P. Bindner et al., REFRACTIVE-INDEX BEHAVIORS OF HELIUM IMPLANTED OPTICAL PLANAR WAVE-GUIDES IN LINBO3, KTIOPO4 AND LI2B4O7, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 142(3), 1998, pp. 329-337
LiNbO3, KTiOPO4 (KTP) and Li2B4O7 (LTB) are three materials presenting
specific properties for electro-optic, second harmonic generation and
acousto-optic integrated applications, respectively. An optical chara
cterization was therefore realized in each of them using the 'dark m-l
ines' spectroscopy. From the angular guided modes spectra are calculat
ed the effective refractive indices which values serve to construct th
e index profiles by an inverse WKB method. Shifts between index profil
es falls were observed. We discuss those particular behaviors and expl
ain them considering three parameters: the model to draw index profile
, the experimental measurements and the ionic implantation effects. (C
) 1998 Elsevier Science B.V. All rights reserved.