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I agree, do not show this message again.Supper-Gaussian TiO2 laser mirror made by RF-sputtering of pure titanium target
A. POPESCU1, D. SAVASTRU1, S. MICLOS1,* , V. BRAIC1, A. KISS1
Affiliation
- National Institute of R&D of Optoelectronics INOE 2000, 409 Atomistilor Str., PO Box MG5, 077125, Magurele, Romania
Abstract
The aim of this report is the elaboration of TiO2 thin film coatings with Super-Gaussian reflectivity profile designed to be used as mirror in laser unstable resonators. RF reactive sputtering of pure titanium target was selected as technological method. The gas flow and Ar to O2 ratio of gas mixture optimization were set as result of optical transmission spectra measurements. Secondary collisions that take place behind the selected stainless steel mask give the possibility to obtain the required reflectivity profile. The central reflectivity of 29 %, the waist of 1.42 mm and the super Gaussian order of 3.5 were obtained. The fitting method and procedure is developed..
Keywords
Lasers, grade-index films, variable-reflectivity mirror, RF sputtering, TiO2 films.
Submitted at: Nov. 30, 2010
Accepted at: Nov. 25, 2010
Citation
A. POPESCU, D. SAVASTRU, S. MICLOS, V. BRAIC, A. KISS, Supper-Gaussian TiO2 laser mirror made by RF-sputtering of pure titanium target, Journal of Optoelectronics and Advanced Materials Vol. 12, Iss. 12, pp. 2462-2466 (2010)
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