13 May 2016 High power free space optical link for rapid energy and data transmission
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Design and experimental data for a high power laser diode based free space point-to-point optical power/data link is presented. In time critical power up applications, such as providing power and guidance information to a munition shell just prior to deployment, energy of the order of 100 J needs to be transferred in under 10 s. Current inductive technology is slow and broadcasts a radio-frequency signal which is undesirable for stealth operation. Rapid energy transfer times require high irradiance levels at the surface of the photovoltaic cells, typically, exceeding 1000X suns. Through efficient thermal design of heat sinks, high optical to electrical power conversion efficiencies of 50%, which are usually attainable at low power levels of 1 W, are achievable at higher power levels.
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Harbans S. Dhadwal, Jahangir Rastegar, Dake Feng, Philip Kwok, "High power free space optical link for rapid energy and data transmission", Proc. SPIE 9837, Unmanned Systems Technology XVIII, 98370B (13 May 2016); doi: 10.1117/12.2222909; https://doi.org/10.1117/12.2222909


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