Flat-top shaped laser beams: reliability of standard parameters

P. Di Lazzaro; S. Bollanti; D. Murra; E. Tefouet Kana; G. Felici

doi:10.1117/12.611248

23 March 2005 Flat-top shaped laser beams: reliability of standard parameters

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

Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611248
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic

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.

Citation Download Citation

P. Di Lazzaro, S. Bollanti, D. Murra, E. Tefouet Kana, and G. Felici "Flat-top shaped laser beams: reliability of standard parameters", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); https://doi.org/10.1117/12.611248

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available