The optical frequency shift technology based on photonic crystals is studied.
分析了光子晶体实现光学频率变化的方法。
Calcium is one prospective element for the modern optical frequency standard.
钙原子是现代光学频率标准的一种很有前景的原子体系。
A real optical frequency comb spans the entire visible spectrum of light, and has very fine, evenly spaced teeth.
实际光学频率梳横跨整个可见光谱，各齿极细并均匀分布。
In addition, NIST has shown that extremely stable microwave signals can be generated from optical frequency combs.
另外，NIST还发现可以从光学频率梳产生非常稳定的微波信号。
The method of measuring absolute distance with the optical frequency comb of a femtosecond laser was proposed.
提出使用飞秒激光器的光学频率梳测量绝对距离的方法。
The history, present situation and future of optical frequency standards and optical frequency measurements were presented.
本文综合评述了光频标和光频测量研究的历史、现状和未来。
They measured the radio frequency instead of optical frequency measurement with optical frequency comb and technology of octave-spanning.
利用光频梳和倍频技术，把对光频的测量变为对射频的测量，这样就能够很容易地测出光的频率。
Similarly, can escape radar monitoring of stealth aircraft, it is visible with the naked eye, that is not under the optical frequency stealth.
同样道理，能逃过雷达监测的隐形飞机，用肉眼却是可见的，即在光频下没有隐形。
The harmonic amplitude equation and the generation efficiency of nonlinear optical frequency conversion(NOFC)in quasi-phase-matching (QPM) were discussed.
讨论了准相位匹配（QPM）技术中的非线性光频转换谐波振幅方程和谐波转换效率。
An optical fiber is actually a tiny wave guide which supports optical frequency waves using the principles of total internal reflection at the boundaries of the fiber.
光纤维实际上就是一根纤细的波导管它应用全内反射原理在自身范围内承载光波。
Supercontinuum generation in PCFs has subsequently been widely applied in interdisciplinary fields such as optical coherence tomography and optical frequency metrology.
例如，光子晶体光纤中超连续光谱产生在光相干层析技术、高精密光学测量等领域有很重要应用价值。
The optical temporal and the optical frequency holograph are introduced in this paper, emphasis on the principle of the optical frequency holograph, and its application.
介绍了光学频域全息和时域全息的形成原理，并对光学频域全息在光纤通信及图像传输中的应用作了简要介绍。
A new device which can change the optical frequency shift is described. It consists of a rotating grating, a synchro motor and a power supply whose frequency can be adjusted.
本文描述一台能改变光频移频率的新装置，它由旋转光栅、同步电机和调频电源组成。
Adopting mutually orthogonal magnetic fields, the power tuning curve is utilized for stabilizing optical frequency, the frequency difference drift of double frequency is lower greatly.
采用正交磁场由功率调谐曲线实现稳频，可使双频频差的漂移量大大降低。
We present an accurate route, which is suitable for the design of nonlinear optical frequency translator of biaxial crystals, to calculate the effective second-order nonlinear coefficients.
本文介绍计算双轴晶体二阶有效非线性系数的严格理论，适用于双轴晶体非线性光学频率变换器件的设计。
In nonlinear optical frequency conversion process, it is desirable to maximize the product of the intensity of pump laser and the interaction length in order to achieve maximum conversion efficiency.
在光的非线性传播过程中，增加泵浦光的强度及光和物质的互作用长度是获得较高的频率转换效率的主要途径。
In astronomy, in optical astronomy, we cannot measure the period or the frequency of optical light.
在天文学中，在光学天文学中，我们不能测量周期或者可见光的频率。
Unlike previous ones, the e-passports contain biometric data embedded in a radio-frequency identification (RFID) chip, along with the usual mugshot and optical bar-code.
跟上一代不同，电子护照除了包含照片及光感条码之外，还记有生物体征数据，植在无线电频率识别(RFID)芯片上。
They suggest that any alien civilisation worth its salt would alight not on the photons of the electromagnetic spectrum-whether optical or radio-frequency-to send messages to other solar systems.
他们指出，任何有头脑的外星文明都不会发射电磁波谱中的光子——无论是可见光波段还是射频波段——向另一个太阳系传送信息。
An optical "frequency comb" is a very precise tool for measuring different colors-or frequencies-of light.
光学“频率梳”是一种精确测量光的颜色或频率的工具。
The microwave transistor laser model is very accurate for predicting frequency-dependent electrical and optical properties.
微波晶体管激光模型可以非常准确的预测频变电和光的属性。
The Phalanx operator used the Block 1b's surface mode to perform electro-optical tracking and the system's radio frequency sensors to provide range data to the LaWS.
Phalanx操作人员使用Block1b的表面模式进行光电跟踪，系统的射频传感器为LaWS提供范围数据。
The small signal analysis of laser diode type all optical wavelength converter is presented using carrier depletion, and the frequency response function is given.
理论上基于载流子消耗机制，对激光器型波长转换器进行了小信号分析，给出了频率响应函数。
The study shows that both kinds of solitons are all unstable, and we find the stability of polychromatic partially coherent optical spatial solitons is affected by light frequency.
研究表明不论是准单色还是多色的部分相干空间光孤子在传输过程中都不是严格稳定的，并且多色光孤子的稳定性受到频率的影响。
In astronomy, in optical astronomy we cannot measure the period or the frequency of optical light.
在天文学中，在光学天文学中我们，不能测量周期或者，可见光的频率。
In this paper, the step frequency response equation of optical-region radar target is firstly established by using theories of multiple scattering centers and local resonance.
本文首先根据多散射中心理论与局部谐振原理，建立了雷达目标在光学区阶梯频率波形激励下的响应方程。
This is an optical table with lower vibration frequency and good vibration isolation.
这是一种具有较低振动频率和优良隔振性能的光学工作台。
The optical characteristics of nonlinear optical crystals, especially several common mid-IR nonlinear crystals have been introduced in the research of nonlinear frequency conversion crystals.
在对非线性变频晶体的研究中，首先介绍了非线性光学晶体的光学特性，详细介绍了几种常用的中红外非线性晶体。
By analyzing the direct frequency modulation and optical feedback effect of laser diode, a theoretical model for measuring small vibration displacement and velocity is discussed.
分析了在直接频率调制下，激光二极管中的光反馈效应，探讨了振动微小位移和速度的理论模型。
By analyzing the direct frequency modulation and optical feedback effect of laser diode, a theoretical model for measuring small vibration displacement and velocity is discussed.
分析了在直接频率调制下，激光二极管中的光反馈效应，探讨了振动微小位移和速度的理论模型。
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