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

Published online by Cambridge University Press:  09 March 2009

I. Matsushima ,
Y. Owadano ,
Y. Matsumoto ,
I. Okuda ,
T. Tomie ,
K. Koyama ,
R. Staffin  and
M. Yano
I. Matsushima
Affiliation:
Electrotechnical Laboratory 1–1–4 Umezono Tsukuba 305 Japan
Y. Owadano
Affiliation:
Electrotechnical Laboratory 1–1–4 Umezono Tsukuba 305 Japan
Y. Matsumoto
Affiliation:
Electrotechnical Laboratory 1–1–4 Umezono Tsukuba 305 Japan
I. Okuda
Affiliation:
Electrotechnical Laboratory 1–1–4 Umezono Tsukuba 305 Japan
T. Tomie
Affiliation:
Electrotechnical Laboratory 1–1–4 Umezono Tsukuba 305 Japan
K. Koyama
Affiliation:
Electrotechnical Laboratory 1–1–4 Umezono Tsukuba 305 Japan
R. Staffin
Affiliation:
Electrotechnical Laboratory 1–1–4 Umezono Tsukuba 305 Japan
M. Yano
Affiliation:
Electrotechnical Laboratory 1–1–4 Umezono Tsukuba 305 Japan
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Abstract

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.

Type
Research Article
Information
Laser and Particle Beams , Volume 11 , Issue 2 , June 1993 , pp. 385 - 390
Copyright
Copyright © Cambridge University Press 1993

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References

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