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Optical characterization of proton irradiated diamond

Authors :: Maurizio Vannoni
Paolo Olivero
Anna Sytchkova
S Calusi
Stefano Lagomarsino
Source :: Conference on Optical Design and Engineering IV, pp. 81671O–81671O, Marseille, FRANCE, SEP 05-08, 2011, info:cnr-pdr/source/autori:Sytchkova A. [ 1 ] ; Lagomarsino S. [ 2 ] ; Vannoni M. [ 3 ] ; Calusi S. [ 4 ] ; Olivero P. [ 5 ]/congresso_nome:Conference on Optical Design and Engineering IV/congresso_luogo:Marseille, FRANCE/congresso_data:SEP 05-08, 2011/anno:2011/pagina_da:81671O/pagina_a:81671O/intervallo_pagine:81671O–81671O
Publication Year :: 2011
Publisher :: SPIE, 2011.
Abstract: Manufacturing of miniaturized photonic devices based on diamond technology is possible by implanting the pristine material with highly energetic particles. Here we report on the spectral characterization of the optical constants of proton-irradiated diamond. Absorption of the irradiated zones was estimated in the UV-vis-NIR from direct transmittance measurement using a dedicated setup with enhanced spatial resolution. The OPD data providing an estimation of the thickness of the damaged area and its depth profile, have allowed then evaluation of the extinction coefficient from the transmission measurements. Simultaneous variation of dispersive optical constants makes the modeling significantly more complicated compared to the above cited monochromatic study. Keywords: Optical constants; Diamond crystal; Ion implantation 1. INTRODUCTION Manufacturing of miniaturized photonic devices based on diamond technology is possible by implanting the pristine material with highly energetic particles. Theoretically the optical constants of irradiated material may vary from the values typical for pristine diamond to those of graphite, however only precise knowledge of the optical constants allows calculation of performance of the novel photonic micro- and nano-devices like e.g. diamond-based waveguiding structures