caa a22 4500 445367873 CHVBK 20180317142936.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s00340-010-4308-z doi (NATIONALLICENCE)springer-10.1007/s00340-010-4308-z Intensity fluctuations of partially coherent laser beam arrays inweak atmospheric turbulence [Elektronische Daten] [Ç. Arpali, S. Arpali, Y. Baykal, H. Eyyuboğlu] The intensity fluctuation of a partially coherent laser beam array is examined. For this purpose, the on-axis scintillation index at the receiver plane is analytically formulated via the extended Huygens-Fresnel diffraction integral in conditions of weak atmospheric turbulence. The effects of the propagation length, number of beamlets, radial distance, source size, wavelength of operation and coherence level on the scintillation index are investigated for a horizontal propagation path. It is found that, regardless of the number of beamlets, the scintillation index always rises with an increasing propagation length. If laser beam arrays become less coherent, the scintillation index begins to fall with growing source sizes. Given the same level of partial coherence, slightly less scintillations will occur when the radial distance of the beamlets from the origin is increased. At partial coherence levels, lower scintillations are observed for larger numbers of beamlets. Both for fully and partially coherent laser beam arrays, scintillations will drop on increasing wavelengths. Springer-Verlag, 2010 Arpali Ç. Electronic and Communication Engineering Department, Çankaya University, Öğretmenler Cad. No:14 Yüzüncüyıl, 06530, Balgat Ankara, Turkey aut Arpali S. Electronic and Communication Engineering Department, Çankaya University, Öğretmenler Cad. No:14 Yüzüncüyıl, 06530, Balgat Ankara, Turkey aut Baykal Y. Electronic and Communication Engineering Department, Çankaya University, Öğretmenler Cad. No:14 Yüzüncüyıl, 06530, Balgat Ankara, Turkey aut Eyyuboğlu H. Electronic and Communication Engineering Department, Çankaya University, Öğretmenler Cad. No:14 Yüzüncüyıl, 06530, Balgat Ankara, Turkey aut Applied Physics B Springer-Verlag 103/1(2011-04-01), 237-244 0946-2171 103:1<237 2011 103 340 https://doi.org/10.1007/s00340-010-4308-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00340-010-4308-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Arpali Ç. Electronic and Communication Engineering Department, Çankaya University, Öğretmenler Cad. No:14 Yüzüncüyıl, 06530, Balgat Ankara, Turkey aut NATIONALLICENCE 700 1- Arpali S. Electronic and Communication Engineering Department, Çankaya University, Öğretmenler Cad. No:14 Yüzüncüyıl, 06530, Balgat Ankara, Turkey aut NATIONALLICENCE 700 1- Baykal Y. Electronic and Communication Engineering Department, Çankaya University, Öğretmenler Cad. No:14 Yüzüncüyıl, 06530, Balgat Ankara, Turkey aut NATIONALLICENCE 700 1- Eyyuboğlu H. Electronic and Communication Engineering Department, Çankaya University, Öğretmenler Cad. No:14 Yüzüncüyıl, 06530, Balgat Ankara, Turkey aut NATIONALLICENCE 773 0- Applied Physics B Springer-Verlag 103/1(2011-04-01), 237-244 0946-2171 103:1<237 2011 103 340 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer