| 1. | Recently , laser frequency standards have developed rapidly
近年来，激光频标得到了迅速发展。 |
| 2. | Numerical simulation and experimental research on 589 nm laser frequency - summed by lbo
激光的数值模拟及实验研究 |
| 3. | Look back the history of laser frequency conversion and present the present situation and the trend of quasi - phasematched ( qpm ) . 2
1 、回顾了激光变频的历史，着重介绍了准相位匹配及其材料的研究现状及发展方向。 |
| 4. | Utilizing quasi - phasematched ( qpm ) technique to achieve a given useful laser frequency conversion is a practical and challenging topic
利用准相位匹配( qpm )技术在光学超晶格中实现特定的可实用化的激光频率变换，在目前是一个富有实际意义和挑战性的课题。 |
| 5. | After obtaining optimized laser frequency 5hz accepted - pulse - times 10 / second by experiments , laser power density increased little by little is focused on study
实验在优化频率为5hz ，受光次数10次秒时，重点研究了激光能量密度由小到大对晶化性能的影响。 |
| 6. | This paper describes the important breakthrough of laser frequency measurements technology since 1999 , i . e . the absolute frequency value of laser frequency standards can be directly measured by femtosecond modelocked laser
摘要简述了自1999年以来激光频率测量技术出现的重大突破，用飞秒锁模激光可以直接测量激光频标的绝对频率值。 |
| 7. | It presents the mathematical models for the ppm modulation and demodulation circuits system . author gives out the conditions of linear modulation and demodulation , and educes its connection between the modulation factor and maximal laser frequency excursion
建立了ppm调制与解调的数学模型，给出了实现线性调制与解调的条件以及调制深度与最大激光频率偏移之间的关系。 |
| 8. | The main results and creative points in the dissertation were as follows : a ) by means of studying on the fiber - optic hydrophones ’ tdm array based on phase generated carrier ( pgc ) demodulation with laser frequency modulation , the mathematic models were set up , used for theoretical analyses of noncoherent crosstalks in the system using low coherent laser and coherent crosstalks in the system using high coherent laser . the formulas calculating crosstalks were given , and the method measuring crosstalks was shown definitely
本论文的主要研究结果和创新在于: 1 、通过对基于光频调制pgc (相位生成载波)解调光纤水听器时分复用系统的研究,针对低相干光源的串扰强度迭加和高相干光源串扰的相干迭加,建立了理论分析的数学模型,得出了计算串扰的公式,明确了测试系统串扰的方法。 |
| 9. | So qpm enlarge the application range of the crystal in existence . presently diode pumped all - solid - state lasers have been developing quickly , which provides an ideal pump source for qpm . so lower power all - solid - state laser frequency conversion by qpm has been becoming a research focus
近年来，随着激光二极管( ld )技术的发展，小功率全固态激光器已经十分成熟，为准相位匹配提供了优质的泵源，因此，小功率全固态激光器的准相位匹配频率变换成为目前的一个研究热点。 |
| 10. | This thesis first introduces the basic theory used in fog , and then analyses the resonator - one of the key parts . this analysis illustrates the output character under certain laser frequency width . the output character is converted into lorentz function form considering the laser frequency width
本文首先介绍了谐振式光纤陀螺的基本原理，对其关键器件- - -谐振腔的谐振特性做了分析，重点分析了在激光器频宽一定的条件下谐振腔的输出特性，并最终将其转化为包含了激光器频宽的洛伦兹函数形式。 |
