今晚天王星距离地球超过2.5光小时远。相对的，月球——我们最近的邻近天体——距离地球只有1.3光秒远。
Uranus looms well over 2.5 light-hours away from Earth tonight. In contrast, the moon - our nearest celestial neighbor - resides only 1.3 light-seconds away.
随着中微子束的收紧，中微子仍然比光提早了60纳秒抵达了格兰·萨索。
With the beam tightened up, the neutrinos still arrived at Gran Sasso 60 nanoseconds faster than light would have.
一秒钟内可拍摄610万张照片，快门速度为440万亿分之一秒，在这么短的时间内光也只前进了不到一厘米。
It can take 6.1 million pictures in a single second, at a shutter speed of 440 trillionths of a second. Light itself moves just a fraction of a centimeter in that time.
这个装置的原型使用了一个10英寸的屏幕，这个屏幕是用一种新型“光致折变”（photorefractive）材料制成的，这种材料使得全息图能够每两秒刷新一次。
The prototype uses a 10 inch screen made from a new type of 'photorefractive' material that can refresh a hologram every two seconds.
通过考虑脉冲频谱的增益色散，提出了一个分析亚皮秒光脉冲在半导体光放大器(SOA)中传输的新思路。
We proposed a novel method to analyze the propagation of sub-picosecond optical pulses through semiconductor optical amplifiers (SOA), fully considering spectral dispersion of ultrashort pulses.
通过脉宽为周期量级的超快强场激光脉冲与惰性气体原子的极端非线性相互作用，能够产生单个的阿秒量级的极端远紫外光脉冲。
Single isolated attosecond (as) extreme ultraviolet (XUV) pulses can be generated via the nonlinear optical interaction between intense few-cycle laser fields and noble gas atoms.
不幸的是，许多内置测光器最多在30秒左右就变得不太精确了。
Unfortunately, most in-camera light meters become inaccurate or Max out at about 30 seconds.
计算分析表明，该光路可在一帧数字全息图上连续记录间隔为纳秒量级的多幅超快过程的动态图像。
Computation result shows that a series of dynamic multi-images in nanosecond time scale of ultra-fast process can be automatically recorded on a piece of digital hologram.
作为一类特殊的透明介质，非线性光学晶体因其具有不同于各向同性介质的结构，因而在与飞秒光脉冲相互作用时，可能会产生很多新的物理现象。
As a special kind of transparent material, nonlinear optical crystal may induce some more phenomena when femtosecond laser pulse propagate in it because of its peculiar structure.
在现代生物学领域，不同类型的飞秒光镊已成为了强有力的工具。
Different types of femtosecond optical tweezers have become a powerful tool in the modern biological field.
利用矩法分析了飞秒光脉冲的传输特性。
The transmission properties of femtosecond optical pulse are analyzed with the momentum method.
利用条纹照相机直接观察和记录了由全息相位共轭技术产生的相位共轭的皮秒光脉冲。
The phase conjugation of picosecond optical pulses is observed and recorded directly by using a streak camera. The signals are achieved by holographic phase conjugate technique.
本文研究了质子转移型有机分子7 -羟基喹啉在皮秒激光脉冲作用下的光开关现象。
Optical switch phenomenon of 7-hydroxyquinoline with excited state proton transfer effect was investigated using picosecond laser pulses.
给出了描述具有几个光振荡周期的飞秒激光脉冲在非线性光纤中传输方程的解。
The solution of the nonlinear wave equation describing propagation of a femtosecond laser pulse with duration of several optical oscillation periods in a nonlinear fiber is presented.
本文根据我们新建的激光器模型，导出了非线性成形飞秒光脉冲的量子理论锁模方程。
In this paper, a quantum mode-locked equation has been established on the basis of a new laser model, that describes nonlinear shaping for femtosecond light pulse.
对方程作了数值解，模拟了具有几个光振荡周期的飞秒脉冲在单模光纤中的非线性传输。
By solving the equation numerically, the nonlinear propagation of femtosecond laser pulse with duration of several optical oscillation periods in single-model optical fiber has been simulated.
在加工三维木堆结构光子晶体方面，飞秒激光双光子光聚合是具有广泛应用前景的方法。
Two-photon photopolymerization (TPP) with femtosecond laser is a promising method to fabricate three-dimensional (3D) photonic crystals (PCs).
介绍了2005年诺贝尔物理学奖的获奖工作-用锁模飞秒激光光梳去测量光的频率。
The work of the winners of the 2005 Nobel prize in physics is briefly reviewed. They measured the frequency of light with mode-locked laser comb.
对色散渐减变光纤构成的非线性环形镜中飞秒光脉冲传输特性进行了深入的研究。
The propagating characteristics of femtosecond pulse in this type of NOLM are also investigated.
本文首次报道一种专门用于记录飞秒激光引发空气电离动态过程的脉冲数字显微全息光路。
We report, for the first time, a specially designed set-up of pulsed digital holography for micro - recording of air-ionization process induced by femto-laser.
通常，你可以用大点的光圈测光(这样，测量的曝光时间就在30秒以内)，随后缩小光圈，相应地增加曝光时间。
Usually one can first meter using a larger aperture (so that the metered exposure time is under 30 seconds), then stop down as necessary and multiply the exposure time accordingly.
这种X光脉冲快门速度不到100飞秒（100飞秒= 万亿分之一秒的1/10）。
The X-ray pulses have a shutter speed of less than 100 femtoseconds (100 femtoseconds = 1/10 of a trillionth of a second).
飞秒激光光梳技术大大简化了光频的测量。
Femtosecond laser-frequency comb techniques are vastly simplifying the measurement.
结果表明，利用该方法不仅能够完全补偿飞秒BBO光参量放大在连续调谐时三波的群速失配，而且能够实现最大的参量带宽。
The results indicate that this method not only can match completely group velocities among three waves, but also can achieve maximal parametric bandwidth for continuous tunable femtosecond BBO OPA.
通过输入飞秒量级的控制光，该双向全光开关的速度可以达到飞秒量级。
The speed of this bidirectional optical switch can reach to femtosecond if a femtosecond laser is used as the control light.
由于索引器本身只是推消息处理过程中的一个环节，所以光索引器本身的延时必须保证在亚秒级别。
Since the indexer is only one part of the pipeline a Tweet has to make it through, we needed the indexer itself to have a sub-second latency.
本文介绍了0.2秒测微自准平行光管及两种主要附件的原理、结构及装调方法。
The principle, structure and assembling method of 0 ". 2 micrometric autocollimator and its two main accessories are introduced in the paper."
研究了级联三能级系统中孪生色锁随机光场的相位共轭阿秒和频极化拍频(ASPB)不对称新效应。
The new effects of phase-conjugation asymmetric attosecond sum-frequency polarization beat (ASPB) of twin composite color-locking stochastic fields in cascade three-level system are investigated.
研究了级联三能级系统中孪生色锁随机光场的相位共轭阿秒和频极化拍频(ASPB)不对称新效应。
The new effects of phase-conjugation asymmetric attosecond sum-frequency polarization beat (ASPB) of twin composite color-locking stochastic fields in cascade three-level system are investigated.
应用推荐