1)  optical parametric oscillator
光参变振荡
1.
In order to find out temperature influence on 2μm KTA OPO(KTA optical parametric oscillator) laser,the temperature effect on phase-matching angle and nonlinear coefficient was calculated,the graph of the relationship between the temperature and the tunable-angle was drawn and the walk-off angle and accept angle of the phase-matched crystal in different temperature were analyzed.
为了了解温度对2μm KTA光参变振荡器的影响,从光学频率变换所遵循的能量守恒与动量守恒出发,利用双轴晶体KTA的塞耳迈耶尔方程、热光色散方程、折射率椭球方程计算出了不同温度下满足相位匹配条件的晶体切割角,绘制出了角度调谐和温度的关系曲线图;采用计算有效非线性系数的近似算法,对晶体的有效非线性系数受温度的影响进行了计算;对不同温度条件下满足相位匹配条件的晶体的走离角、允许角进行了分析。
2)  optical parametric oscillator
光参变振荡器
1.
Experimental study of a kalium titanyl arsenate optical parametric oscillator in the mid-infrared band;
中红外砷酸钛氧钾光参变振荡器的实验研究
2.
In order to confirm that KTiOAsO4 can be used in optical parametric oscillator(OPO) to generate 2 μm laser,the pulsed 2 μm KTA OPO which uses θ=49°-cut KTA as a nonlinear crystal to generate 2 μm laser light is designed.
为了验证KTiOAsO4(KTA)晶体用于光参变振荡产生2μm激光的可行性,设计了脉冲式2μm KTA光参变振荡器,采用θ=49°切割的KTA晶体作为光参变振荡晶体,实现了2μm激光的输出;计算了该系统在双谐振情况下的起振阈值,在实验中测得输出的信号光、闲频光波长在2。
3.
The non resonant KTP optical parametric oscillator (NRO) with two walkoff compensating crystals has been demonstrated, which is characteristic of single wavelength output at forward and backward direction and preventing from gain saturation.
研究了双晶体走离补偿、非谐振腔型KTP光参变振荡器 ,利用一套膜片实现了KTP相位匹配所允许的全波段调谐 ,信号光调谐范围 0 6 98μm～ 1。
3)  optical parametric oscillator(OPO)
光参变振荡器（OPO）
4)  singly resonant optical parametric oscillator
单共振光参变振荡器
1.
The power characteristics formulations for a steady-state operating,self-pumped singly resonant optical parametric oscillator(SPSRO)are derived.
推导了稳态运行的自抽运单共振光参变振荡器(Self-Pumped Singly Resonant Optical Parametric Oscillator,SPSRO)的功率特性表达式。
5)  laser parameter
激光参数
1.
The material properties such as the powder com-ponent and the physical properties,the laser parameters such as the laser power,the scan velocity,the scan vectorlength and the hatching distance as well as the processing parameters such as the layering thickness of powder,thebed preheating temperature and the atmospheric control,which all affect the sint.
分析了纯佥属粉末、预合金粉末和多组分金属粉末的选择性激光烧结成形机制;详细讨论了粉末的化学成分和物理性质,激光功率、扫描速率、扫描矢径、扫描间距等激光参数以及粉层厚度、粉床预热温度、保护气氛等工艺参数对成形机制的影响;并简要讨论了金属粉末选择性激光烧结技术的进一步研究方向。
2.
In the course of repetitive pulse laser propulsion,inputting laser parameter,including energy,wavelength,pulse duration,facula size and repetitive pulses,and so on,have direct influence on the propulsive performance of laser propulsive working medium.
06μm2种波长激光与工质相互作用的实验研究成果,通过对实验数据进行科学分析,得出输入激光参数与工质推进性能的关系,并给出约定条件下优化激光输入参数。
3.
In this paper, the effect of the different laser parameter against the electronic residual energy is mainly studied.
文中主要研究不同激光参数 (泵浦激光的偏振特性 ,泵浦激光的波长 ,激光强度 ,电离能等 )对等离子体中电子剩余能量的影
6)  fluorescence parameter
荧光参数
1.
Using vitrinite reflectance,fluorescence parameters of sporinite, biomarker parameters, the characteristic and stage of thermal maturity of Mesozoic organic matter in Santanghu Basin were studied in detail.
运用镜质组反射率、袍子体荧光参数、生物标志物参数详细研究了三塘湖盆地中生界烃源岩的有机质热演化特征及演化阶段。
2.
SNP treatment could enhance the activity of superoxide dismutase(SOD) and peroxydase(POD),and decline of chlorophyll content and chlorophyll fluorescence parameter Fv/Fm and Fv/Fo of alfalfa seedling.
1 mmol/L硝普钠(SNP)减缓干旱胁迫下苜蓿幼苗细胞膜透性的增加,使过氧化氢酶(CAT)先升后降,超氧化物歧化酶(SOD)和过氧化物酶(POD)活性持续升高,减缓叶绿素含量和叶绿素荧光参数Fv/Fm、Fv/Fo的降低,表明外源NO处理提高了苜蓿的抗旱性。
3.
The fluorescence parameters of the 1st, 2nd, 3rd and 4th leaves from the top of culms in two rice varieties (Huajing 2 and Wuxiangjing 9) were measured with FMS-2 at different growth stages under three nitrogen levels, and the leaf nitrogen contents were correspondingly determined by destructive sampling and chemical assay.
在3个供氮水平和2个水稻品种(华粳2号和武香粳9号)的田间试验条件下,测试分析了不同处理水稻顶部4张完全展开叶片氮含量及对应的荧光参数。
参考词条
补充资料：光参量振荡
    　　一束频率为vP(泵频) 的强激光和一束频率为vS（信号频率简作信频）的弱激光同时射入非线性介质时，如信频光被放大,同时产生频率为vi(vP=vS+vi)的闲置频率光，这种现象称为光参量放大。若将此非线性介质置于谐振腔中（见图）,腔镜 M1对泵频光透射，M1、M2对信频光或闲频光（或两者）高反射,则在频率为vP的激光作用下,从M2镜将输出频率为vS和vi的激光。这就是光参量振荡器。它是一种可调谐激光器，可以以脉冲工作，也可以连续工作。
　　
　　
　　双谐振荡器的谐振腔镜对vS和vi都具有高反射率,其阈值较低，但转换效率最多只有50％。单谐振荡器的谐振腔镜只对vS（或vi）具有高反射率，其阈值较高,但转换效率高，理论上可达100％。
　　
　　光参量振荡器对满足墹κ=κP-κS-κi=0，即vPnP=vSnS+vini 的信频和闲频光具有最大的增益。这称为相位匹配条件。式中，κP、κS、κi和nP、nS、ni分别为泵频、信频、闲频光的波矢和折射率。实现相位匹配的方法，主要是利用晶体的各向异性和色散。
　　
　　光参量振荡器只对满足相位匹配条件的信频和闲频光才具有最大增益。因而用某种方法改变晶体的折射率（通常nP、nS和ni的改变量并不相同）,信频和闲频光的频率便也发生相应变化，从而实现光参量振荡器频率的调谐。通常改变晶体的温度和取向（角度）可在大范围内调谐，而利用外加电场和压力可进行小范围细调。
　　

说明：补充资料仅用于学习参考，请勿用于其它任何用途。