Direct measurement of the matched spot size in a slow capillary discharge optical waveguide

Journal Article · Sat Dec 15 04:00:00 EST 2007 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2821601· OSTI ID:21024673

Antsiferov, Pavel S; Akdim, Mohamed R; Dam, Herman T. van ^[1]

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1. Institute for Spectroscopy, RAS, Troitsk, Moscow region 142190 (Russian Federation)

This communication presents direct method for experimental determining the matched spot size in a plasma optical waveguide, created in a slow capillary discharge. It can be used for Laser Wakefield Acceleration experiments in addition to interferometry for fast control of optical properties of discharge plasma. The measurements are done by means of the comparison of the laser beam size at the entrance and at the exit of the plasma channel. They are direct in the sense that the interpretation is made in terms of the refractive index without usage of the information about electron density distribution. The method can be used for matched spot size measurement in conditions of the nonlinear effects (transmission of high power laser pulses)

• OSTI ID: 21024673
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 12 Vol. 78; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACCELERATION
BEAMS
COMPARATIVE EVALUATIONS
ELECTRIC DISCHARGES
ELECTRON DENSITY
INTERFEROMETRY
LASERS
LIGHT TRANSMISSION
NONLINEAR PROBLEMS
PLASMA
PLASMA DENSITY
PULSES
REFRACTIVE INDEX
WAKEFIELD ACCELERATORS
WAVEGUIDES