Nanodiamond in tellurite glass Part I: origin of loss in nanodiamond-doped glass

TL;DR

This study investigates how fabrication conditions affect the optical loss in nanodiamond-doped tellurite glass fibers, aiming to optimize their properties for quantum photonic applications.

Contribution

It identifies key fabrication parameters influencing loss and proposes conditions to reduce it for practical use.

Findings

Melting temperature impacts nanodiamond-glass interaction.

Nanodiamond concentration affects optical loss.

Optimized fabrication conditions reduce loss to application-ready levels.

Abstract

Tellurite glass fibers with embedded nanodiamond are attractive materials for quantum photonic applications. Reducing the loss of these fibers in the 600-800 nm wavelength range of nanodiamond fluorescence is essential to exploit the unique properties of nanodiamond in the new hybrid material. In the first part of this study, we report the effect of interaction of the tellurite glass melt with the embedded nanodiamond on the loss of the glasses. The glass fabrication conditions such as melting temperature and concentration of NDs added to the melt were found to have critical influence on the interaction. Based on this understanding, we identified promising fabrication conditions for decreasing the loss to levels required for practical applications.