Beam-smoothing effect in broad-band random-phase irradiation

A new technique to achieve smooth laser irradiation profiles on laser fusion targets is evaluated numerically and experimentally. In this technique, smoothing is obtained by using a spectral dispersing optic and a random-phase plate placed in front of a focusing lens employing the broad-bandwidth of...

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Bibliographic Details
Published in:Laser and particle beams 1993-06, Vol.11 (2), p.385-390
Main Authors: Matsushima, I., Owadano, Y., Matsumoto, Y., Okuda, I., Tomie, T., Koyama, K., Staffin, R., Yano, M.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Magnetic confinement and equilibrium
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
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Summary:A new technique to achieve smooth laser irradiation profiles on laser fusion targets is evaluated numerically and experimentally. In this technique, smoothing is obtained by using a spectral dispersing optic and a random-phase plate placed in front of a focusing lens employing the broad-bandwidth of KrF lasers. Experimental results and numerical calculations agree well, verifying that this simple optical system is effective for smooth irradiation on targets.
ISSN:0263-0346
1469-803X
DOI:10.1017/S0263034600004973