟计算。
2.
Influence of temperature rise distribution in second harmonic generation crystal on intensity distributions of output second harmonic wave
利用分步快速傅里叶变换和四阶龙格-库塔法,对具有一定温升分布的倍频晶体的二次谐波转换过程进行了研究。
6) third-harmonic conversion
3次谐波转换
1.
In order to achieve stable and high conversion efficiency,the influence of fundamental pulse shape on third-harmonic generation was analyzed and different physical insights of third-harmonic conversion with flat-top pulse and Gaussian pulse were studied respectively.
为了使谐波转换系统保持高效稳定的3次谐波转换,采用数值模拟的方法,研究了基频光脉冲波形对3倍频转换效率的影响,并对高斯脉冲和平顶脉冲的不同谐波转换特点作了详细分析。
补充资料：三次谐波失真
分子式：
CAS号：
性质：在模拟音频信号传输系统中，由于存在着非线线特性，当在磁带上输入一个正弦波信号时，在输出中除原有的、称做基波的信号外，还会产生与基波成整倍数的谐波成分。如果以基波为(f)，新增加的与基波成整倍数的谐波成分便有二次谐波（2f）、三次谐波，(3f)……直至n次谐波（nf），这些谐波信号都叫谐波失真。其中三次谐波失真不仅电平高，而且对音质影响也大，所以在一次情况下都使用三次谐波失真。三次谐波的有效值与基波有效值之比，称为磁带的三次谐波失真，用百分数（%）或dB表示。
CAS号：
性质：在模拟音频信号传输系统中，由于存在着非线线特性，当在磁带上输入一个正弦波信号时，在输出中除原有的、称做基波的信号外，还会产生与基波成整倍数的谐波成分。如果以基波为(f)，新增加的与基波成整倍数的谐波成分便有二次谐波（2f）、三次谐波，(3f)……直至n次谐波（nf），这些谐波信号都叫谐波失真。其中三次谐波失真不仅电平高，而且对音质影响也大，所以在一次情况下都使用三次谐波失真。三次谐波的有效值与基波有效值之比，称为磁带的三次谐波失真，用百分数（%）或dB表示。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条