Then partial least squares method was used for selecting the effective wavelength interval of illumination. 然后应用偏最小二乘法选择合适的光源波段间隔。
Theoretical calculations and results show coupling length occurs one or more extreme points with increasing temperature, and odd effective index changes greatly with temperature or the wavelength. 理论计算结果表明,耦合长度随温度升高出现单极值或多极值点,奇模式的有效折射率随着温度的变化或波长的变化会出现跳变情况。
It is an effective method for the control of sensitivity in different wavelength range that desensitizing dye is added to the spectral sensitized emulsion. But so far, there have been various explanations with the desensitization mechanism. 将减感染料加到光谱增感乳剂中是控制不同波段感光度的有效手段,但是有关减感机理一直以来尚有不同的解释。
Dependences of effective indices for fundamental core mode and cladding mode on the wavelength, and the transmittance spectra after coupling are studied. 研究了基于掺铒光纤的长周期光纤光栅的纤芯基模、包层模式的有效折射率随波长的变化关系,及两者之间耦合后的透射谱线。
Objective: To investigate the most effective wavelength and parameter of lasers applied in the removal of different tattoos. 目的:为研究对正常皮肤无损伤、合适、有效的波长和治疗参数。
This paper indicates that grating is an effective element for measuring of wavelength of wide incident angle, wide band, pulsed laser. 预见到光栅是实时测量大视角、宽频带、脉冲激光波长的有效元件。
Through investigating the FWM power as function of channel power and channel space, it showed that the new phase-matching factor was more effective, the relationship of parametrical gain in FWM V. S. pump wavelength and pump power were discussed. 分析了在色散位移光纤中四波混频的参量增益与泵浦光波长的关系,四波混频参量增益与泵浦光功率的关系。
Genetic algorithms is an effective method in wavelength selection applied in building multivariate calibration model based on partial least squares regression. 遗传算法(GA)应用在偏最小二乘法(PLS)校正模型的波长优化选择中具有显著的效果。
But the influence of extinction coefficient on the cladding mode effective index and resonant wavelength is small. 但消光系数对有效折射率和谐振波长的影响则很小。
Using a finite element method, cladding-effective-index and effective mode-index are accurately calculated, and mode distributions in different photonic crystal fiber of various wavelength light are given, the results are consistent with the experiments. 使用有限元法精确求得了光子晶体光纤的包层有效折射率和有效模折射率的数值解;给出了不同波长的光在不同结构光子晶体光纤中的模场分布,其结果与实验图样一致。
Theory of Effective Wavelength and Traceability of Spectral Radiation Temperature 有效波长理论与亮温跟踪
Its objective is trying to offer the best balance among delay, load and the cost of wavelength conversion in addition to improving the effective wavelength utilization and failure restoring rate. 该机制以网络延迟、负载、波长转换代价达到平衡的最佳值为目标,兼顾波长资源的高效利用和故障恢复率的提高。
An effective method for channel wavelength stabilization in WDM communication system WDM通信系统中信道波长稳定的一种有效方法
The theoretical formulas for the filling factor, effective dielectric constant, reduced wave impedance and reduced waveguide wavelength are given. 给出有关填充因子、有效介电常数、约化波阻抗和约化波导波长的理论公式。
An Effective Method to Improve Precision in Laser Wavelength Measurement 提高激光波长测量精度的有效方法
Conclusion: It is a safe and effective treatment method that the laser of semiconductor wavelength treats the conjunctiva pigment mole ( spot). 结论:半导体波长激光和ND:YAG激光治疗结膜色素痣(斑)是安全,有效的治疗方法。
The results indicated that laser photocoagulation for NVG was effective and safe. The authors emphasized that early diagnosis and timely photocoagulation therapy with laser of appropriate wavelength or combination of wavelengths were important for good results. 实践表明:早期诊断、选择波长合适的激光并联合使用不同波长的激光,以及及时进行治疗,对于视网膜光凝治疗新生血管性青光眼是非常重要的。
According to Planck's law and combinig the effective wavelength determination technology in situ, spectral radiance of a blackbody was measured by this pyrometer to calculate the blackbody temperature. 该高温计测量黑体的光谱辐射亮度,结合有效波长原地测量技术,直接依据Planck辐射定律计算被测温度,具备单一参考点分度确定温标的技术能力。
The error analysis, the structure of the comparator, the realization of the freezing gold point, the calculation of the effective wavelength and the method of extending the temperature scale are also given. 简要介绍了光电高温比较仪的结构、金凝固点的复现、有效波长的计算及温标延伸方法。
Analyzing DOE using scalar diffraction theory is effective when the size of DOE is much bigger than wavelength. 在元件尺寸远大于波长量级时,用标量衍射理论分析元件是有效的。
The experiment and analysis prove that effective grating coupling can be achieved through the reasonable design of a 2D grating for very long wavelength QWIPs. 实验与计算结果证明,合理地设计二维光栅,进行甚长波QWIP光耦合,可以获得有效的光耦合效果。
The exploration on effective wavelength and its displacement for a photoelectric pyrometer 关于单波段光电高温计有效波长及波长位移的探讨
Thirdly, the effective time to add the wavelength stabilization feedback is the time when the FEL work steadily. 再次,加入反馈系统的时机最好是在系统达到稳定之后。
One of the most effective and feasible ways of broadening the range of the output wavelength is using frequency conversion of non-linear Crystal under the condition of phase matching. 拓宽激光输出波长的范围最常用最有效的方法之一是利用非线性晶体在相位匹配条件下的频率变换技术。
And using the parameterization model and an "effective" wavelength model, a method to retrieve aerosol optical depth from the exposure radiation is proposed. 应用该模式和一个等效波长模式,发展了一个从太阳直接曝辐量反演气溶胶光学厚度的方法。
Compared with the effective velocity analysis on wave theory, the experience analyses such as the half wavelength technique are discussed. 通过与波动理论分析得到的有效相速度比较,对半波法等近似分析方法进行了分析、讨论;
Effective Wavelength of High Temperature Photoelectrical Comparator and its Error Analysis 光电高温比较仪的有效波长及其误差分析
Selective emitter technology has proven to be an effective way to improve the conversion efficiency of cells, which can significantly improve the short wavelength response of cells. 选择性发射极技术已被证明是有效提高太阳电池转化效率的方法之一,它可显著提高太阳电池的短波响应。
In this dissertation, a simple and effective method of wavelength conversion for polarization modulated signal is proposed, which makes use of polarization property of four-wave mixing effect. 论文提出一种适于新型偏振调制格式信号的全光波长转换原理,该原理利用四波混频效应中产生光与输入光偏振态的相关性。
However, rutile TiO2 under UV light was only good optical activity and photoinduced electrons and electronic-hole more likely to composite. Doping is a better means of changing the effective wavelength range of photoelectricity activity. 然而金红石相TiO2仅在紫外光条件下才具有良好的光电活性,且光生电子空穴对较易复合。