1969
DOI: 10.1364/ao.8.001111
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Influence of Thermal Turbulence in a Convective Ascending Stream on Phase Fluctuations of a Laser Beam

Abstract: 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 … Show more

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Cited by 12 publications
(3 citation statements)
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“…As can be seen in these plots, the generated turbulence exhibits the properties of locally isotropic turbulence at all locations within the aperture; thus, the generated voltage is 50 volts; there is one screen in the chamber; the average temperature is 42. C. [4][5][6][7][8][9] turbulence appears to be isotropic. Note also on these plots that the magnitude oftb.…”
Section: Isotropymentioning
confidence: 99%
“…As can be seen in these plots, the generated turbulence exhibits the properties of locally isotropic turbulence at all locations within the aperture; thus, the generated voltage is 50 volts; there is one screen in the chamber; the average temperature is 42. C. [4][5][6][7][8][9] turbulence appears to be isotropic. Note also on these plots that the magnitude oftb.…”
Section: Isotropymentioning
confidence: 99%
“…In this system, a fluid layer is heated from below and cooled from above. However in some studies the turbulent medium is only heated from below [12][13][14][15][16][17][18][19][20]. The effects of convective turbulence have been studied on the propagation of a light beam through convective air turbulence [12][13][14][15][16][17][18][19][20] and underwater [21][22][23][24][25][26][27][28].…”
Section: Introductionmentioning
confidence: 99%
“…However in some studies the turbulent medium is only heated from below [12][13][14][15][16][17][18][19][20]. The effects of convective turbulence have been studied on the propagation of a light beam through convective air turbulence [12][13][14][15][16][17][18][19][20] and underwater [21][22][23][24][25][26][27][28]. Bissonnette [21] and Gurvich et al [22] were among the pioneers in the studying of the optical properties of underwater convective turbulence.…”
Section: Introductionmentioning
confidence: 99%