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By using Xenon flash pumped, Cr4+:YAG Q-switched Nd.YAG cavity as thepump source, an intracavity KTP-OPO system lasing at 1.57 u m wavelength is realized. Output performance for different Cr4+:YAG small signal transmissions and different 1.57 u m output transmissions is demonstrated.

实验研究了氙灯泵浦、Cr~(4+)：YAG被动调Q的1.06μm Nd：YAG激光器的静态和动态输出特性，分析了1.06μm探索了泵浦外腔OPO系统所需的单脉冲输出条件。

Keywords Vanadium;Dual-wavelength;Dual-indicator;Catalytic spectrophotometry;Acridine orange;Acid chrome blue K

钒； 双波长；双指示剂；催化光度法；吖啶橙；酸性铬蓝K

Methods:Vanadium was determined by dual-wavelength catalytic spectrophotometric method which was based on the vanadium catalyzing oxidation of acridine orange and acid chrome blue K by potassium bromate in 0.010 mol/L H2SO4 medium.

在硫酸介质中，利用钒催化溴酸钾氧化吖啶橙和酸性铬蓝K褪色反应，分别在476 nm和556 nm处测量催化体系和非催化体系的吸光度的变化，用双波长催化光度法测定痕量钒。

Therefore, the nickel impurity in the chromium-plating bath was determined using spectrophotometry, which was based on the reaction between nickel ions and diacetyldioxime, generating a red complex, in the presence of alkali and ammonium per-sulfate. The measurement was carried out in 3cm color-matching cells at a wavelength of 510nm, using the sample without chromogenic agent as the reference.

在碱性和过硫酸铵存在的条件下，镍离子与丁二酮肟生成水红色配合物，利用这一特性，以丁二酮肟光度法测定镀铬溶液中镍杂质的含量，以不加显色剂的试样作参比液，用3cm比色皿，在波长510nm处测定。

This indicates that these HA have similar compositions, but different structures and properties.Results from analysing E465/E665 are the same as those obtained by analysing molecule structure using colour index coefficientΔ~ K.Compassion study of HA in NaOH and NaHCO_3 solutions show that the absorption peaks shift towards the direction of longer wavelength.

这几个吸收带的变化证明了以紫色潮土HA、石灰性黄壤HA、中性紫色HA、酸性紫色HA、腐殖土HA为序的腐殖酸的芳构化度降低、缩合程度下降的观象，说明腐殖土HA其分子在苯环C骨架的聚合程度、芳构化度和分子复杂程度等上均最小，与紫外光谱分析结果一致。

The absorption coefficients of these two high concentration EDFs reach 66.3dB/m and 59.5dB/m at wavelength of 1530nm respectively, Short cavity ring structure high concentration EDF lasers with these two high concentration silica host high concentration EDFs were presented.

利用这两种石英基高浓度掺铒光纤，采用环形结构制作出了短腔的光纤激光器，光纤激光器中铒光纤长度分别仅为30cm和90cm。

By analyzing the characteristic of transition and corresponding stimulated-emission cross section in Nd:YAG crystal, according to the coupling condition of energy transition and material-determined wavelength, reasonable coupling parameters of laser rod and cavity mirrors were designed.

通过分析Nd：YAG的跃迁谱线和相应的受激发射截面的特点，根据多跃迁谱线激光材料波长选择的耦合率条件，合理设计激光棒和腔镜的耦合率参数。

Semiconductor optical amplifier ; wavelength conversion ; transient cross phase modulation

半导体光放大器；波长转换；瞬态交叉相位调制

Extinction equalization in wavelength conversion by cross gain modulation .

基于半导体光放大器中交叉增益调制效应的波长转换啁啾特性的分析。

All-optical wavelength conversion based on transient cross phase modulation of semiconductor optical amplifieris a promising approach to achieve high-speed all-optical signal processing.

采用半导体光放大器中的瞬态交叉相位调制效应是实现高速全光信号处理的有效途径。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。