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Title: Interaction of doughnut-shaped laser pulses with glasses

Non-Gaussian laser beams can open new opportunities for microfabrication, including ultrashort laser direct writing. By using a model based on Maxwell’s equations, we investigate the dynamics of doughnut-shaped laser beams focused inside fused silica glass, in comparison with Gaussian pulses of the same energy. The laser propagation dynamics reveals intriguing features of beam splitting and sudden collapse toward the beam axis, overcoming the intensity clamping effect. The resulting structure of light absorption represents a very hot, hollow nanocylinder, which can lead to an implosion process that brings matter to extreme thermodynamic states. Furthermore, by monitoring the simulations of the laser beam scattering we see a considerable difference in both the blueshift and the angular distribution of scattered light for different laser energies, suggesting that investigations of the spectra of scattered radiation can be used as a diagnostic of laser-produced electron plasmas in transparent materials.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Novosibirsk State Univ., Inst. of Computational Technologies, and Novosibirsk State Technical Univ., Novosibirsk (Russian Federation)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Novosibirsk State Univ. and Inst. of Computational Technologies, Novosibirsk (Russian Federation)
  4. HiLASE Centre, Dolni Brezany (Czech Republic). Inst. of Physics ASCR; Inst. of Thermophysics, Novosibirsk (Russian Federation)
Publication Date:
Report Number(s):
LLNL-JRNL-707660
Journal ID: ISSN 0740-3224; JOBPDE
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Journal of the Optical Society of America. Part B, Optical Physics
Additional Journal Information:
Journal Volume: 34; Journal Issue: 2; Journal ID: ISSN 0740-3224
Publisher:
Optical Society of America (OSA)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 42 ENGINEERING
OSTI Identifier:
1361592
Alternate Identifier(s):
OSTI ID: 1341334

Zhukov, Vladimir P., Rubenchik, Alexander M., Fedoruk, Mikhail P., and Bulgakova, Nadezhda M.. Interaction of doughnut-shaped laser pulses with glasses. United States: N. p., Web. doi:10.1364/JOSAB.34.000463.
Zhukov, Vladimir P., Rubenchik, Alexander M., Fedoruk, Mikhail P., & Bulgakova, Nadezhda M.. Interaction of doughnut-shaped laser pulses with glasses. United States. doi:10.1364/JOSAB.34.000463.
Zhukov, Vladimir P., Rubenchik, Alexander M., Fedoruk, Mikhail P., and Bulgakova, Nadezhda M.. 2017. "Interaction of doughnut-shaped laser pulses with glasses". United States. doi:10.1364/JOSAB.34.000463. https://www.osti.gov/servlets/purl/1361592.
@article{osti_1361592,
title = {Interaction of doughnut-shaped laser pulses with glasses},
author = {Zhukov, Vladimir P. and Rubenchik, Alexander M. and Fedoruk, Mikhail P. and Bulgakova, Nadezhda M.},
abstractNote = {Non-Gaussian laser beams can open new opportunities for microfabrication, including ultrashort laser direct writing. By using a model based on Maxwell’s equations, we investigate the dynamics of doughnut-shaped laser beams focused inside fused silica glass, in comparison with Gaussian pulses of the same energy. The laser propagation dynamics reveals intriguing features of beam splitting and sudden collapse toward the beam axis, overcoming the intensity clamping effect. The resulting structure of light absorption represents a very hot, hollow nanocylinder, which can lead to an implosion process that brings matter to extreme thermodynamic states. Furthermore, by monitoring the simulations of the laser beam scattering we see a considerable difference in both the blueshift and the angular distribution of scattered light for different laser energies, suggesting that investigations of the spectra of scattered radiation can be used as a diagnostic of laser-produced electron plasmas in transparent materials.},
doi = {10.1364/JOSAB.34.000463},
journal = {Journal of the Optical Society of America. Part B, Optical Physics},
number = 2,
volume = 34,
place = {United States},
year = {2017},
month = {1}
}