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third-harmonic conversion
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  “third-harmonic conversion”译为未确定词的双语例句
     Furthermore,the suitable chirp of fundamental field can reduce the distortion of third-harmonic pulse and increase the third-harmonic conversion efficiency.
     合适的基频光频率啁啾可以减小三倍频光脉冲的畸变,并有效地提高三倍频转换效率.
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     third, design;
     3、设计。
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     the third :Qingshuihe;
     第三类:清水河扁蓿豆;
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     third,self-regulation.
     自我调控。
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     HARMONIC DIVIDER
     调和仪
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     On Conversion
     论转化构词法
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  third-harmonic conversion
A third-harmonic conversion efficiency of up to 4×10-4 was achieved for one of the dyes investigated (1,3,3,1',3',3'-hexamethylindocarbocyanine iodide in hexafluoroisopropanol).
      
Results of our numerical calculations show that a two-color filamentation effect occurs, in which the third-harmonic conversion efficiency remains almost constant over the whole filament length.
      
At a pump pulse peak intensity ofI10=5×1010W/cm2 a third-harmonic conversion efficiency of a percent is obtained.
      
Coherent radiation at 89.6 nm has been obtained through third-harmonic conversion of the 268.8 nm pulses in mercury vapors.
      
Third-harmonic conversion of hexamethylindocarbocyanine iodide, diethyloxacarbocyanine iodide and fuchsin red are compared.
      


AbstractHigh power short wavelength broad-band laser has a lot of advantages for plasma experi- ments,such as increasing the absorption,improving target illumination uniformity and so on. Traditional third harmonic conversion scheme with KDP,however,can only be used for laserbandwidth less than 0.2nm. Therefore, to develop harmonic conversion techniques on broad- bandlaser is very important for ICF and x- ray laser research.For this purpose, new conversionschemes such as angular spectral dispersion(ASD)and...

AbstractHigh power short wavelength broad-band laser has a lot of advantages for plasma experi- ments,such as increasing the absorption,improving target illumination uniformity and so on. Traditional third harmonic conversion scheme with KDP,however,can only be used for laserbandwidth less than 0.2nm. Therefore, to develop harmonic conversion techniques on broad- bandlaser is very important for ICF and x- ray laser research.For this purpose, new conversionschemes such as angular spectral dispersion(ASD)and crystal quadrature have been proposed. Based on our calculated results of the spectral and angular acceptanee for LBO crystal,inthis paper we have proposed to use LBO in traditional conversion scheme for efficientbroad- band laser harmonic conversion. We have studied all the phase- matching possibilities for frequency doubling and triplingbased on Sellmeier's equation. In our calculation,only the phase- matchings in principal planesare considered, since their large nonlinear coefficients.We have found that type Ⅰdoubling andtripling are only possible in xy plane,while typeⅡdoubling and tripling are in yz plane asshown in Table 3.By numericddl calculations of coupled wave equations,we found that only 4mmthickness is required for LBO when fundamental intensity is around 1.5GW/cm ̄2,while 14mmthickness required for KDP crystal.The s pectral and angular acceptance for all interactions in4mm thick LBO at 1.054μm are calculated as shown in Table 5.the values for KDP are alsogiven as comparisons.As a md,in result,tripling spectral acceptance of LBO are much larger thanthose of KDP,efficient tripling can be achieved for bandwidth of about Inm in traditionaltripling scheme with LBO crystal.

实现宽带高功率钕玻璃激光高效谐波转换的关键在于选择合适的非线性晶体和技术。文中给出了波长为1.054μm的基波光脉冲在LBO晶体中的各类倍频及三倍频相位匹配,着重分析了LBO的光谱接受范围和角度接受范围。结果表明,采用成熟的谐波转换技术,选用LBO晶体,可实现lnm左右的宽带高功率激光的高效三倍频转换。

AbstractUsing short wavelength laser to drive ICF capsules have been recognized for some time,it can increase the efficient absorption of laser energy and reduce hot electrons of fuel beingpreheating.We have made third harmonic conversion experiments on Xingguang laser facility.The polarization-mismatch scheme with twoφ80mm ×14mm potassium KDP crystals isadopted;In experiment,we selected design scheme,optinuzed crystals length by theorycalculation and built up a three dimention rack for crystals at first,then...

AbstractUsing short wavelength laser to drive ICF capsules have been recognized for some time,it can increase the efficient absorption of laser energy and reduce hot electrons of fuel beingpreheating.We have made third harmonic conversion experiments on Xingguang laser facility.The polarization-mismatch scheme with twoφ80mm ×14mm potassium KDP crystals isadopted;In experiment,we selected design scheme,optinuzed crystals length by theorycalculation and built up a three dimention rack for crystals at first,then converse thefoundmental wave.When input foundmental wave intensity to the first crystal is more than0. 7GWl/cm ̄2,external third haimonic conversion energy efficiency is about 60%, second harmonicconversion is about 70%,the maximum is 66.8% for third harmonic and 76.8% forsecond-harmonic.Some factors effected third harmonic conversion have been researched.Basing on all of these results,we can get high effciency and high stability third-harmonicconverslon.

利用两块φ80mm×14mmKDP晶体,采用“偏振失配”方案在“星光”装置φ70输出光路上,进行了三倍频实验。在入射光功率密度约为1GW/cm ̄2时,获得最高的二倍频外部能量转换效率为76.9%,三倍频最高外部能量转换效率为66.8%,并且转换重复性和稳定性很好。同时,也通过实验研究了影响三次谐波转换的诸因素。

The mechanisms of CLBO crystal using for high efficiency third harmonic conversion are discussed, and the basic characters of high efficiency harmonic conversion on theory is analyzed. The numerical simulation of basic parameters of third harmonic conversion for CLBO crystal on the high power laser facility are presented. Compared the characters of third harmonic conversion with KDP crystal. Provided basic conditions using for to generate high efficiency third harmonic conversion...

The mechanisms of CLBO crystal using for high efficiency third harmonic conversion are discussed, and the basic characters of high efficiency harmonic conversion on theory is analyzed. The numerical simulation of basic parameters of third harmonic conversion for CLBO crystal on the high power laser facility are presented. Compared the characters of third harmonic conversion with KDP crystal. Provided basic conditions using for to generate high efficiency third harmonic conversion of CLBO crystal.

讨论了CLBO晶体用于高效率三倍频的机理,从理论上分析了产生高次谐波转换的基本特性,对CLBO晶体在高功率激光装置中产生高效率谐波转换的基本参数进行了数值模拟计算,并与KDP晶体三次谐波转换的特性进行了比较,给出了CLBO晶体产生高效率谐波转换的基本条件。

 
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