Propagation of flattened Gaussian beams

V. Bagini

doi:10.1117/12.2316041

1 September 1996 Propagation of flattened Gaussian beams

V. Bagini

Proceedings Volume 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology; 27789S (1996) https://doi.org/10.1117/12.2316041
Event: 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 1996, Taejon, Korea, Republic of

Abstract

In many applications of light beams, a field is required whose amplitude on a fixed plane is as uniform as possible within a certain area and practically vanishing outside. Typical examples are furnished by optical processing, beam shaping and laser cavities. Many different field profiles exhibit such a property, and the most employed one is the so-called Super-Gaussian profile [1], whose use in laser cavities and other applications has given good results [2-4]. Unfortunately, the study of the propagation features of the beams generated by this type of profile is to be handled numerically, and no closed expressions for their paraxial propagation behaviour are available. Recently [5], a new class of top hat profiles has been introduced, the so-called Flattened Gaussian ones. Their main virtue concerns the possibility of expanding these profiles as a. finite sum of Laguerre-Gauss function, so many properties can be exactly obtained. In particular, in this work we describe paraxial and far-field propagation features of the beams generated by these profiles, namely Flattened Gaussian beams (FGB).

Citation Download Citation

V. Bagini "Propagation of flattened Gaussian beams", Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 27789S (1 September 1996); https://doi.org/10.1117/12.2316041

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