Skip to main content
SpringerLink
Log in

Edge steepness and plateau uniformity of a nearly flat-top-shaped laser beam

  • Published:
Applied Physics B Aims and scope Submit manuscript

Abstract

We present experimental results of reshaping and making uniform the spatial energy distribution of a raw beam emitted by a large-aperture (10 cm×5 cm) excimer laser. To this end, we use an optical system that is able to homogenize “bad beams” having strong local intensity spikes, and to modulate almost continuously the spot size of the homogenized beam along one or both axes in a fixed target plane. We evaluate the results using the standard parameters described in the ISO 13694:2000 document of the International Organization for Standardization. We find that the reliability of the results is dependent both on the experimental setup and on the definition of the 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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. F.M. Dickey, S.C. Holswade: Laser Beam Shaping: Theory and Techniques (M. Dekker, New York, Basel 2000)

  2. European EN ISO 13694 (April 2000); this is the official version of the document that takes into account the corrections introduced on the 19 July, 2000

  3. P. Di Lazzaro, S. Bollanti, G. Felici, D. Murra: Proc. SPIE 5131, 102 (2003)

    Google Scholar 

  4. D. Murra, S. Bollanti, P. Di Lazzaro: ENEA Patent No. IT 01316395 (UIBM, 2000); patent pending No. 09/727.268 (US PTO, Nov. 30, 2000); No. 00830807.4–2210 (EPO, Dec. 6, 2000)

    Google Scholar 

  5. T. Letardi, S. Bollanti, P. Di Lazzaro, F. Flora, N. Lisi, C.E. Zheng: Il Nuovo Cimento D 14, 495 (1992); see also P. Di Lazzaro: Proc. SPIE 3423, 35 (1998)

    Google Scholar 

  6. S. Bollanti, P. Di Lazzaro, F. Flora, T. Letardi, N. Lisi, C.E. Zheng: Appl. Phys. B 55, 84 (1992)

    Google Scholar 

  7. K. Mann, J. Ohlenbusch, V. Westphal: Proc. SPIE 2870, 367 (1996)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. ENEA Center of Frascati, P.O. Box 65, 00044, Frascati, Italy

    S. Bollanti, P. Di Lazzaro, D. Murra & E. Tefouet Kana

  2. Info&Tech, via Teognide 24, 00124, Rome, Italy

    G. Felici

Authors
  1. S. Bollanti
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. P. Di Lazzaro
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. D. Murra
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. E. Tefouet Kana
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. G. Felici
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to P. Di Lazzaro.

Additional information

PACS

42.55.Lt; 42.60.Jf

Rights and permissions

Reprints and permissions

About this article

Cite this article

Bollanti, S., Di Lazzaro, P., Murra, D. et al. Edge steepness and plateau uniformity of a nearly flat-top-shaped laser beam. Appl Phys B 78, 195–198 (2004). https://doi.org/10.1007/s00340-003-1297-1

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00340-003-1297-1

Keywords

Search

Navigation