| 1. | The cavity length is measured to be about 48 m and the cavity losses are determined by the cavity ring - down ( crd ) technique
7 )建立了一套超高精细度光学微腔，腔长约48林m 。 |
| 2. | Based on the change of misalignment sensitivity with the length of cavity , a kind of ring - down cavity is put forward , which is stable resonator , and its cavity length is 0 . 73 times as that of confocal cavity
摘要基于谐振腔失调灵敏度参量随腔长的变化关系，提出了一种衰荡腔，它是由共焦腔将腔长缩短为原来的0 . 73得到的稳定腔。 |
| 3. | The influences of optical feedback and external cavity length on the laser output are studied , and the relation between fluctuations of speckle signal and the transverse velocity of rough surface is discussed
分析了随机变化的反馈强度与外腔长度对激光光谱特性的影响。模拟了散斑干涉信号的波动与粗糙表面横向移动速度的关系。 |
| 4. | Some factors related to the trap potential and heating rate are considered , such as the laser detuning , the changing of cavity length , laser power of trapping beam , and the linewidth of laser . 7 ) an ultra - high finesse micro - cavity is established in our lab
6 )对超高精细度微腔内光学偶极阱进行了数值模拟，研究了光场失谐、腔长变化、功率、以及线宽等参数对腔内偶极阱的阱深以及加热率的影响。 |
| 5. | According to propagation equation of gaussian beam and matrix of misadjust resonator , as well as principle of cavity ring - down method and data processing of fitting , a physical model of reflectivity measuring is set up for misadjustment of cavity length or angle of titled cavity mirrors
根据光束传输规律和失调腔矩阵方法，以及光腔衰荡法测量原理和曲线拟合方法，建立了腔长、腔镜角度失调下光腔衰荡法的反射率测量模型。 |
| 6. | Fiber lasers are very sensitive to environmental perturbations such as temperature fluctuations and mechanical vibrations due to their relatively long cavity length when the external environment changing . the cavity drifting produceing the phase noise and amplitude noise , this can cause the output pulse unstablely
但由于主动锁模光纤激光器腔内有较长的光纤,而光纤的长度极易因外界环境的影响而发生漂移,因而调制频率和腔长很难保持匹配。 |
| 7. | Used as ring - down cavity , this stable resonator has , firstly , more influence of misalignment of cavity mirrors on its measured reflectivity , but less of length misadjustment ; secondly , shorter cavity length which advantageous in engineering ; finally , less diffraction loss and thus higher metrical precision
结果表明，这种稳定腔用作衰荡腔，测量结果受腔镜角度失调影响较大，而受腔长失调影响小；其长度较短，便于工程应用；衍射损耗较小，测量精度高。 |
| 8. | In this work , based on the threshold condition of the fiber grating external cavity semiconductor laser ( fgesl ) which the phase of the fiber grating has been included , the effect of the temperature variation and the fg external cavity length on the lasing wavelength of the fgesl has been investigated theoretically . in addition , we have used the phase condition of fgesl to get the longitudinal mode distribution of fgesl , then the influence of the injected current on the output characteristics of fgesl has been studied
基于此，本文中利用阳实际的反射相位分布，计及半导体激光器( ld ) 、外腔及光纤光栅( fg )三者的共同作用，根据fgesl满足的闽值条件，从理论上研究了温度及外腔长度的变化对fgesl激射波长的影响;根据fgesl中纵模所满足的相位条件得到其纵模分布后，利用fgesl满足的多模速率方程，研究了ld的注入电流对fgesl输出特性的影响。 |
| 9. | ( 2 ) under certain temperature , for a short external cavity , a slight change of the external cavity length will result in an obvious variation of the lasing wavelength ; and for a long external cavity ( > 10cm ) , the change of the external cavity length gives almost no effect on the lasing wavelength
当温度保持一定时，对于短外腔，外腔长度的微小变化可以导致fgesl的激射波长产生显著的变化;而对于长外腔(尤其当外腔长度大于10cm )时，外腔长度的变化对fgesl的激射波长基本没有影响。 |
| 10. | 4 . the theory of cavity enhanced absorption spectroscopy is studied in detail and the numerical simulation is firstly demonstrated . in addition , we analyze the variation of sensitivity and linearity of this technique with the scan speed of incident light frequency or absorption cavity length
深入研究了腔内增强吸收光谱的理论，首次给出了具体的解析表达形式及数值模拟计算结果，分析了腔内增强吸收光谱测量的灵敏度、线性度与激光频率扫描速度、吸收腔长改变速度的关系。 |
