Laser-Inscribed Diamond Waveguide Resonantly Coupled to Diamond Microsphere
Abstract
An all-diamond photonic circuit was implemented by integrating a diamond microsphere with a femtosecond-laser-written bulk diamond waveguide. The near surface waveguide was fabricated by exploiting the Type II fabrication method to achieve stress-induced waveguiding. Transverse electrically and transverse magnetically polarized light from a tunable laser operating in the near-infrared region was injected into the diamond waveguide, which when coupled to the diamond microsphere showed whispering-gallery modes with a spacing of 0.33 nm and high-quality factors of 105. By carefully engineering these high-quality factor resonances, and further exploiting the properties of existing nitrogen-vacancy centers in diamond microspheres and diamond waveguides in such configurations, it should be possible to realize filtering, sensing and nonlinear optical applications in integrated diamond photonics.
Cite
@article{arxiv.2011.12008,
title = {Laser-Inscribed Diamond Waveguide Resonantly Coupled to Diamond Microsphere},
author = {Nurperi Yavuz and Mustafa Mert Bayer and Hüseyin Ozan Cirkinoğlu and Ali Serpengüzel and Thien Le Phu and Argyro Giakoumaki and Vibhav Bharadwaj and Roberta Ramponi and Shane M. Eaton},
journal= {arXiv preprint arXiv:2011.12008},
year = {2020}
}