scholarly journals Propagation of a partially coherent Lorentz-Gauss beam through a paraxial ABCD optical system

2010 ◽  
Vol 18 (5) ◽  
pp. 4637 ◽  
Author(s):  
Guoquan Zhou
Keyword(s):  
Optical System ◽  
Gauss Beam ◽  
Partially Coherent ◽  
Abcd Optical System

scholarly journals Evolution of Spatiotemporal Intensity of Partially Coherent Pulsed Beams with Spatial Cosine-Gaussian and Temporal Laguerre–Gaussian Correlations in Still, Pure Water

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 102
Author(s):  
Chaoliang Ding ◽  
Olga Korotkova ◽  
Dmitri Horoshko ◽  
Zhiguo Zhao ◽  
Liuzhan Pan
Keyword(s):  
Optical System ◽  
Physical Interpretation ◽  
Dispersive Medium ◽  
Pure Water ◽  
Source Plane ◽  
Partially Coherent ◽  
New Family ◽  
Self Focusing ◽  
Abcd Optical System ◽  
Directed Energy

A new family of partially coherent pulsed beams with spatial cosine-Gaussian and temporal Laguerre–Gaussian correlations, named spatial cosine-Gaussian and temporal Laguerre–Gaussian correlated Schell-model (SCTLGSM) pulsed beams, is introduced. An analytic propagation formula is derived for the SCTLGSM pulsed beam through the spatiotemporal ABCD optical system characterizing a continuous dispersive medium. As an example, the evolution of spatiotemporal intensity of the SCTLGSM pulsed beam in a still, pure water column is then investigated. It is found that the SCTLGSM pulsed beams simultaneously exhibit spatiotemporal self-splitting and self-focusing phenomena, which can be attributed to the special spatial/temporal coherence structures and the presence of pulse chirper in the source plane. The physical interpretation of the obtained phenomena is given. The results obtained in this paper will be of interest in underwater optical technologies, e.g., directed energy and communications.

scholarly journals Research on the propagation of partially coherent cosh-Gaussian beams through an ABCD optical system in non-Kolmogorov turbulence by effective tensor approach

2021 ◽  
Vol 51 (1) ◽  
Author(s):  
Hongjie Ma ◽  
Jinsong Li ◽  
Yueyang Chen
Keyword(s):  
Optical System ◽  
Coherence Length ◽  
Spatial Coherence ◽  
Structure Constant ◽  
Beam Propagation ◽  
Gaussian Beams ◽  
Average Intensity ◽  
Partially Coherent ◽  
Kolmogorov Turbulence ◽  
Abcd Optical System

An efficient tensor approach is used to study the propagation of partially coherent cosh-Gaussian beams through an ABCD optical system in non-Kolmogorov turbulence. Analytical expressions for the average intensity of the beam propagation are derived. The properties of the average intensity are investigated with a numerical example. One finds that the propagation of the beam with larger spatial coherence length is less affected by distance when the propagation distance is long enough, and as the Ch-parameter increases, the beam propagation is less effected by turbulent atmosphere. It is also found that the average intensity distribution of the cosh-Gaussian beams with larger spatial correlation length is more affected by the structure constant of turbulence (i.e., turbulence level). By choosing a suitable Ch-parameter and spatial coherence length, the partially coherent cosh-Gaussian beams can be better transmitted in non-Kolmogorov turbulence. Our results will be useful in free-space communication.

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