Bulk diamond optical waveguides fabricated by focused femtosecond laser pulses
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2017-02-24 |
| Journal | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE |
| Authors | John P. Hadden, BelƩn Sotillo, Vibhav Bharadwaj, Stefano Rampini, Federico Bosia |
| Institutions | Institute of Nanostructured Materials, Politecnico di Milano |
| Citations | 1 |
Abstract
Section titled āAbstractāDiamondās nitrogen-vacancy (NV) centers show great promise in sensing applications and quantum computing due to their long electron spin coherence time and their ability to be located, manipulated and read out using light. The electrons of the NV center, largely localized at the vacancy site, combine to form a spin triplet, which can be polarized with 532- nm laser light, even at room temperature. The NVās states are isolated from environmental perturbations making their spin coherence comparable to trapped ions. An important breakthrough would be in connecting, using waveguides, multiple diamond NVs together optically. However, the inertness of diamond is a significant hurdle for the fabrication of integrated optics similar to those that revolutionized silicon photonics. In this work we show the possibility of buried waveguide fabrication in diamond, enabled by focused femtosecond high repetition rate laser pulses. We use Ī¼Raman spectroscopy to gain better insight into the structure and refractive index profile of the optical waveguides.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2016 - Resonant directional coupling to silicon microspheres by glass optical waveguides fabricated by femtosecond laser