自聚焦

For the accelerating targets, an autofocus algorithm based on fractional Fourier transform is proposed.

针对加速转动的目标，提出了一种基于分数阶傅里叶变换(FRFT：fractional Fourier transform)的自聚焦算法。

These effects are explained by the surface plasmon polariton Bloch modes and self-focusing theory.

这些效应可以用表面等离子体激发和自聚焦理论来解释。

By using tabletop femtosecond laser, the pulse which is spatially modulated by the crossed-fiber diffraction passes through the carbon bisulfide. With different input power, the small-scale self-focusing of the pulse was obtained.

具体实验过程是使经过正交细丝的衍射来实现激光的空间调制，然后通过非线性Kerr介质二硫化碳，随着输入功率的增大，超短脉冲开始出现小尺度自聚焦增长现象。

Compared with selffocusing cylindrical lens, selffocusing cone lens has its unique features.

自聚焦锥透镜与圆柱透镜相比较，有其特殊之处。

The relative space relationship of the datum line and mask is represented by the beam from GRIN lens .

利用自聚焦准直镜的出射光束反映基准线与模板的相对空间关系。

Consequently,the self-focusing properties of the pulse with large chirp in the nonlinear medium with normal dispersion were different from those of femtosecond pulse,but similar to those of nanosecond pulse.

因此，具有大啁啾的脉冲在非线性正色散介质中的自聚焦特性不同于飞秒脉冲，而与纳秒脉冲相似。

And then, a window-type novel x-ray crystal spectrometer was put forward based on the elliptically curved crystal analyzer. It was coupled to an x-ray CCD camera, and a set of system had been designed and constructed. The spectrograph is useful in the experiments of x-ray diagnostics, for example in x-ray lasers, inertial confinement fusion, laser-matter interaction, and so on.

本论文从X射线晶体衍射和椭圆自聚焦几何光学原理出发，剖析追究了椭圆型弯曲X射线晶体谱仪在实际应用中产生问题的根源，率先从技术上提出解决目前椭圆型弯曲X射线晶体谱仪存在问题的思路，论证了其相应实施方案的可行性。

The result implies the intermittence, rather than the stable structure, of the filamentation caused by self focusing.

结果表明由自聚焦导致的成丝现象具有间断性，而不是一种稳态的模式。

Influence of the Kerr effect on the focusing property of the Gaussian beam［J］.

环形斑光束在非线性克尔介质中的自聚焦效应［J］。

The general analytical expression of the deformed high-order Bessel beam and its propagation properties of in self-focusing lens self-imaging process in free space wer.

从产生高阶贝塞尔光束的典型光路着手，通过将高阶贝塞尔光束分解为高阶贝塞尔余弦光束和高阶贝塞尔正弦光束，利用柱坐标下的Collins公式，分析了变形高阶贝塞尔光束的解析表达式和在自聚焦透镜中的传播。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。