130 citations · 245 across the 8 of their papers we have counts for
6 papers · 1 filter
High-sensitivity silicon nitride microring resonator opto-fluidic sensor
Davey O. Armstrong, Sherif Ibrahim, Shirin Naserikarimvand +4
Photonic integrated circuit devices can be used as refractometric opto-fluidic sensors to detect the presence of analytes in solution at low concentrations. In this work, we invest…
Femtosecond laser-written nano-ablations containing bright antibunched emitters on gallium nitride
Yanzhao Guo, Giulio Coccia, Vibhav Bharadwaj +5
Femtosecond laser-writing offers distinct capabilities for fabrication, including three-dimensional, multi-material, and sub-diffraction-limited patterning. In particular, demonstr…
Enhanced light collection from a gallium nitride color center using a near index-matched solid immersion lens
S. G. Bishop, J. P. Hadden, R. Hekmati +3
Among the wide-bandgap compound semiconductors, gallium nitride is the most widely available material due to its prevalence in the solid state lighting and high-speed/high-power el…
An integrated magnetometry platform with stackable waveguide-assisted detection channels for sensing arrays
Michael Hoese, Michael K. Koch, Vibhav Bharadwaj +8
The negatively-charged NV-center in diamond has shown great success in nanoscale, high-sensitivity magnetometry. Efficient fluorescence detection is crucial for improving the s…
Quantum micro-nano devices fabricated in diamond by femtosecond laser and ion irradiation
Shane M. Eaton, J. P. Hadden, Vibhav Bharadwaj +12
Diamond has attracted great interest as a quantum technology platform thanks to its optically active nitrogen vacancy center (NV). The NV's ground state spin can be read out optica…
Polarized micro-Raman studies of femtosecond laser written stress-induced optical waveguides in diamond
B. Sotillo, A. Chiappini, V. Bharadwaj +7
Understanding the physical mechanisms of the refractive index modulation induced by femtosecond laser writing is crucial for tailoring the properties of the resulting optical waveg…