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Proceedings Paper

Progress in solid state laser resonator design
Author(s): Sandro De Silvestri; Paolo Laporta; Vittorio C. Magni; Orazio Svelto; Gianluca Valentini
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Paper Abstract

By using variable reflectivity mirrors of super-Gaussian profile in unstable resonators instead of traditional hard edge output couplers we have greatly improved the beam quality, also obtaining higher energetic efficiency. Mode profiles have been calculated within geometrical optics approximation and by means of numerical simulations according to the diffractive theory. The output energy has been predicted by means of a closed form expression resulting from an innovative theoretical model that takes account of the effects of mode profile on gain saturation. Several super-Gaussian mirrors have been fabricated by means of a quasi standard dielectric thin film deposition process and have been extensively tested in a pulsed Nd:YAG laser. The experimental results, in terms of output energy and focusing properties, confirm the superior performances of super-Gaussian resonators.

Paper Details

Date Published: 1 August 1990
PDF: 10 pages
Proc. SPIE 1277, High-Power Solid State Lasers and Applications, (1 August 1990); doi: 10.1117/12.20579
Show Author Affiliations
Sandro De Silvestri, Elettronica CNR (Italy)
Paolo Laporta, Elettronica CNR (Italy)
Vittorio C. Magni, Elettronica CNR (Italy)
Orazio Svelto, Elettronica CNR (Italy)
Gianluca Valentini, Elettronica CNR (Italy)

Published in SPIE Proceedings Vol. 1277:
High-Power Solid State Lasers and Applications
Clive L. M. Ireland, Editor(s)

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