Reduction of laser intensity scintillations in turbulent atmospheres using time averaging of a partially coherent beam

被引：10

作者：

Berman, G. P. ^{[1
]}

Bishop, A. R. ^{[2
]}

Chernobrod, B. M. ^{[1
]}

Gorshkov, V. N. ^{[1
,3
,4
]}

Lizon, D. C.

Moody, D. I.

Nguyen, D. C.

Torous, S. V. ^{[3
]}

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[2] Los Alamos Natl Lab, Theory Simulat & Computat Directorate, Los Alamos, NM 87545 USA

[3] Natl Tech Univ Ukraine KPI, UA-03056 Kiev 56, Ukraine

[4] Natl Acad Sci Ukraine, Inst Phys, UA-680028 Kiev, Ukraine

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2009年 / 42卷 / 22期

关键词：

SPACE OPTICAL COMMUNICATIONS; DIFFERENT WAVELENGTHS; RANDOM-MEDIA; COMMUNICATION; PROPAGATION; MODEL;

D O I：

10.1088/0953-4075/42/22/225403

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate experimentally and numerically that the application of a partially coherent beam (PCB) in combination with time averaging leads to a significant reduction in the scintillation index. We use a simplified experimental approach in which the atmospheric turbulence is simulated by a phase diffuser. The role of the speckle size, the amplitude of the phase modulation and the strength of the atmospheric turbulence are examined. We obtain good agreement between our numerical simulations and our experimental results. This study provides a useful foundation for future applications of PCB-based methods of scintillation reduction in physical atmospheres.

引用

页数：11

共 15 条

[1] Andrews L C, 2001, Laser beam scintillation with applicationsM
[2] Free-space laser communication model
Belen'kii, MS
Hughes, K
Rye, V
[J]. ACTIVE AND PASSIVE OPTICAL COMPONENTS FOR WDM COMMUNICATIONS IV, 2004, 5595 : 167 - 184
[3] Suppression of intensity fluctuations in free space high-speed optical communication based on spectral encoding of a partially coherent beam
Berman, Gennady P.
Bishop, Alan R.
Chernobrod, Boris M.
Nguyen, Dinh C.
Gorshkov, Vyacheslav N.
[J]. OPTICS COMMUNICATIONS, 2007, 280 (02) : 264 - 270
[4] Spreading of partially coherent beams in random media
Gbur, G
Wolf, E
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2002, 19 (08): : 1592 - 1598
[5] Diffraction and self-restoration of a severe screened vortex beam
Gorshkov, VN
Kononenko, AN
Soskin, MS
[J]. SECOND INTERNATIONAL CONFERENCE ON SINGULAR OPTICS (OPTICAL VORTICES): FUNDAMENTALS AND APPLICATIONS, 2001, 4403 : 127 - 137
[6] Turbulence-induced quality degradation of partially coherent beams
Ji, XL
Lü, B
[J]. OPTICS COMMUNICATIONS, 2005, 251 (4-6) : 231 - 236
[7] Model for a partially coherent Gaussian beam in atmospheric turbulence with application in Lasercom
Korotkova, O
Andrews, LC
Phillips, RL
[J]. OPTICAL ENGINEERING, 2004, 43 (02) : 330 - 341
[8] Free-space optical communications: Opportunities and challenges, a carrier's perspective
Pan, J
Evans, M
Euler, T
Johnson, H
DeNap, F
[J]. APOC 2002: ASIA-PACIFIC OPTICAL AND WIRELESS COMMUNICATIONS; WIRELESS AND MOBILE COMMUNICATIONS II, 2002, 4911 : 58 - 72
[9] Scintillation reduction by use of multiple Gaussian laser beams with different wavelengths
Peleg, Avner
Moloney, Jerome V.
[J]. IEEE PHOTONICS TECHNOLOGY LETTERS, 2007, 19 (9-12) : 883 - 885
[10] Scintillation index for two Gaussian laser beams with different wavelengths in weak atmospheric turbulence
Peleg, Avner
Moloney, Jerome V.
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2006, 23 (12) : 3114 - 3122

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