INFLUENCE OF THERMAL TURBULENCE IN A CONVECTIVE ASCENDING STREAM ON PHASE FLUCTUATIONS OF A LASER BEAM

被引：11

作者：

BERTOLOTTI, M

CARNEVALE, M

CROSIGNANI, B

DIPORTO, P

机构：

[1] Istituto di Fisica della Facoltà di Ingegneria, Università di Roma, Città Universitaria, Roma

[2] Fondazione U. Bordoni, Istituto Superiore P. T., Roma

来源：

APPLIED OPTICS | 1969年 / 8卷 / 06期

关键词：

D O I：

10.1364/AO.8.001111

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The effects of thermal turbulence on the phase fluctuations of a laser beam are investigated in laboratory. The turbulent region created by means of a horizontal heated Nichrome grid is made to shift upwards owing to the convective motion. A Mach-Zehnder interference experiment is performed in which two beams from a laser source are superimposed after crossing the turbulent region. The displacements of the fringe pattern allow one to study the temporal decay of the mean square refractive index fluctuation. An interpretation of the results is given on the basis of the theory of an isotropic turbulent scalar field. © 1969 Optical Society of America.

引用

页码：1111 / +

页数：1

共 7 条

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