Exploration of multiple wavelength laser beams propagating underwater

Michael Kelly; Svetlana Avramov-Zamurovic; Charles Nelson

doi:10.1117/12.2314746

25 May 2018 Exploration of multiple wavelength laser beams propagating underwater

Michael Kelly, Svetlana Avramov-Zamurovic, Charles Nelson

Proceedings Volume 10631, Ocean Sensing and Monitoring X; 1063118 (2018) https://doi.org/10.1117/12.2314746
Event: SPIE Defense + Security, 2018, Orlando, FL, United States

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.

Citation Download Citation

Michael Kelly, Svetlana Avramov-Zamurovic, and Charles Nelson "Exploration of multiple wavelength laser beams propagating underwater", Proc. SPIE 10631, Ocean Sensing and Monitoring X, 1063118 (25 May 2018); https://doi.org/10.1117/12.2314746

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