Investigation of Coherent and Incoherent Laser Beams Propagation Through Turbulent Atmosphere | Zendy

Sogol Tadayyoni | Zendy; Mahdi Shayganmanesh | Zendy

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Investigation of Coherent and Incoherent Laser Beams Propagation Through Turbulent Atmosphere

Author(s) -

Sogol Tadayyoni,

Mahdi Shayganmanesh

Publication year - 2019

Publication title -

international journal of optics and photonics

Language(s) - English

Resource type - Journals

eISSN - 2538-4007

pISSN - 1735-8590

DOI - 10.29252/ijop.13.2.145

Subject(s) - laser beam quality , optics , coherence (philosophical gambling strategy) , beam (structure) , laser , physics , turbulence , beam parameter product , m squared , laser beams , coherence length , atmosphere (unit) , beam diameter , computational physics , mechanics , meteorology , quantum mechanics , superconductivity

In this paper propagation of combined laser beam through atmosphere is investigated. Laser beam is combined via lens array arrangement. Turbulence is considered as an affecting factor of atmosphere and its effects on transverse coherence length (Fried parameter), peak intensity, propagation efficiency, and spot size of the laser beam is investigated. Coherent and incoherent combined beam are compared. It was seen that irrespective of laser beam quality in weak and medium turbulence levels, propagation efficiency parameter in coherent and incoherent beam combining has almost the same values. Therefore replacing incoherent beam combination with coherent is proposed.

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