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1 August 1990 Progress in solid state laser resonator design
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Proceedings Volume 1277, High-Power Solid State Lasers and Applications; (1990)
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands
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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Sandro De Silvestri, Paolo Laporta, Vittorio C. Magni, Orazio Svelto, and Gianluca Valentini "Progress in solid state laser resonator design", Proc. SPIE 1277, High-Power Solid State Lasers and Applications, (1 August 1990);


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