焦斑

远场焦斑经成像透镜放大成像后，由12bit，1024×1024面阵科学级CCD相机采集。

The far field focal spot was enlarged by an imaging lens and collected by a scientific-grade CCD camera with 12 bit .

位相补偿方法的模拟结果显示，倾斜放置后的光束整形效果与原先的设计结果保持一致，即在倾斜放置DOE的同时保证焦斑质量不变。

The simulation results show that the beam shaping effect of the tilted DOE was consistent with the original design results by using the phase compensation method , the focal spot quality can be retained .

高能工业CT用新型X射线源焦斑测量

Spot size measurement of new type X-ray source designed for high energy industrial CT

He-Ne激光束的焦斑形态控制

Controlling focal profile of He Ne laser beam

GRIN透镜红外波段焦斑直径的测量

Measurement of GRIN lens focal spot diameter in IR wavelength

报道了散射颗粒、焦斑面积和非线性吸收等对KDP晶体激光损伤的影响。

Effects of scattering Particulate and focal area as well as nonlinear absorption on damage thresholds of KDP crystals are reported .

提出对不同焦距写入物镜下的焦斑，利用同一个DOE加以整形的方法。

An efficient way of using a DOE to shape the laser writing spot under the objectives with various focal lengths is presented .

实验表明，气体的压强和气体盒与激光焦斑的相对位置都会对CO2分子的高次谐波产生影响。最后，对全文的研究内容作了总结。

The experiment results show that gas pressures and the position of gas cell have great influences on HHG from CO2 . Finally , the dissertation sums up all of the research work .

以一定的间隔，反复移动该激光束的焦斑可在LiF晶体内空间选择性地诱导产生稳定的色心区。

The resulting stable color centers region was induced inside the LiF crystal along the path traversed with the focal point of the laser .

通过优化系统参数设计、严格控制光楔列阵的加工误差和拼接精度，成功地研制了九单元小焦斑SWA系统。

A nine element small focal spot crossed SWA system was successfully fabricated with optimum design of the system parameter and strict control precision of fabrication .

根据激光发散角经准直后的微小角度的测量理论，提出了采用远场焦斑和CCD进行快速准确的测量方法，最后实际测出了激光准直后的远场发散角。

The key technique in optical communications is the narrow beam orientation . According to the small-angle measurement theory of laser alignment system divergence , an accuracy and high-speed measuring method using Charged Couple Device ( CCD ) is proposed to measure far-filed focus facula .

伴随着通光孔径的增加，球透镜的衍射焦斑强度分布增大，衍射的强度减小；直径为0.8mm的球透镜最大耦合效率为62.5%。

The light intensity distribution of ball lenses diffraction facula is increasing and light intensity is decreasing during increasing the beam aperture and the maximum coupling efficiency is 62.5 % .

其次，本文对反射型变周期光栅透镜（RCGL）的原理和设计给予了详细的讨论，而且对RCGL的衍射效率和焦斑性质在理论上进行了较为彻底的研究。

Secondly , the principle of designing method of the reflect-type chirped grating lens ( RCGL ) has been discussed .

根据实验平台的技术指标，设计高阻抗Rod-pinch二极管及其测量装置，测量二极管的电压、电流、输出剂量及分布、X射线焦斑直径等。

Based on the status of the experimental flat , the high impedance rod-pinch diode has been designed and tested . This paper mainly measured the voltage , current , output dose , source diameter , dose angular distributing of x-ray source .

通过模拟实验已经证实了该探针光的二倍频总能量大于5J，焦斑尺寸小于100μm，可以满足激光与等离子体相互作用的高功率要求。

A total energy of > 5J , a focal spot size of order 100 μ m was demonstrated for target shots . It fulfills high-power requirements for laser-plasma interaction experiments .

结果表明，当激光束焦斑围绕样品表面上下移动时，等离子体激发温度的分布具有不对称性；当焦斑位于样品表面以下0.4mm左右时，等离子体的激发温度接近最大值；

The experimental results show that if the focal point of the Len shifts around the surface of the sample , the excitated temperature of the plasma appears asymmetric , and the maximum occurs at the location which is about 0.4 mm under the surface of sample ;

强激光远场焦斑重构算法研究

Algorithm research on focal spot reconstruction for high power laser output

激光远场焦斑测试技术的实验研究

Experimental investigation in far-field test technique for high power laser output

方形单元衍射光学阵列器件实现近圆形均匀焦斑

Square diffractive optics array element for quasi circular uniform focal spot

激光波前功率谱密度与焦斑旁瓣的关系

Relation between Wavefront Power Spectral Density and Wings of Focal Spot

激光半焦斑边缘检出技术研究

Research of the Technology for Edge Checkout Using Laser Half-focus

用于超宽焦斑光束整形的大口径衍射光学元件设计和制作

Development of large aperture diffractive optical element for super-wide focal-spot beam shaping

用透镜列阵实现大焦斑面的均匀照射

Uniform illumination of large focal targets using a lens array

变长线扫描系统采用的扫描方式和聚焦元件使线束宽度小且恒定，线束功率密度与点扫描焦斑的相当。

Quality advantage of the alterable thread length scanning system is evident .

畸变光束的焦斑质心位置

Centroid position of focal spot of laser beam with aberration

焦斑可调的透镜阵列均匀辐照光学系统

Improved Lens Arrays Optical System with Controllable Focus Width for Uniform Irradiation

非球面液滴微透镜固化控制和焦斑测量研究

Study on Curing Control and Focal Spot Measurement of Aspherical Liquid Microlens

纹影法测量远场焦斑实验研究

Experimental investigation on focal spot measurement by schlieren method

宽焦斑-低压力电磁式冲击波碎石术治疗上尿路结石

Electromagnetic type ESWL of Wide-focus and Low-pressure for the treatment of urinary calculi

高斯光束变换成方形均匀焦斑的衍射光学元件的研究

Investigation on Diffractive Optical Elements for Converting Gaussian Beam into Square Uniform Focused Spot