光谱特性

In this reaserch, we have studied the effect of pH value of sodium fluorescein in ethanol solution on its characteristics of laser energy conversion efficiency, absorption spectra and fluorescence spectra.

本文研究了荧光素钠乙醇溶液的pH值对其激光能量转换效率以及吸收光谱、荧光光谱等特性的影响。

Effect of Ca(superscript 2+) on the structural and electrocatalytic properties of horseradish peroxidase isoenzyme C was investigated.

通过比较辣根过氧化物酶同工酶C中Ca(上标 2+)移除前后的HRPC的光谱和电化学特性，阐明了Ca(上标 2+)的存在对HRPC的重要作用。

These pulses include a Gaussian pulse, a hyperbolic secant pulse, a Lorentzian pulse, a Poisson spectrum pulse, a asymmetrical hyperbolic secant pulse, a rectangular pulse, a chirped Gaussian pulse and a chirped super-Gaussian pulse.

本论文基于上述提及的基本概念、分析方法和衍射积分理论，以描述超短脉冲光束的数学物理模型(包括超短脉冲高斯光束、超短脉冲贝塞耳—高斯光束、超短脉冲拉盖尔—高斯光束和超短啁啾脉冲光束等)为主要研究对象，研究超短脉冲光束在自由空间、色散介质和通过光阑的传输特性和位相奇点附近的光谱异常行为。

The laser and optics properties of several kinds of laser glass have been discussed. A new method is pointed out to increase the output energy of power-limited laser that is high gain glass and low nonlinear refractive index coefficient n2 glass used in an amplifier together.

在分析几种激光基质材料的光谱和激光特性的基础上，提出了在功率受限型激光装置的主放大级中混合使用高增益激光玻璃和低非线性折射率n2玻璃的新思路，以期在降低n2的基础上提高激光装置的系统输出能力。

Modern spectral estimation method was used for the characteristic analysis of signal of inductively coupled plasma atomic emission spectrometry in frequency domain.

将现代谱估计方法用于电感耦合等离子体原子发射光谱信号的频域特性研究。

In addition, the effects of the pH value of initial solution and annealed temperature on luminescent properties of the phosphors were also studied.

除此之外，在分析样品的发射光谱时，还研究了反应液的pH值及热处理温度对发光特性的影响。

The absorption and reflection properties of the sublimated BTN-SubPc thin film are pretty good at 500 nm～650 nm, which matches well with the wavelength of semiconductor laser used in digital versatile disk systems.

在室温下测试了该亚酞菁染料在溶液和薄膜态的吸收光谱、薄膜态的反射和透过光谱，发现该薄膜在500nm～650nm波长范围内具有优良的吸收和反射特性。

By TM images the linear structures, water system, the outer edge of Tianchi Volcano trachite are extracted. By the sensitivity of SAR images to geomorphology, the distribution of parasitical volcano cone and lava fornix around Tianchi volcano are interpreted. With the aerial photos the parasitical lava of Qixiangzhan, Baiyun and Bingchang stage are filtered. At the same time by orthogonal cross-course wavelet transform, texture analysis is carried on to ERS-2 SAR images, and the texture characters are filtered. On the basis of the spectrum character of multi-band of TM images, multi-band algebraic grouping is made, and the factor of texture character factor and band grouping of TM images are input to BP neural network classification model. The good classified results are received.

利用TM图像对线性构造、水系、天池火山粗面岩锥体外边缘的提取；利用SAR图像对地形敏感特性，提取了天池火山周围寄生火山锥体及熔岩穹丘的分布；利用航片对天池火山口周围的气象站期、白云期、冰场期等寄生喷发物进行了提取：同时利用正交小波变换对ERS-2 SAR图像进行了纹理分析，提取了纹理特征：根据TM图像不同波段的光谱特征，进行了波段代数组合，并把纹理特征参数与TM图像的波段组合及DEM一起输入BP神经元网络分类器，取得了较好的分类效果。

Choose the 890nm infrared LED as the light source after compared the capabilities of incandescent lamp/tungstic lamp and LED/LD and also think about the selective absorbability of water; it has strong points such as constant light intensity,long life, narrow light spectrum,etc, and use the infrared light with 890nm wavelength to decrease the influence of optical-absorption matters.Choose the photosensitive diode which suitable to the LED which we choosed after compare the capabilities of light sensitive resistor, photocell, photosensitive diode and phototriode. Both of these make up the photoelectric system of turbidimeter.

通过比较白炽灯／钨灯和发光二极管／激光二极管的各项性能指标，考虑到水对光线具有选择性吸收作用，选择890nm的红外发光二极管作为浊度仪的发光器件，其有发光光强稳定、寿命长、发光光谱窄等优点，且用波长大于800nm的红外光进行测量可以大大减小水中光吸收物质的影响；通过对光敏电阻、光电池、光敏二极管和光敏三极管等光敏器件的各项性能的分析与比较，选择响应时间短、输出特性线性度好的光敏二极管作为光接收器件，并与红外发光二极管相配套，构成浊度仪工作的重要系统——光电系统。

A FDTD program was written and the electromagnetic fields for various polarized incident beams are calculated and the polarization states of the diffractive waves are extracted. The relation between the polarization state of the diffraction wave and the grating balzed angle and polarization angle for the linearly polarized incident wave is analyzed; In the spectral range of 1530 ~ 1570nm, the polarization dispersion is studied for the linearly and circularly polarized incident beam.

用时域有限差分程序计算出任意偏振方向线偏光经过闪耀光栅衍射后的电磁场分布，提取衍射波的S偏振和P偏振分量，分析它们与光栅闪耀角和入射光波偏振角的关系；分析在1530 -1570nm光谱范围内，入射光波为线偏振波和园偏振波时，衍射光波的偏振色散特性与光栅闪耀角的关系。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。