Anti-Reflection Coating for Nitrogen-Vacancy Optical Measurements in Diamond
Yeung, T. K.
Stanwix, P. L.
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CitationYeung, T. K., D. Le Sage, L. M. Pham, P. L. Stanwix, and R. L. Walsworth. 2012. Anti-Reflection Coating for Nitrogen-Vacancy Optical Measurements in Diamond. Applied Physics Letters 100, no. 25: 251111.
AbstractWe realize anti-reflection (AR) coatings for optical excitation and fluorescence measurements of nitrogen-vacancy (NV) color centers in bulk diamond by depositing quarter-wavelength thick silica layers on the diamondsurface. These AR coatings improve NV-diamond optical measurements by reducing optical reflection at the diamond-air interface from ≈17% to ≈2%, which allows more effective NV optical excitation and more efficient detection of NV fluorescence. We also show that diamondAR coatings eliminate standing-wave interference patterns of excitation laser intensity within bulk diamond, and thereby greatly reduce spatial variations in NV fluorescence, which can degrade spatially resolved magnetic field sensing using NV centers.
Citable link to this pagehttp://nrs.harvard.edu/urn-3:HUL.InstRepos:11878775
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Comments made during the workflow stepsCan post pub per sherpa. FAR 2013