Long range robust multi-terawatt MWIR and LWIR atmospheric light bullets
AffiliationUniv Arizona, Coll Opt Sci
Univ Arizona, Dept Math
MetadataShow full item record
PublisherSPIE-INT SOC OPTICAL ENGINEERING
CitationJerome V. Moloney, Kolja Schuh, Paris Panagiotopoulos, M. Kolesik, S. W. Koch, "Long range robust multi-terawatt MWIR and LWIR atmospheric light bullets", Proc. SPIE 10193, Ultrafast Bandgap Photonics II, 101930K (8 May 2017); doi: 10.1117/12.2262142; http://dx.doi.org/10.1117/12.2262142
JournalULTRAFAST BANDGAP PHOTONICS II
Rights© 2017 SPIE.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractThere is a strong push worldwide to develop multi-Joule femtosecond duration laser pulses at wavelengths around 3.5-4 and 9-11 mu m within important atmospheric transmission windows. We have shown that pulses with a 4 mu m central wavelength are capable of delivering multi-TW powers at km range. This is in stark contrast to pulses at near-IR wavelengths which break up into hundreds of filaments with each carrying around 5 GW of power per filament over meter distances. We will show that nonlinear envelope propagators fail to capture the true physics. Instead a new optical carrier shock singularity emerges that can act to limit peak intensities below the ionization threshold leading to low loss long range propagation. At LWIR wavelengths many-body correlations of weakly-ionized electrons further suppress the Kerr focusing nonlinearity around 10 mu m and enable whole beam self-trapping without filaments.
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