Non-Kolmogorov spectrum scintillation aspects of dark hollow and flat topped beams |
| |
| Authors: | Halil T Eyyubo?lu Yangjian Cai |
| |
| Institution: | 1. Department of Electronic and Communication Engineering, Çankaya University, Eski?ehir Yolu 19 km, Ankara, Turkey;2. School of Physical Science and Technology, Soochow University, Suzhou 215006, China;1. School of Physical Science and Technology, Soochow University, Suzhou 215006, China;2. Department of Physics and Information Engineering, Huaihua University, Huaihua 418008, China;1. School of Electronic Engineering Beijing University of Posts and Telecommunications, Beijing 100876, China;2. School of Electronic and Information Engineering, Beihang University, Beijing 100191, China;3. CREAM Group, State Key Laboratory of Advanced Optical Communication Systems and Networks (Peking University) and Institute of Quantum Electronics, School of Electronics Engineering and Computer Science, Peking University, Beijing, 100871, China;1. College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China;2. Department of Physics Luoyang Normal University, Luoyang 471022, China;1. Department of Physics and Information Engineering, Huaihua University, Huaihua 418008, China;2. School of Physical Science and Technology, Soochow University, Suzhou 215006, China;3. School of Sciences, Zhejiang Agriculture and Forestry University, Lin’an 311300, China |
| |
| Abstract: | The scintillation aspects of dark hollow (DH) and flat topped (FT) beams propagating in the turbulent atmosphere containing the non-Kolmogorov power spectrum are investigated. It is found that low scintillations will occur when the exponent of the power spectrum is just above the numeric value of 3. Initially, the rises in scintillations will take place as the exponent becomes larger, but later the scintillation reductions will be experienced as the exponent grows further, eventually minimum scintillations will be seen when the exponent has reached the value of 4. This will be the case, for scintillation variations against propagation distance, source size, wavelength, inner and outer scales of turbulence. Furthermore, it is found that at the small source sizes, DH beams will offer less scintillation than FT beams, while at the large source sizes, the reverse will be applicable. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
