Average spreading of rectangular elliptical Gaussian beam array propagating in non-Kolmogorov turbulence

Abstract

The spreading properties of the rectangular elliptical Gaussian beam (EGB) array propagating in nonKolmogorov turbulence are investigated by using the derived analytical expression for the root-mean-square (rms) beam width. The results indicate that the rms beam width of the EGB array is smaller than that of the circular Gaussian beam array for long-distance propagation. The optimum separation distances are proved to exist and have a strong dependence on the ratio of the waist width along the long axis to that along the short axis of the EGB. Further, the rms beam width in non-Kolmogorov turbulence is different from that in Kolmogorov turbulence.

Scintillation optimization of linear Gaussian beam array propagating through weak turbulence

“…intensity fluctuations) and beam wander [1,2]. A laser beam array is an important choice for a high-power system [3][4][5][6], so propagation properties of laser beam arrays are studied theoretically and experimentally [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]. In detail, average spreading and beam quality of linear beam array [7,8], radial beam array [9][10][11][12], rectangular elliptical beam array [13] through turbulent atmosphere are studied, where all the beams of the arrays are arranged at equal intervals.…”