数值结果表明,适当选择光纤光栅及入射脉冲的参数,脉冲能够得到有效压缩。
The numerical results show that picosecond pulses can be compressed effectively, if the parameters of gratings and pulses were chosen properly.
在色散补偿量相同的情况下,压缩效果随入射脉冲能量变化的规律符合理论估计。
When the dispersion compensation is the same, the relationship between the compression result and the input laser energy agrees with the theoretical analysis.
分析表明,交叉弛豫随激发场强度增大,并导致偏振因子随激发场入射脉冲面积减小。
It was revealed that the cross relaxation increased with intensity of the excitation, which resulted in the decrease of polarization factor with the input pulse area.
在进行冲击压缩实验时采用波形整形器调整入射脉冲,从而使得试件内的应力梯度不致过大,取得了较好的效果。
When impact compression test is exerted, the pulse shaper has been used to regulate the incidence wave, so that the stress gradient will not be significantly high and the results is acceptable.
利用耦合非线性薛定谔方程推导出带初始啁啾入射脉冲经偏振模耦合产生的啁啾表达式,分析了各因素对啁啾的影响。
The function of chirp is induced through coupled nonlinear Schrodinger equation. Every factor's effect on the chirp is discussed.
像陡峭山坡上的雪崩一样,一束入射光的脉冲最初仅仅释放少数的电荷载子(charge carrier),这些电荷载子再轮流释放其他的载子,直到原始信号被放大很多次。
Analogous to a snow avalanche on a steep mountain slope, an incoming light pulse initially frees just a few charge carriers which in turn free others until the original signal is amplified many times.
研究结果表明:三阶色散所致啁啾是非线性的,存在极值,极值点在脉冲中心附近,并且与入射高斯脉冲的初始啁啾有关。
The results show that chirp is nonlinear and has extreme value near the center of the pulse and depends on the initial chirp.
本文进一步完善了光栅在近掠入射条件下应用于脉冲染料激光器的工作。
The grating at near grazing incidence used for pulsed dye lasers has been further improved.
本文主要研究了存在非线性效应光纤信道中高斯型光脉冲入射下的系统传输特性。
The system transmission characteristics of the nonlinear optical fibre channel with the incidence of the Gaussian light pulse is studied in this paper.
利用瞬态波的脉冲入射信号以及脉冲响应对损伤混凝土介质的材料常数(损伤度)进行反演,研究反演理论和反演计算方法。
The inverse theories and calculated methods of the material constant (damage degree) of damaged concrete media are studied using both of incident impulse signal and received impulse response.
入射激光脉冲的宽度决定了系统空间分辨率的上限。
The upper limit of the spatial resolution of the system is determined by the width of the input laser pulse.
分析了探头调整时脉冲回波信号的变化特点,在实验的基础上构建了声束入射角与表面波时域特征值间的关系模型。
Using the characteristics of pulse echo singal during the probe adjustment, a relation model between angle of incidence and time-domain eigenvalue of reflect wave signals was proposed.
实验研究了超短超强激光脉冲与薄膜靶相互作用中产生的超热电子角分布随激光入射角的变化。
The effect of laser incidence angle on the angular distribution of hot electrons generated in the interaction of an ultrashort intense laser pulse with the foil target are investigated.
模拟计算了超短脉冲波场入射下其衍射层析的角分布与面分布。
The Angle distribution and plane distribution of the diffraction tomography with ultrashort pulse incident wave was simulated.
高斯脉冲干扰时,微带线感应电压、电流的时域和频域特性随入射角度而变化。
When the incident wave is Gauss pulse, the response characteristics at ports both time and frequency domain varies with incident angles.
本文主要对非平行光场入射时声光衍射效率的情况以及声光开关的衍射效率变化速率对输出脉冲时间特性的影响两个方面进行了研究。
This paper is mainly on the diffraction efficiency when incident light is non-paralleled and the effect of the diffraction efficiency variation rate on temporal characteristics of the output pulse.
分析了其他细线天线的存在对馈源为电磁脉冲的细线天线辐射特性的影响以及入射波为电磁脉冲时细线天线中心的电流响应特性的影响。
The effects of other antennas on the radiation characteristics of thin wire antenna are analyzed when the antenna is fed by an electromagnetic pulse.
数值模拟了瞬间激光脉冲入射下:(1)半透明介质与不透明介质在非人射面上的过余温度响应;
When a short-time laser pulse irradiate the surface of a medium, the following contents are simulated : (1) excess temperature response at non-incident side of semitransparent or opaque medium;
摄像机可以同时记录的光的基准脉冲,允许相机时基相对于入射的激光校准。
The camera simultaneously records an optical fiducial pulse which allows the camera time base to be calibrated relative to the incident laser.
探测器输出的电脉冲信号幅度与入射粒子或射线的能量成正比,通过测量脉冲信号的幅度,得到入射粒子或射线的能量。
Detector output electrical pulse signal amplitude is proportional to the energy of incident particle or ray, by measuring the pulse amplitude, get the energy of incident particles or rays.
但在大角度入射时,短脉冲打靶时等离子体的吸收率反而比长脉冲打靶时高。
But for bigger incident angles, the absorption of a short laser pulse is higher than that of the long pulse.
此外,当激光入射角度发生变化,超声脉冲的幅值也随之发生变化,其幅值在激光束垂直入射的时候最大。
In addition, the amplitude of ultrasound waves vary with the laser incident Angle, and it is the maximum when the incident direction of pulsed laser is perpendicular to the liquid.
入射波上升时间增长,反射脉冲变宽,幅值降低,但一定程度上有利于检测出绝缘故障。
The width of the reflection pulse is increased and its amplitude reduced as the rise time of incident wave delays, which may to some extent be good for the detection of insulation faults.
分析了泵浦脉冲的脉宽、泵浦波长、入射峰值功率对红移辐射的影响。
The impact of pulse width, center wavelength and input peak power of the pump pulse on the red-shifted radiation is simulated and analyzed.
第三章:研究了色散平坦渐减光纤中,入射光脉冲的初始啁啾对超连续谱产生的影响情况。
Chapter 3: Focuses on the effect of frequency chirping on Supercontinuum generation in dispersion flattened and dispersion decreasing fibers.
第三章:研究了色散平坦渐减光纤中,入射光脉冲的初始啁啾对超连续谱产生的影响情况。
Chapter 3: Focuses on the effect of frequency chirping on Supercontinuum generation in dispersion flattened and dispersion decreasing fibers.
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