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Proceedings Paper

Flat-top shaped laser beams: reliability of standard parameters
Author(s): P. Di Lazzaro; S. Bollanti; D. Murra; E. Tefouet Kana; G. Felici
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Paper Abstract

We present experimental results of reshaping and making uniform the spatial energy distrubution of raw beams respectively emitted by a low-coherence excimer laser and by a highly coherent diode pumped Nd-YAG laser. We used an optical system which is able to homegenize "bad beams" having strong local intensity spikes, and to modulate almost continously the spot size of the homogenized beam along one or both axes in a fixed target plane. We have evaluated the results using the standard parameters described in the document of the International Organization for Standardization ISO 13694. We found that the reliability of the results is dependent both on teh experimental setup and on the definition of edge steepness and plateau uniformity of the quoted ISO document. Here we propose an amendment to the definition of these standard parameters that could improve their reliability.

Paper Details

Date Published: 23 March 2005
PDF: 6 pages
Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); doi: 10.1117/12.611248
Show Author Affiliations
P. Di Lazzaro, Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (Italy)
S. Bollanti, Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (Italy)
D. Murra, Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (Italy)
E. Tefouet Kana, Ente per le Nuove Tecnologie, l'Energia e l'Ambiente (Italy)
G. Felici, Info and Tech S.p.A. (Italy)


Published in SPIE Proceedings Vol. 5777:
XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Jarmila Kodymova, Editor(s)

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