The obvious question becomes: is this diffraction limited or not?
现在问题变成：这个是不是衍射极限的作用？
This in turn leads up to asking the question of exactly how large is the diffraction limited field of view.
反过来，又引出一个新的问题，衍射极限的视角到底有多大？
When the system close -loop controlling is realized for lower frequency perturbation, the approximate diffraction limited line spread function can again be achieved on the image plane.
对于低频扰动，当系统实现闭环控制后，像面上线扩散函数已接近衍射极限。
A near diffraction limited beam was produced from the amplifier with quasi-single mode output... the results shows that the high pulse energy fiber laser has advantage of simple all fiber structure.
输出的光束质量较好，为准单模输出。该光纤放大器输出脉冲能量高，具有全光纤化、结构简单的特点。
The results of the experiment indicated that the set up time of the diffraction limited mode in the resonator is influenced by magnification, cavity length and the gain saturation effect of the laser.
表明了具有衍射极限的模式建立时间受放大率、腔长以及饱和效应的影响。
DIFFRACTION LIMITED (RAYLEIGH CRITERION).
衍射极限(瑞利判据)。
Laser transmitting wavefront is near diffraction-limited in space laser communication. Wavefront measurement is the basis of system adjustment and testing.
空间激光通信中发射波面质量接近衍射极限，测量波面是调整和检验发射系统的依据。
The image quality evaluation for diffraction-limited optical synthetic aperture imaging system is analyzed with two-point resolution and optical transmission function (OTF).
本文就照相物镜的像质评价的几种方法，做了比较；设计了测量照相物镜光学传递函数的光路系统并进行实际测量。
It is shown that near diffraction-limited beam qualities could be achieved with optimized off-axis hard-edge unstable resonators.
结果表明：利用优化的离轴硬边非稳腔可以得到近衍射极限的输出。
It is shown that near diffraction-limited beam qualities could be achieved with optimized off-axis hard-edge unstable resonators.
结果表明：利用优化的离轴硬边非稳腔可以得到近衍射极限的输出。
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