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pumping power
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  泵浦功率
     The output power of 13.17W,13.26W and 8.43W is obtained inspectively using the three crystals of 1mm length in 25W pumping power,and the optimal transmission rate inspectively is 24%,44% and 16%.
     在25W泵浦功率下,利用1mm长的Nd∶GdVO4,Nd∶YVO4和Nd∶YAG晶体可分别得到13.17W,13.26W和8.43W的输出功率,相应的输出镜最佳透过率分别为24%,44%和16%。
短句来源
     Using 940nm InGaAs LD pumped the 8mm×8mm×1mm Yb:YAG thin disk, in the condition of 1W cw pumping power, obtained the output power of 112.3mW at 1.03μm, with the optical-optical and slope-efficiency of 11.2% and 35%, respectively.
     用940nm的InGaAs LD泵浦8mm×8mm×1mm的Yb:YAG晶体薄片,在连续泵浦功率为1W的条件下,获得了112.3mW 1.03μmTEM_(00)激光输出,光—光转换效率为11.2%,斜效率为35%。
短句来源
     For the fundamental transverse mode operation, the self-doubling laser generates 2.2mW output power at 0.531μm with threshould pumping power of 14.31mW, and its slope efficiency is 2.1%;
     自倍频激光器产生0.531μm的绿色激光,基横模运转,阈值泵浦功率为14.31mW,输出功率达2.2mW,斜效率达2.1%。
短句来源
     A stable laser output with an average power of 305 mW,a peak power of 400 W,and a pulse width of 50 ns is achieved at a diode pumping power of 3.7 W and a repetition rate of 15 kHz.
     重复率为15 kHz、泵浦功率为3.7 W时,输出光平均功率为305 mW,脉冲宽度50 ns,峰值功率400 W。
短句来源
     Under CW pumping power of 570mW,the peak power of output beam exceeding 1100W with pulse width of 4.6 us is demomstrated.
     在连续570mW的泵浦功率下,绿激光脉冲的峰值功率达1100W,脉宽为4.6us;
短句来源
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  抽运功率
     Results11 W of CW 1.06 μm TEM_(00) mode output has been obtained at a 23.05 W pumping power with an optical-optical conversion efficiency of 47.72%.
     结果 在抽运功率为23.05W时获得了11W的1.06μmTEM00模激光输出,光 光转化效率为47.72%。
短句来源
     Under a pumping power of 3.6 W and pulse repetition rate of 10 kHz, the mid-infrared coherent radiation of OPO near 4.1 μm was achieved with output power of 0.7 W, pulse width of 20 ns, optical-optical conversion efficiency of 20% and threshold pump power of 0.65 W.
     在3.6W的抽 运功率下,脉冲重复频率10kHz,实现了4.1μm附近中红外激光输出,参量光脉冲宽度为20ns,平均输出功率为 0.7W,光 光转换效率为20%,抽运光阈值功率为0.65W。
短句来源
     When the pumping power is 12 W,the radii of pump beam is wp=320μm,the distortion of Nd:GdYVO_4 is 0.855μm.
     当抽运功率为12 W,抽运光斑半径w_p=320μm时,Nd: GdYVO_4激光晶体的热形变量为0.855μm。
短句来源
     At transmission of 10% and cavity length of 40 mm,the maximum average output power of 3.78 W is obtained when the incident laser pumping power is 8.6 W,which corresponds to an optical-optical conversion efficiency of 43.9%.
     在输出镜透射率T=10%、腔长L=40 mm的情况下,当抽运功率为8.6 W时,获得激光输出功率3.78 W,光光转换效率为43.9%。
短句来源
     Numerical results also demonstrate that considerable signal gain of 10dB can be achieved in a 3.2cm-long fiber amplifier with 20dBm(100mW) pumping power at 980 nm.
     数值计算表明,3.2cm长Er3+/Yb3+共掺光纤在980nm的20dBm(100mW)抽运功率下,1532nm处的增益可达10dB.
短句来源
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  泵功率
     When the pumping power density is 150W/cm~2 and the heat transfer coefficient through the surface of the slab is h=0.23W/cm~2℃, the measured results is in correspondence with the calculated values.
     结果表明在光泵功率密度为150W/cm~3、表面热交换系数H=0.23W/cm~3时计算值与测量值完全符合。
短句来源
     The results of theoretical calculation showed that the spikes in Raman spectrum of V 2∶aR(0,0)would appear,when the operating NH 3 gas pressure was higher than a certain critical value or pumping power density was lower than a certain critical value. This was caused by Raman processes interaction of AC Stark splitting.
     理论计算结果表明 ,当工作气压比某一特定值高或泵功率密度比临界值低时 ,将出现V2 :aR(0 ,0 )跃迁的拉曼频谱尖峰 ,其原因是ACStark分裂的双光子拉曼过程相互作用所引起的
短句来源
     The results of theoretical calculation showed that the spikes in raman spectrum of V 2:a→sR(0,0) would appear,when the operating NH 3 gas pressure was higher than a certain critical value or pumping power density was lower than a certain critical value.
     理论计算结果表明 ,对于 a→ s R(0 ,0 )跃迁 ,当工作气压比临界值 Pc高或泵功率密度比临界值 Ipoc低时 ,将出现 Raman频谱尖峰 ;
短句来源
     The heat transfer characteristics of the both passages are compared under the conditions of the identical mass flux, identical pressure drop and identical pumping power.
     在相同质量流量、相同压力降和相同泵功率等条件下,比较了两种通道的换热特性.
短句来源
     Compared with the smooth tube fin and INAN tube fin heat exchanger surfaces with the evaluation methods of heat transfer factor and heat load under same pumping power, it is shown that the heat load of the VG heat exchanger surfaces is 12% greater than that of smooth tube fin heat exchanger surfaces.
     运用传热因子、相同泵功率下换热量比等评价方法比较了VG、光片和INAN三种圆管管片式换热元件的传热与阻力性能。
短句来源
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  “pumping power”译为未确定词的双语例句
     Under the pumping power of 3 W laser diode(LD),the output powers are 1.27 W at 1 063 nm and 800 mW at 1 341 nm.
     用 3W激光二极管 (LD)泵浦 1mm厚的Nd :GdVO4晶体 ,得到了 1 .72W、1 0 63nm和 80 0mW、1 341nm的输出光
短句来源
     the double wavelength laser generates 9.2mW output power at 0.531μm and 1.062μm with threshould pumping power of 14.81mW, and its slope efficiency is 7%。
     双波长激光器同时产生0.531μm的绿色激光和1.062μm的近红外激光,基横模运转,阈值泵涌功率力14.81mW,输出功率达9.2mW,斜效率达7%。
短句来源
     A power of 50mW CW is achieved for 70.5μm line when the CO2 pumping power is about 22W.
     当泵浦CO_2功率为22W时,得到50mW的70.5μm谱线的连续输出功率。
短句来源
     The output power were 38.5 μW at pumping power 1 W and beam angle of divergence were 10 mrad,and threshold were 410 mW.
     在1W功率泵浦下,输出功率38.5μW,光束发散角为10mrad,阈值为410mW。
短句来源
     The net gain of Yb∶Er-codoped glass thread with 1.1g/cm~3 Yb-concentration and 0.12g/cm~3 Er-concentration is 3.07dB/cm,its threshold pumping power is 28mW and optimum length is 2.5cm.
     掺镱质量浓度为1.1g/cm3、掺铒质量浓度为0.12g/cm3的镱铒共掺硅酸盐玻璃丝,单位长度净增益为3.07dB/cm,阈值功率为28mW,最佳长度为2.5 cm。
短句来源
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  pumping power
It is found that the relaxation time decreased up to 2-4 times with increase in the pump duration and pumping power under the conditions of striction parametric instability (excitation of Langmuir plasma turbulence) over times t≤2.00 ms.
      
Measured gain of 3.1 dB at 200 m using 100 mW pumping power (980 nm wavelength) at 1550 nm has been obtained and the gain of 32 dB at 5.0 km using same pumping scheme has been predicted.
      
In an actively mode-locked laser, self-phase modulation can make pulse shorter at the expanse of causing instability at high pumping power.
      
The measured depolarization loss per transit for a test beam at 0.63 μm is less than 5% for pumping power up to 6kW per rod.
      
It turns out that in the first stage (up to a few nanoseconds, depending on the pumping power) this narrowing process is rather rapid, reducing the linewidth by a factor of about five, while it becomes slower and slower during further evolution.
      
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By combining the equation of motion of a magneto-elastically coupled system derived from a classical hamiltonian and the Maxwell equations with the propagation factor neglected, we obtained a differential equation which determines the magnetic oscillations accompanying elastic vibrations of a ferrite specimen of the usual size for magnetic resonance experiments. To each normal mode of elastic vibration of the specimen there exists an associated magnetic oscillation (namely, a magneto-acoustic mode). We pointed...

By combining the equation of motion of a magneto-elastically coupled system derived from a classical hamiltonian and the Maxwell equations with the propagation factor neglected, we obtained a differential equation which determines the magnetic oscillations accompanying elastic vibrations of a ferrite specimen of the usual size for magnetic resonance experiments. To each normal mode of elastic vibration of the specimen there exists an associated magnetic oscillation (namely, a magneto-acoustic mode). We pointed out that the magneto-acoustic resonance phenomenon discovered by Spencer and Le Craw is a special case of the parametric oscillation involving a magnetoacoustic and a magnetostatic mode. The arrangements for observing the oscillation involving a certain magnetostatic mode and magnetoacoustic modes and the theoretical estimate of the threshold pumping power were discussed.

在本文中,我们从磁-弹性耦合的宏观表达式,通过经典场论的方法,求得弹性振动和磁振璗的耦合方程,用来分析了伴随波长约等于铁氧体样品的线度的声振动而存在的磁振璗(磁声模)。文中指出,Spencer和LeCraw所发现的磁声效应是磁声模和静磁模在注入场的激发下产生的参量振璗现象(也可以说是热声子的电磁讯号的放大)。我们引用Berk等人在讨论一种半静磁操作放大器的文章中给出的公式,算出Spencer-LeCraw实验所需要的功率,其结果与记录的数据相接近。我们提出了使任一静磁模配合磁声模产生振璗的调谐条件以及降低激发功率和观测几十到几百兆赫的声频的办法。通过磁声模和静磁模的交变场向量的空间对称性的分析,我们推导出磁声参量振璗的选择定则:对于球体三个主要弹性振动模(旋转模、向径模和椭球模),(1)静磁模(n,m,r)的Walker指标n是偶数者不产生磁声效应;(2)指标m是奇数者不与旋转模产生磁声效应,m是偶数者不与向径模或椭球模产生磁声效应。我们也举出第一类本征振动中有只可能和n是偶数、m是奇数的静磁模产生参量振璗的例子。Spencer-LeCraw局限于使静磁场调谐在(110)模上,所观察到的现象仅仅是本文所给出理...

在本文中,我们从磁-弹性耦合的宏观表达式,通过经典场论的方法,求得弹性振动和磁振璗的耦合方程,用来分析了伴随波长约等于铁氧体样品的线度的声振动而存在的磁振璗(磁声模)。文中指出,Spencer和LeCraw所发现的磁声效应是磁声模和静磁模在注入场的激发下产生的参量振璗现象(也可以说是热声子的电磁讯号的放大)。我们引用Berk等人在讨论一种半静磁操作放大器的文章中给出的公式,算出Spencer-LeCraw实验所需要的功率,其结果与记录的数据相接近。我们提出了使任一静磁模配合磁声模产生振璗的调谐条件以及降低激发功率和观测几十到几百兆赫的声频的办法。通过磁声模和静磁模的交变场向量的空间对称性的分析,我们推导出磁声参量振璗的选择定则:对于球体三个主要弹性振动模(旋转模、向径模和椭球模),(1)静磁模(n,m,r)的Walker指标n是偶数者不产生磁声效应;(2)指标m是奇数者不与旋转模产生磁声效应,m是偶数者不与向径模或椭球模产生磁声效应。我们也举出第一类本征振动中有只可能和n是偶数、m是奇数的静磁模产生参量振璗的例子。Spencer-LeCraw局限于使静磁场调谐在(110)模上,所观察到的现象仅仅是本文所给出理论预见的一个特殊情况。他们发现了椭球模和向径模的频率显著地出现,但并无旋转模的频率,这是上述的?

The semiclassical equations which describe the behaviours of three-level lasers were derived. The method of nonlinear mechanics was used to treat the electromagnetic oscillations coupled with the dipole moments of molecules. It is shown that when the pumping power is larger than the critical value, the amplitude of output oscillations is stable (corresponding to a stable equilibrium point in phase space), only if the homogeneous line width of molecules (1/T2) is larger than the damping width of the resonan-tor...

The semiclassical equations which describe the behaviours of three-level lasers were derived. The method of nonlinear mechanics was used to treat the electromagnetic oscillations coupled with the dipole moments of molecules. It is shown that when the pumping power is larger than the critical value, the amplitude of output oscillations is stable (corresponding to a stable equilibrium point in phase space), only if the homogeneous line width of molecules (1/T2) is larger than the damping width of the resonan-tor (q). The appearance of instability of output oscillations is due to the effect of coherence. Furthermore, a stable limit cycle was shown to appear when the above mentioned equilibrium point becomes unstable as qT2 increases. Therefore, it seems true that there is no limit cycle near the equilibrium point when it is stable. These results may account for the instability of amplitude of output oscillations observed by some authors in ruby lasers, and should be checked in detail with gas lasers.

本文推导出描述三能级Laser工作过程的准经典方程组,并分析了输出振动的稳定性。在阈值以上,当T_1T_2,q~(-1)时,只在1/qT_2>1时,输出振幅是稳定的(其中T_1,T_2,q~(-1)分别是分子纵向、横向及谐振腔的弛豫时间)。在稳定区域,趋向平衡的时间与T_1成正比。当分子线宽小于谐振腔宽度时,输出是不稳定的,而在1/qT_2减小时,平衡点由稳定变到不稳定时产生一个稳定的极限环,即输出振幅逐渐开始振动。 关于稳定性的结论在气体Laser中是可以检验的。本文指出,在红宝石Laser中看到的输出不稳定,可能就是谐振腔的q很大的结果。

An experimental observation on stimulated emission of radiation at liquid nitrogen temperature is reported. The paramagnetic material is synthetic ruby with about 0.1% chromium in Al2O3. The pumping frequency lies at X-band range while the signal freqe-ncy is set at S-band. The dependence of saturation factor on pumping power is measured . The negative temperatuve effect on population distribution is observeb with a pumping power about 10-2 Watt. The ratio of population inversion is 0.44.

本文报导了在液氮温度范围内进行的微波受激发射的实验现象,工作物质是铬离子浓度为0.1%的人造红宝石。抽运频率和信号频率分别在X带和S带。测量了饱和因子和抽运功率的关系。用10~(-2)瓦级的X带抽运功率观测到信号能级的负温分布。得到粒子数的反转比为0.44。

 
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