Epitaxial CBN growth for fast electro-optic tunable devices

Paul F. Ndione; Mounir Gaidi; Cristophe Durand; Roberto Morandotti; Mohamed Chaker

doi:10.1117/12.628556

13 October 2005 Epitaxial CBN growth for fast electro-optic tunable devices

Paul F. Ndione, Mounir Gaidi, Cristophe Durand, Roberto Morandotti, Mohamed Chaker

Proceedings Volume 5970, Photonic Applications in Devices and Communication Systems; 597011 (2005) https://doi.org/10.1117/12.628556
Event: Photonics North, 2005, Toronto, Canada

Abstract

In this study, we report for the first time the epitaxial growth of CBN thin films on Magnesium Oxide (MgO) substrates for optical device applications. A high deposition temperature (greater than or equal to to 800 ^oC) is required to obtain the epitaxial growth of CBN films. A parametric study is proposed in order to elaborate CBN thin films with a crystal structure as close as possible to that of a CBN bulk single crystal and with good optical characteristics. In particular, a low oxygen pressure (1 mTorr) allows synthesizing high-quality CBN thin films with an out-off plane lattice parameter comparable to the one of CBN bulk material at low surface roughness. The optical characterization of the high-quality CBN thin films reveals a high optical transmission (greater than or equal to 85 %) and a refractive index equal to 2.22 at 1.55 μm for certain deposition conditions. These optical properties clearly indicate the potential of CBN thin films for waveguide applications. This work presents a significant first step toward the integration and the potential use of CBN films for optical device applications.

Citation Download Citation

Paul F. Ndione, Mounir Gaidi, Cristophe Durand, Roberto Morandotti, and Mohamed Chaker "Epitaxial CBN growth for fast electro-optic tunable devices", Proc. SPIE 5970, Photonic Applications in Devices and Communication Systems, 597011 (13 October 2005); https://doi.org/10.1117/12.628556

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available