DETERMINATION OF THE LONGITUDINAL PROFILE OF A FOCUSED NDYAG GAUSSIAN-BEAM FROM 2ND-HARMONIC GENERATION IN A THIN KTP CRYSTAL

被引：10

作者：

FEVE, JP

BOULANGER, B

MARNIER, G

机构：

[1] Laboratoire de Structures, Unite de Recherche Associde 809, Centre National de la Recherche Scientifique, Université de Nancy I, Facultes de Sciences, B.P. 239

来源：

APPLIED OPTICS | 1994年 / 33卷 / 15期

关键词：

D O I：

10.1364/AO.33.003169

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present an original experiment describing a focused Gaussian laser beam by using second-harmonic generation (SHG) in a thin strip of a nonlinear optical material, in this case KTP doubling of an Nd:YAG laser at 1.064 mum. The dependence of the SHG efficiency on the fundamental beam radius allows the determination of beam parameters by harmonic-power measurements. The characterization of a telescope shows the good precision of this method in radii in the range of 10-100 mum. The average accuracy is 4% for the radius determination and 1.5% for the beam-waist localization.

引用

页码：3169 / 3174

页数：6

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