Atmospheric Laser Communication

Fischer, Kenneth W.; Witiw, Michael; Baars, J. A.; Oke, T. R.

doi:10.1175/bams-85-5-725

Cited by 19 publications

(16 citation statements)

References 16 publications

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“…The long-lived guiding structures demonstrated here could be used as an effective collection lens, enhancing the signal. They may also find use in atmospheric laser communication [16]. In addition, they might be used to enhance and control the propagation of an injected ultrashort filamenting pulse [17], similar to what has been done with a permanent refractive index structure in glass [18] and recently with the plasma from an array of filaments in air [19].…”

Section: Introductionmentioning

confidence: 96%

Demonstration of Long-Lived High-Power Optical Waveguides in Air

et al. 2014

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We demonstrate that femtosecond filaments can set up an extended and robust thermal waveguide structure in air with a lifetime of several milliseconds, making possible the very-long-range guiding and distant projection of high-energy laser pulses and high-average power beams. As a proof of principle, we demonstrate guiding of 110-mJ, 7-ns, 532-nm pulses with 90% throughput over ∼15 Rayleigh lengths in a 70-cm-long air waveguide generated by the long time-scale thermal relaxation of an array of femtosecond filaments. The guided pulse was limited only by our available laser energy. In general, these waveguides should be robust against the effects of thermal blooming of extremely high-average-power laser beams.

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Section: Introductionmentioning

confidence: 96%

Demonstration of Long-Lived High-Power Optical Waveguides in Air

et al. 2014

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“…8 Table 2.4: Equation 2.2 variable definitions [3]. 8 Table 2.5: Attenuation for different visual range conditions [1]. 9 Table 2.6: The pros and cons of an FSOSW.…”

Section: List Of Tablesmentioning

confidence: 99%

“…This type of scattering happens primarily due to mist and fog in the air. It should be noted that, in general, a large number of small particles is more detrimental to an FSO link than a smaller number of large particles [1].…”

Section: Scatteringmentioning

confidence: 99%

“…For FSO links under a few few hundred meters, the effect of scintillation is relatively small compared to the attenuation effects of atom, molecule, and aerosol absorption and scattering [1]. Note the overview of the transmission concerns of FSO communication in Figure 2.3.…”

Section: Scintillationmentioning

confidence: 99%

“…By offering designers a tool to run physical tests while using a simulated weapon, design costs may be reduced, minimize testing collateral, and offer real life proof of accurate operation. which used a reflected beam of sunlight [1]. Despite its long history, FSO communication is still an area of continuing research.…”

Section: Introductionmentioning

confidence: 99%

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Modular Laser Combat System for Remotely Operated Vehicles: Bridging the Gap Between Computer Simulation and Live Fire

Fulenwider¹

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Modular Laser Combat System for Remotely Operated Vehicles:Bridging the Gap Between Computer Simulation and Live Fire Thomas Edward FulenwiderIn the emerging industry of small unmanned vehicles, pioneered by small businesses and research institutions, a suitable combat system test platform is needed.Computer simulations are useful, but do not provide the definitive proof of effective operation necessary for deployment of a combat system. What is needed is an affordable simulated weapons system that enables live flight testing without the used of live weaponry.A framework is developed here for the construction of a simulated weapon using Free Space Optical (FSO) infrared communication. It is developed in such a way to ensure compatibility with a variety of platforms including ground and aerial vehicles, so that identical but configurable modules can be used on any vehicle that is to take place in a live combat simulation. A proof-of-concept implementation of this modular laser combat system framework is also presented and tested. The implemented system shows the value of such a simulated weapons system and future areas of improvement are also explored.

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Extreme Climate Control Membrane Structures

Cathcart¹,

Ćirković

Macro-Engineering

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Atmospheric Laser Communication

Abstract: With the help of meteorologists, atmospheric laser communication within cities is becoming more reliable and more widely used.

Cited by 19 publications

References 16 publications

Demonstration of Long-Lived High-Power Optical Waveguides in Air

Demonstration of Long-Lived High-Power Optical Waveguides in Air

Modular Laser Combat System for Remotely Operated Vehicles: Bridging the Gap Between Computer Simulation and Live Fire

Extreme Climate Control Membrane Structures

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