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An acousto-optical sensor with high angular resolution.

Kaloshin G, Lukin I - Sensors (Basel) (2012)

Bottom Line: The paper introduces a new laser interferometry-based sensor for diagnosis of random media by means of high accuracy angle measurements and describes the results of its development and testing.Theoretical calculations of the dependence of the range of the laser interferometer on laser beam parameters, device geometry, and atmospheric turbulence characteristics are reported.It is demonstrated that at moderate turbulence intensities corresponding to those observed most frequently in turbulent atmosphere at moderate latitudes and with low interference contrast values, the performance range of the laser interferometer-based device exceeds 5 km.

View Article: PubMed Central - PubMed

Affiliation: VE Zuev Institute of Atmospheric Optics SB RAS, Tomsk, Russia. gkaloshin@iao.ru

ABSTRACT
The paper introduces a new laser interferometry-based sensor for diagnosis of random media by means of high accuracy angle measurements and describes the results of its development and testing. Theoretical calculations of the dependence of the range of the laser interferometer on laser beam parameters, device geometry, and atmospheric turbulence characteristics are reported. It is demonstrated that at moderate turbulence intensities corresponding to those observed most frequently in turbulent atmosphere at moderate latitudes and with low interference contrast values, the performance range of the laser interferometer-based device exceeds 5 km.

No MeSH data available.


Related in: MedlinePlus

Laser beam range as a function of the structural parameter of atmospheric turbulence at radiation wavelength λ = 1.06 μm and interference pattern visibility v(x) = 0.1 (a), 0.3 (b) and 0.5 (c) for different distances between the beam centers ρtr = 0.01 (1), 0.02 (2), 0.03 (3), 0.04 (4), and 0.05 m (5).
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f3-sensors-12-03739: Laser beam range as a function of the structural parameter of atmospheric turbulence at radiation wavelength λ = 1.06 μm and interference pattern visibility v(x) = 0.1 (a), 0.3 (b) and 0.5 (c) for different distances between the beam centers ρtr = 0.01 (1), 0.02 (2), 0.03 (3), 0.04 (4), and 0.05 m (5).

Mentions: Equation (10) has been solved by the simple iterations method. Results of the estimates of the range of action of a LS are presented in Figure 3 for all values of the structural parameter of air permittivity fluctuations, valid for the near-water atmospheric layer [7,8], and for three values of interference pattern visibility and optical radiation wavelength λ = 1.06 μm. It is assumed that the laser radiation propagated along a horizontal path at the height of 10…20 m above the water surface.


An acousto-optical sensor with high angular resolution.

Kaloshin G, Lukin I - Sensors (Basel) (2012)

Laser beam range as a function of the structural parameter of atmospheric turbulence at radiation wavelength λ = 1.06 μm and interference pattern visibility v(x) = 0.1 (a), 0.3 (b) and 0.5 (c) for different distances between the beam centers ρtr = 0.01 (1), 0.02 (2), 0.03 (3), 0.04 (4), and 0.05 m (5).
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3376619&req=5

f3-sensors-12-03739: Laser beam range as a function of the structural parameter of atmospheric turbulence at radiation wavelength λ = 1.06 μm and interference pattern visibility v(x) = 0.1 (a), 0.3 (b) and 0.5 (c) for different distances between the beam centers ρtr = 0.01 (1), 0.02 (2), 0.03 (3), 0.04 (4), and 0.05 m (5).
Mentions: Equation (10) has been solved by the simple iterations method. Results of the estimates of the range of action of a LS are presented in Figure 3 for all values of the structural parameter of air permittivity fluctuations, valid for the near-water atmospheric layer [7,8], and for three values of interference pattern visibility and optical radiation wavelength λ = 1.06 μm. It is assumed that the laser radiation propagated along a horizontal path at the height of 10…20 m above the water surface.

Bottom Line: The paper introduces a new laser interferometry-based sensor for diagnosis of random media by means of high accuracy angle measurements and describes the results of its development and testing.Theoretical calculations of the dependence of the range of the laser interferometer on laser beam parameters, device geometry, and atmospheric turbulence characteristics are reported.It is demonstrated that at moderate turbulence intensities corresponding to those observed most frequently in turbulent atmosphere at moderate latitudes and with low interference contrast values, the performance range of the laser interferometer-based device exceeds 5 km.

View Article: PubMed Central - PubMed

Affiliation: VE Zuev Institute of Atmospheric Optics SB RAS, Tomsk, Russia. gkaloshin@iao.ru

ABSTRACT
The paper introduces a new laser interferometry-based sensor for diagnosis of random media by means of high accuracy angle measurements and describes the results of its development and testing. Theoretical calculations of the dependence of the range of the laser interferometer on laser beam parameters, device geometry, and atmospheric turbulence characteristics are reported. It is demonstrated that at moderate turbulence intensities corresponding to those observed most frequently in turbulent atmosphere at moderate latitudes and with low interference contrast values, the performance range of the laser interferometer-based device exceeds 5 km.

No MeSH data available.


Related in: MedlinePlus