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Title: High efficiency coupling and guiding of intense femtosecond laser pulses in preformed plasma channels in an elongated gas jet

Abstract

We report coupling and guiding of pulses of peak power up to 0.3 TW in 1.5-cm-long preformed plasma waveguides, generated in a high repetition rate argon gas jet. Coupling of up to 52{percent} was measured for 50-mJ, {approximately}110-fs pulses injected at times longer than 20 ns, giving guided intensities up to {approximately}5{times}10{sup 16} W/cm{sup 2}. For short delays between waveguide generation and pulse injection, pulse shortening occurred, with this effect reduced either by increasing delay or injecting a prepulse into the waveguide. There is excessive taper at the waveguide ends, which results from reduced heating at the ends of the jet by the waveguide generation pulse. {copyright} {ital 1999} {ital The American Physical Society}

Authors:
; ; ;  [1]
  1. Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742 (United States)
Publication Date:
OSTI Identifier:
336678
Resource Type:
Journal Article
Journal Name:
Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
Additional Journal Information:
Journal Volume: 59; Journal Issue: 4; Other Information: PBD: Apr 1999
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION; LASER RADIATION; ARGON; PLASMA JETS; BEAM-PLASMA SYSTEMS; WAVEGUIDES; ELECTRON DENSITY; PLASMA ACCELERATION; LASER-RADIATION HEATING

Citation Formats

Nikitin, S P, Alexeev, I, Fan, J, and Milchberg, H M. High efficiency coupling and guiding of intense femtosecond laser pulses in preformed plasma channels in an elongated gas jet. United States: N. p., 1999. Web. doi:10.1103/PhysRevE.59.R3839.
Nikitin, S P, Alexeev, I, Fan, J, & Milchberg, H M. High efficiency coupling and guiding of intense femtosecond laser pulses in preformed plasma channels in an elongated gas jet. United States. doi:10.1103/PhysRevE.59.R3839.
Nikitin, S P, Alexeev, I, Fan, J, and Milchberg, H M. Thu . "High efficiency coupling and guiding of intense femtosecond laser pulses in preformed plasma channels in an elongated gas jet". United States. doi:10.1103/PhysRevE.59.R3839.
@article{osti_336678,
title = {High efficiency coupling and guiding of intense femtosecond laser pulses in preformed plasma channels in an elongated gas jet},
author = {Nikitin, S P and Alexeev, I and Fan, J and Milchberg, H M},
abstractNote = {We report coupling and guiding of pulses of peak power up to 0.3 TW in 1.5-cm-long preformed plasma waveguides, generated in a high repetition rate argon gas jet. Coupling of up to 52{percent} was measured for 50-mJ, {approximately}110-fs pulses injected at times longer than 20 ns, giving guided intensities up to {approximately}5{times}10{sup 16} W/cm{sup 2}. For short delays between waveguide generation and pulse injection, pulse shortening occurred, with this effect reduced either by increasing delay or injecting a prepulse into the waveguide. There is excessive taper at the waveguide ends, which results from reduced heating at the ends of the jet by the waveguide generation pulse. {copyright} {ital 1999} {ital The American Physical Society}},
doi = {10.1103/PhysRevE.59.R3839},
journal = {Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics},
number = 4,
volume = 59,
place = {United States},
year = {1999},
month = {4}
}