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Updated: Mar 17, 2026

$Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing$

Femtosecond Laser Filaments for Use in Sub-Diffraction-Limited Imaging and Remote Sensing

Published on: April 25, 2019

Light self-focusing in the atmosphere: thin window model.

Irina A Vaseva¹, Mikhail P Fedoruk^1,2, Alexander M Rubenchik³

¹Institute of Computational Technologies, Siberian Branch of the Russian Academy of Sciences, 6 Ac. Lavrentjev Avenue, Novosibirsk, 630090, Russia.

Scientific Reports

|August 3, 2016

Summary

Ultra-high power laser beams can clean space debris. For thin atmospheres, these beams primarily cause phase distortion, manageable with adaptive optics, potentially aiding laser material processing.

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Area of Science:

Physics
Optics
Aerospace Engineering

Background:

Ultra-high power laser beams, exceeding the self-focusing threshold significantly, are being considered for space debris removal.
Atmospheric propagation of these intense beams presents unique phenomena distinct from conventional self-focusing.

Purpose of the Study:

To investigate the atmospheric propagation characteristics of ultra-high power laser beams relevant to space applications.
To determine the impact of atmospheric thickness on laser beam self-focusing and distortion.

Main Methods:

Theoretical analysis of laser beam propagation through a thin atmospheric layer.
Modeling the lowest order effects of atmospheric interaction on ultra-high power beams.

Main Results:

For atmospheric thicknesses much shorter than the focal length (orbit scale), ultra-high power laser beams primarily induce phase distortion.
Self-focusing effects are minimal in this 'thin window' regime, with phase distortion being the dominant outcome.

Conclusions:

The 'thin window' model demonstrates that atmospheric self-focusing can be mitigated for ultra-high power laser beams using adaptive optics.
This understanding has implications for space debris mitigation strategies and advanced applications like femtosecond laser material processing.