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DIRECTED
ENERGY
PROFESSIONAL
SOCIETY
Abstract: 25-Symp-052
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UNCLASSIFIED, PUBLIC RELEASE
Wavelength-dependence of ultrashort-pulse-laser self-focusing in a turbulent atmosphere
Ultrashort-pulse-lasers (USPLs) can drive a host of nonlinear processes that can enable a myriad of optical applications, such as tailored material interactions and the production of broadband radiation. With sufficient power, USPLs can nonlinearly polarize the background medium and self-focus, allowing the pulse to reach and maintain a high intensity without relying on the external focusing of a lens. In laboratory experiments, characteristic self-focusing features such as the collapse distance can be precisely tuned by adjusting laser parameters. However, in long-range atmospheric propagation, turbulence seeds phase perturbations of the laser pulse which modifies self-focusing and significantly increases variation of the laser intensity and self-focusing collapse distance. Here we will present theory and simulations demonstrating the impact of laser wavelength on the self-focusing collapse distribution in a turbulent atmosphere.
UNCLASSIFIED, PUBLIC RELEASE
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