14 May 2018 Propagation of infrared ultrashort pulses in the air
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The propagation of high peak-power beams in the atmosphere has been observed in field trials with visible-near infrared (VNIR). Longer infrared (IR) wavelengths beams have some propagation characteristics not tested in the VNIR field experiments. We identify some unique characteristics of IR ultrashort- ulse air propagation: greater transmission, much lower dispersion-induced chirp, lower sensitivity to atmospheric turbulence, and much larger critical power. We summarize the results of self-focusing theory applied to IR ultrashort pulse characteristics, apply the theory to predict the IR self-focusing distance, and show the theory is in close agreement with detailed numerical simulations including extinction and turbulence.
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Thomas J. Karr, Thomas J. Karr, Larry Stotts, Larry Stotts, Jason D. Schmidt, Jason D. Schmidt, Jason A. Tellez, Jason A. Tellez, Justin D. Mansell, Justin D. Mansell, } "Propagation of infrared ultrashort pulses in the air", Proc. SPIE 10684, Nonlinear Optics and its Applications 2018, 1068414 (14 May 2018); doi: 10.1117/12.2318224; https://doi.org/10.1117/12.2318224

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