The determination of electron density profiles from refraction measurements obtained using holographic interferometry |
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Authors: | CJ Tallents MDJ Burgess B Luther-Davies |
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Institution: | Laser Physics Laboratory, Department of Engineering Physics, Research School of Physical Sciences, The Australian National University, Canberra ACT 2600, Australia |
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Abstract: | The angles a fourth-harmonic holographic interferometer probing beam is refracted upon passing through a neodymium laser-produced plasma have been measured by varying the focus during reconstruction of the hologram. A method (not requiring the numerical inversion of an integral equation) for using such refraction measurements to give the plasma electron density profile is shown to produce a profile in agreement with that obtained from the phase information on the reconstructed in-focus interferogram. |
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