提出补偿热透镜效应的有效措施。
热透镜效应是影响激光焊接质量的重要因素之一。
Thermal focusing is an important factor to influence the quality of laser welding.
本文介绍了液相液晶中强激光场引起的负透镜效应。
A negative lens effect induced by strong laser field in liquid phase of. Liquid crystals is described.
提出一种动态补偿热透镜效应的方法，分析了其可行性。
Also a method to dynamically compensating the thermal lensing is discussed.
研究了强激光作用下非热平衡状态光学元件的热透镜效应。
This paper studies the thermal lensing effect of optical element under laser heating at non-thermal equilibrium state.
对激光晶体的热透镜效应进行了分析并得到了热透镜焦距公式。
Then, thermal lens formula has been gotten by analyzing the thermal lens effect of laser rod.
天文学家通过一种叫做引力透镜效应的物理现象来测算星系中暗物质的质量。
Astronomers measure how much dark matter lies in galaxies by a fluke of physics called gravitational lensing.
对于输出窗准确的温度场和热形变场研究是解决热透镜效应的关键。
So accurate temperature field and thermal distortion field analysis is the key to resolve these problems.
研究了自由涡射流对透射激光产生的气动透镜效应，给出了计算结果。
The aerodynamic lens effect of laser beam through aerodynamic window is investigated and the conclusion is provided.
引力透镜效应(注2)的产生是因为引力会改变光路，正如爱因斯坦提出的那样。
Gravitational lensing occurs because gravity, as Einstein showed, bends light.
最后，分析讨论类透镜效应对自由旋气动窗口的设计所带来的限制条件。
At last the limit conditions of the FADW design originated from lens-like effect are discussed and analyzed.
他们通过各种技术绘制了大量“暗物质地图”，包括星系簇的引力透镜效应。
They've created numerous "dark matter maps" using different techniques, including gravitational lensing of galaxy clusters.
最后，简单地讨论了离子气体激光器和某些其它激光器中的可能热透镜效应。
Finally, possible thermal lensing effects in ion gas lasers and other lasers are briefly discussed.
重点讨论了以“热透镜效应”和“蜃景效应”为基础的一类激光光热光谱法。
A laser photothermal spectrometry based on the "thermal lens effect" and the "mirage effect" is discussed with emphasis.
所以研究人员使用统计分析来观测星系的位置和形状，从而找出由弱透镜效应造成的微小偏移。
So researchers used a statistical analysis to measure the orientation and shape of the galaxies to find small distortions due to so-called weak lensing.
分析了高功率激光通过窗口时，引起的窗口热透镜效应及其对激光光束质量的影响。
This paper concerns the thermal lensing effect that occurs as laser going through an optical window, and its influence on beam quality.
实验采用凸平直线非稳腔，将凸面镜和增益介质热透镜效应等效为望远镜系统进行分析。
In the experiment we used convex-plane unstable resonator, and analysis the convex mirrors and gain medium thermal lens as a telescope system.
这一项目的主要目标是，捕获重力微引力透镜效应，看不见的星体在背景星和地球之间穿过。
A major goal of the project is to capture gravitational microlensing events where an unseen body passes between a background star and Earth.
结果表明：精细的火焰多层膜层结构的透镜效应研究对获得极准确的激光全息信息非常有益。
The results show that the study on lens effect in fine flame stratified film structure is benefit for obtaining very accurate laser hologram information.
本文从理论上分析了因孔洞而产生的正透镜或负透镜效应并给出了归一化透过率的表达式。
We analyze the positive and negative lens effect caused by the hole theoretically and give the expression of normalized transmittance in this condition.
特别由于脉冲附带长的拖尾加剧了热透镜效应，使得脉冲重复频率的增加引起转换效率的降低。
Specially, the thermal lens effect is intensified due to the long tail attached to pulse, which leads to decreasing of conversion efficiency if pulse repetition rate is enhanced.
结果表明，热透镜效应对输出功率和频率特性影响相当大，对基模输出激光器的影响最为突出。
It is shown that the thermal lensing effects have considerable influence on the output and resonance frequencies, particularly for the fundamental mode lasers.
提高端面抽运功率占有率，可在一定程度上减小热透镜效应对振荡光束尺寸和衍射损耗的影响。
The influences of the thermal lens effect on the oscillation beam radius and diffraction loss can be reduced by increasing the proportion of the end-pumping power.
与原来的透镜效应法相比，此法对轴更简单，而且具有更高的测量精度，更适合于自动对轴系统。
By comparison with the POL, this method is easier to be realized and has higher measurement accuracy, so it is suitable for auto-alignment system.
本文用光束偏转法和干涉法分别测量了以熔石英为窗口材料的铜蒸气激光器及其窗口的热透镜效应。
The thermal lenses in operating copper vapor lasers and in the fused silica Windows were measured by using of the deflection method and the interferometer method respectively.
结果是这些背景星系的多重影像被扭曲成长而暗的弧——透镜效应的例子，类似于透过酒瓶底的玻璃看远处的街灯。
As a result, multiple images of these background galaxies are distorted into long faint arcs — a simple lensing effect analogous to viewing distant street lamps through a glass of wine.
激光波长处于大气传输窗口，对大气变化不敏感；工作物质快速流动，不存在热透镜效应和破坏阈值；
The laser work media flows fast, and it has no the thermal lens effect and damage threshold.
对激光晶体产生的温度场和端面热形变场的研究为解决晶体热透镜效应、提高激光器的性能起指导作用。
The study for temperature fields and pump-face thermal distortions will offer a theoretical direction for solving thermal lens effect of laser crystal to improve laser performance.
然而，克劳斯说：“爱因斯坦只考虑到了恒星的透镜效应，没有想到星系。他的确不那么精通天文学。”
But Dr. Krauss said: "He only thought of lensing by stars and didn't think of galaxies. He really wasn't much of an astronomer. ""
例如，当恒星发出的光经过一个星系附近，其路径会弯曲，改变恒星出现在天空中的位置——这就是所谓的引力透镜效应。
When light from a star passes near a galaxy, for example, its path bends, changing where the star appears in the sky-the so-called gravitational lensing effect.
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