Estimation of the Turbulence and Regular Refraction Effects on Laser Beam Parameters in the Atmospheric Boundary Layer: Part 1, Coherence Length and Turbulent Broadening

The coherence length and the degree of broadening of a laser beam under the turbulence effect are estimated from the results of remote acoustic sounding of the atmospheric boundary layer with a Volna-4M sodar. The daily average profile of the coherence length in different seasons is considered. Corrections to the effective radius of a laser beam due to turbulence and the monthly average values of these corrections are calculated. A noticeable excess of the possible broadening of the laser beam in winter above that in summer was found.

[1]  R. Riddle,et al.  Using a Sodar to Measure Optical Turbulence and Wind Speed for the Thirty Meter Telescope Site Testing. Part II: Comparison with Independent Instruments , 2011 .

[2]  S. V. Asanov,et al.  Forecast of intense near- and mid-IR laser radiation propagation along slant atmospheric paths , 2016 .

[3]  I. Razenkov.  Turbulent Lidar: I−Design , 2018 .

[4]  S. Argentini,et al.  Some Statistics of the Temperature Structure Parameter in the Convective Boundary Layer Observed by Sodar , 2014, Boundary-Layer Meteorology.

[5]  Vladimir P. Lukin,et al.  Adaptive optics system for solar telescope operating under strong atmospheric turbulence , 2017 .

[6]  Detlev Sprung,et al.  Stability and height dependant variations of the structure function parameters in the lower atmospheric boundary layer investigated from measurements of the long-term experiment VERTURM (vertical turbulence measurements) , 2011, Remote Sensing.

[7]  Detlev Sprung,et al.  Investigation of seasonal and diurnal cycles on the height dependence of optical turbulence in the lower atmospheric boundary layer , 2012, Optics & Photonics - Optical Engineering + Applications.

[8]  S. L. Odintsov,et al.  Experimental estimates of the structure parameter of the refractive index for optical waves in the surface air layer , 2015 .

[9]  S. L. Odintsov,et al.  Results of Acoustic Diagnostics of Atmospheric Boundary Layer in Estimation of the Turbulence Effect on Laser Beam Parameters , 2018, Atmospheric and Oceanic Optics.

[10]  I. Razenkov.  Turbulent Lidar: II−Experiment , 2018 .

[11]  S. L. Odintsov,et al.  Estimates of the Refractive Index and Regular Refraction of Optical Waves in the Atmospheric Boundary Layer: Part 1, Refractive Index , 2018, Atmospheric and Oceanic Optics.

[12]  S. L. Odintsov,et al.  Estimates of the Refractive Index and Regular Refraction of Optical Waves in the Atmospheric Boundary Layer: Part 2, Laser Beam Refraction , 2018, Atmospheric and Oceanic Optics.

[13]  R. Riddle,et al.  Using a Sodar to Measure Optical Turbulence and Wind Speed for the Thirty Meter Telescope Site Testing. Part I: Reproducibility , 2011 .

[14]  Phillip B. Chilson,et al.  Measurements of the Temperature Structure-Function Parameters with a Small Unmanned Aerial System Compared with a Sodar , 2015, Boundary-Layer Meteorology.

[15]  Phillip B. Chilson,et al.  Methods for Evaluating the Temperature Structure-Function Parameter Using Unmanned Aerial Systems and Large-Eddy Simulation , 2015, Boundary-Layer Meteorology.