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30 May 2022 Comparison of filamentation in near and long wave infrared
Owen Thome, Danielle Reyes, Jessica Pena, Haley Kerrigan, Robert Bernath, Martin Richardson
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Proceedings Volume PC12092, Laser Technology for Defense and Security XVII; PC120920J (2022) https://doi.org/10.1117/12.2626981
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States
Abstract
The majority of filamentation studies have focused on near infrared (NIR) filaments, which have been demonstrated to propagate over many times the Rayleigh range with clamped intensity, electron plasma density, and beam diameter. Long wavelength infrared (LWIR) laser light sources, however, have not been extensively studied for filamentation. Here, we discuss filamentation in both wavelength regimes and introduce a new ultrafast CO2 system capable of producing high-power 10 µm picosecond pulses. Future work is outlined which will significantly increase the output power of the CO2 laser for upcoming studies and allow direct comparison of NIR and LWIR filaments.
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Owen Thome, Danielle Reyes, Jessica Pena, Haley Kerrigan, Robert Bernath, and Martin Richardson "Comparison of filamentation in near and long wave infrared", Proc. SPIE PC12092, Laser Technology for Defense and Security XVII, PC120920J (30 May 2022); https://doi.org/10.1117/12.2626981
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KEYWORDS
Long wavelength infrared
Near infrared
Infrared radiation
Atmospheric propagation
Carbon dioxide lasers
Laser beam propagation
Light wave propagation
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