25 May 2018 Exploration of multiple wavelength laser beams propagating underwater
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Abstract
Laser beams propagating through complex media commonly experience degradation. This experiment investigates the effects of using laser beams with different wavelengths propagating along the same path as a method of mitigating distortion. We recorded intensity measurements of both a red and green laser after passing through a temperature and flow controlled underwater path and explored the effects of wavelength diversity on laser scintillation. Specifically, temperature variations were induced in a 243cm long water tank, containing 500 liters of deionized water using three heating sources. Experiments were performed with a triple pass through the tank for a total propagation length of 980cm. The final experimentation yielded repeatable and significant reductions in the scintillation of the multiple wavelength beam compared to its individual component beams.
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Michael Kelly, Michael Kelly, Svetlana Avramov-Zamurovic, Svetlana Avramov-Zamurovic, Charles Nelson, Charles Nelson, } "Exploration of multiple wavelength laser beams propagating underwater", Proc. SPIE 10631, Ocean Sensing and Monitoring X, 1063118 (25 May 2018); doi: 10.1117/12.2314746; https://doi.org/10.1117/12.2314746
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