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高压H2受激喇曼散射的阈值与能量转换效

郭奕理 丁海曙 姚敏言 娄采云 李港 周寿桓

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高压H2受激喇曼散射的阈值与能量转换效

郭奕理, 丁海曙, 姚敏言, 娄采云, 李港, 周寿桓

THRESHOLD AND ENERGY TRANSFER EFFICIENCY IN HIGH PRESSURE HYDROGEN SRS

GUO YI-LI, DING HAI-SHU, YAO MIN-YAN, LOU CAI-YUN, LI GANG, ZHOU SHOU-HUAN
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  • 我们着重研究了高压H2气Q(1)振动跃迁(4155cm-1)受激喇曼散射(SRS)中,参与非线性相互作用的几个参数(介质分子密度、跃迁线宽、泵浦光子密度以及非线性作用长度)对受激阈值与能量转换效率的影响。给出了自零到24atmH2气压范围内阈值随H2气压变化的实验结果,它与根据Dicke-Doppler展宽和碰撞展宽的联合效应的分析是一致的。讨论了由于受激喇曼过程(SRP)和四波混频参量过程(FWPP)共同影响下能量转换效率、压力-色散效应对高阶反斯托克斯的能量输出的重要影响。
    In this work, the influences of several parameters (molecular density of medium, transition linewidth, photon density of pump laser and nonlinear interaction length) on high pressure H2 stimulated Raman scattering (SRS) threshold and energy transfer efficiency are investigated. The experiments were carried out on a Q(1) line vibration transition (4155 cm-1) SRS. Results of effect of H2 pressure (0 to 24 atm) on the threshold are coincident with the analysis of the combined effect of Dicke-Doppler and collision broadening. The influences of stimulated Raman process (SRP) and four-wave parametric processes (FWPP) on energy transfer efficiency, as well as the role of pressure-dispersion effect on higher order anti-Stokes are also discussed.
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  • 文章访问数:  6040
  • PDF下载量:  467
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出版历程
  • 收稿日期:  1984-02-23
  • 刊出日期:  2005-05-10

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