Beam smoothing by broadband random-phase irradiation

A new technique is proposed to achieve smooth laser irradiation profiles on laser fusion targets employing the broad bandwidth of KrF lasers. In this technique, smoothing is obtained by using a spectral dispersing optical device and a random-phase plate placed in front of a focusing lens. Experiment...

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Bibliographic Details
Published in:Optics communications 1991-07, Vol.84 (3), p.175-178
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
Fundamental areas of phenomenology (including applications)
Lasers
Optics
Physics
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Summary:A new technique is proposed to achieve smooth laser irradiation profiles on laser fusion targets employing the broad bandwidth of KrF lasers. In this technique, smoothing is obtained by using a spectral dispersing optical device and a random-phase plate placed in front of a focusing lens. Experimental results demonstrate that this simple optical system is effective for smooth irradiation on targets.
ISSN:0030-4018
1873-0310
DOI:10.1016/0030-4018(91)90223-Z