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harmonic conversion    
相关语句
  谐波转换
    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.
    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。
短句来源
  次谐波转换
    CHARACTER RESARCH OF THIRD HARMONIC CONVERSION WITH CLBO CRYSTAL
    CLBO晶体用于三次谐波转换的特性研究
短句来源
    Chirp Matched Third Harmonic Conversion for Broad-Band Lasers
    宽频带激光的啁啾匹配型三次谐波转换
短句来源
    Study on the effect of second harmonic conversion on the pulse width
    二次谐波转换对激光脉宽影响的实验研究
短句来源
    We have also discussed the effect of the beam divergence on the second harmonic conversion efficiency.
    还讨论了泵浦束的发散角对二次谐波转换效率的影响。
短句来源
    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.
    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。
短句来源
  谐波转换
    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.
    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。
短句来源
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  harmonic conversion
The solution assumes a nondepleted pump and results for a numerical computation of second-harmonic conversion efficiency for a highly efficient process are presented.
      
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).
      
Variation of the minimum pulsewidth with intracavity bandwidth and the harmonic conversion efficiency is presented in the form of graphs.
      
In this report we examine the second harmonic conversion characteristics of a 3.8?mm thick birefringently phase matched Yb:YAB crystal which is then examined in more detail by slicing into four thinner sections each approximately 400?μm thick.
      
We show that the double grating feedback improves the second harmonic conversion efficiency by several orders of magnitude as compared to the freely running laser.
      
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in this paper we have proposed and studied the following 3 basic problems in beam propagation:1) defination of beam quality and its measurements;2) arbitrary beam propagation through real optical systems and 3) nonlinear propagation of real laser beams.Here,we are interested in the methods to solve these problems.We have analytically investigated the beam quality by assuming the phase aberrations as Gaussian random variables.For the nonlinear harmonic conversion of real laser beams,we have developed a...

in this paper we have proposed and studied the following 3 basic problems in beam propagation:1) defination of beam quality and its measurements;2) arbitrary beam propagation through real optical systems and 3) nonlinear propagation of real laser beams.Here,we are interested in the methods to solve these problems.We have analytically investigated the beam quality by assuming the phase aberrations as Gaussian random variables.For the nonlinear harmonic conversion of real laser beams,we have developed a theory by applying the spatial spectrum analysis to the nonlinear coupling.

提出并研究了光束传输领域有待解决的三类基本问题:1)光束质量的定义及实际测量方法比较;2)任意光束经实际光学系统的传输;3)任意实际光束的非线性传输。主要着重于提出解决问题的方法,具体地以高斯随机变量模拟位相畸变,解析地分析了光束质量与位相畸变特征量间的关联;以按空间频谱展开方法,处理任意光束的非线性谐波转换过程。

AgGaSe2 crystal of φ 20 × 60 mm has been grown by the method of oven temperature drop. The frequency-doubled (5. 3 μm) output and the power conversion efficiency of 1. 12% have been obtained for second harmonic generation of TEA CO2 laser (10. 6 μm). The pumped and the damaged threshold are about 3 MW/cm2 and 11 MW/cm2, respectively. We have also discussed the effect of the beam divergence on the second harmonic conversion efficiency.

用炉温下降法生长出尺寸为φ20×60mm的AgGaSe2单晶体。在12mm长,切角为55°的AgGaSe2中,获得了TEACO2激光的倍频输出,其功率转换效率为1.12%。泵浦阈值和破坏阈值分别为3MW/cm2和11MW/cm2。还讨论了泵浦束的发散角对二次谐波转换效率的影响。

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。

 
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