Abstract
Measurements of partially spatially coherent infra-red laser beam intensity fluctuations propagating through a hot-air turbulence emulator are compared with visible laser beam intensity fluctuations in the maritime and IR laser beam intensity fluctuations in the terrestrial environment at the United States Naval Academy. The emulator used in the laboratory for the comparison is capable of generating controlled optical clear air turbulence ranging from weak to strong scintillation. Control of the degree of spatial coherence of the propagating laser beam was accomplished using both infrared and visible spatial light modulators. Specific statistical analysis compares the probability density and temporal autocovariance functions, and fade statistics of the propagating laser beam between the in-laboratory emulation and the maritime field experiment. Additionally, the scintillation index across varying degrees of spatial coherence is compared for both the maritime and terrestrial field experiments as well as the in-laboratory emulation. The possibility of a scintillation index 'sweet' spot is explored.
| Original language | English (US) |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 8610 |
| DOIs | |
| State | Published - 2013 |
| Event | Free-Space Laser Communication and Atmospheric Propagation XXV - San Francisco, CA, United States Duration: Feb 5 2013 → Feb 7 2013 |
Other
| Other | Free-Space Laser Communication and Atmospheric Propagation XXV |
|---|---|
| Country | United States |
| City | San Francisco, CA |
| Period | 2/5/13 → 2/7/13 |
Fingerprint
Keywords
- atmospheric turbulence
- Free-space optical communications
- hot-air turbulence emulator
- maritime
- partial spatial coherence
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Measurements of partially spatially coherent laser beam intensity fluctuations propagating through a hot-air turbulence emulator and comparison with both terrestrial and maritime environments. / Nelson, C.; Avramov-Zamurovic, S.; Korotkova, Olga; Malek-Madani, R.; Sova, R.; Davidson, Frederic.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 8610 2013. 86100T.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Measurements of partially spatially coherent laser beam intensity fluctuations propagating through a hot-air turbulence emulator and comparison with both terrestrial and maritime environments
AU - Nelson, C.
AU - Avramov-Zamurovic, S.
AU - Korotkova, Olga
AU - Malek-Madani, R.
AU - Sova, R.
AU - Davidson, Frederic
PY - 2013
Y1 - 2013
N2 - Measurements of partially spatially coherent infra-red laser beam intensity fluctuations propagating through a hot-air turbulence emulator are compared with visible laser beam intensity fluctuations in the maritime and IR laser beam intensity fluctuations in the terrestrial environment at the United States Naval Academy. The emulator used in the laboratory for the comparison is capable of generating controlled optical clear air turbulence ranging from weak to strong scintillation. Control of the degree of spatial coherence of the propagating laser beam was accomplished using both infrared and visible spatial light modulators. Specific statistical analysis compares the probability density and temporal autocovariance functions, and fade statistics of the propagating laser beam between the in-laboratory emulation and the maritime field experiment. Additionally, the scintillation index across varying degrees of spatial coherence is compared for both the maritime and terrestrial field experiments as well as the in-laboratory emulation. The possibility of a scintillation index 'sweet' spot is explored.
AB - Measurements of partially spatially coherent infra-red laser beam intensity fluctuations propagating through a hot-air turbulence emulator are compared with visible laser beam intensity fluctuations in the maritime and IR laser beam intensity fluctuations in the terrestrial environment at the United States Naval Academy. The emulator used in the laboratory for the comparison is capable of generating controlled optical clear air turbulence ranging from weak to strong scintillation. Control of the degree of spatial coherence of the propagating laser beam was accomplished using both infrared and visible spatial light modulators. Specific statistical analysis compares the probability density and temporal autocovariance functions, and fade statistics of the propagating laser beam between the in-laboratory emulation and the maritime field experiment. Additionally, the scintillation index across varying degrees of spatial coherence is compared for both the maritime and terrestrial field experiments as well as the in-laboratory emulation. The possibility of a scintillation index 'sweet' spot is explored.
KW - atmospheric turbulence
KW - Free-space optical communications
KW - hot-air turbulence emulator
KW - maritime
KW - partial spatial coherence
UR - http://www.scopus.com/inward/record.url?scp=84878179177&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84878179177&partnerID=8YFLogxK
U2 - 10.1117/12.2003307
DO - 10.1117/12.2003307
M3 - Conference contribution
AN - SCOPUS:84878179177
SN - 9780819493798
VL - 8610
BT - Proceedings of SPIE - The International Society for Optical Engineering
ER -