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Title: Dynamics of optical breakdown in air induced by single and double nanosecond laser pulses

In this paper, an optical breakdown in air induced by single and double nanosecond laser pulses was studied. A high power Nd:YAG laser beam was used for producing optical breakdown plasma in the air. The dynamics of breakdown plasma were studied using an optical probe beam. A portion of the laser beam was used, as the probe beam and was aligned to propagate (perpendicular to the pump beam) through the breakdown region. The transmission of the probe beam (through the breakdown region) was temporally measured for both single and double pulse irradiations. The results were used to describe the evolution of the induced plasma in both conditions. These results show that the plasma formation time and its absorptivity are strongly dependent on the single or double pulse configurations.
Authors:
;  [1]
  1. Department of Physics, Iran University of Science and Technology, Narmak, Tehran 1684613114 (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22489959
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 12; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AIR; BEAM TRANSPORT; BREAKDOWN; LASER RADIATION; NEODYMIUM LASERS; PHOTON BEAMS; PLASMA; PULSES