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Sawfish photonic crystal cavities with resonances at NV and SnV transition frequencies
/en/research/publications/sawfish-photonic-crystal-cavities-with-resonances-at-nv-and-snv-transition-frequencies
We present the fabrication and characterization of “Sawfish” cavities in diamond, a new design of resonant photonic nanostructures to increase the emission rate of color centers into the…
Transfer Printing of GaAs-based Amplifiers on a-Si:H Waveguides for Evanescently-Coupled Light Amplification in the Near-Infrared Band
/en/research/publications/transfer-printing-of-gaas-based-amplifiers-on-a-sih-waveguides-for-evanescently-coupled-light-amplification-in-the-near-infrared-band
We demonstrate 7-dB light amplification at 921 nm by transfer-printing a GaAs-based amplifier on a a-Si:H waveguide. This paves the way towards the development of evanescently-coupled integrated…
Integrated Magnetic Field Camera Based on Infrared Absorption ODMR Mediated by Diamond NV Centers
/en/research/publications/integrated-magnetic-field-camera-based-on-infrared-absorption-odmr-mediated-by-diamond-nv-centers
Life sciences demand for chip-integrated, fiber-packaged magnetic field cameras to image pulses propagating along nerves. For the first time, we propose and demonstrate such a magnetic field camera…
Investigating atomic-scale solid-state properties with an SnV electrometer in diamond
/en/research/publications/investigating-atomic-scale-solid-state-properties-with-an-snv-electrometer-in-diamond
We present an electrometer based on an optically-active spin defect in diamond with a non-linear Stark response. Using this sensor, we successfully localize charge traps, quantify their impact on…
Coherent excitation of a tin-vacancy color center with the SUPER scheme
/en/research/publications/coherent-excitation-of-a-tin-vacancy-color-center-with-the-super-scheme
We apply the novel coherent excitation scheme SUPER for the first time to a diamond color center using pulses detuned from the transition. This approach perspectively enables spectral filtering of…
Miniaturized Laser Distribution Module for Compact Sr-Based Optical Atomic Clocks
/en/research/publications/miniaturized-laser-distribution-module-for-compact-sr-based-optical-atomic-clocks
We present the layout of a miniaturized laser distribution module as part of a 88Sr optical lattice clock. It consists of distributed Bragg reflector lasers (679 and 707 nm) combined with…
On scalability of static 940 nm VCSEL arrays
/en/research/publications/on-scalability-of-static-940-nm-vcsel-arrays
Static light-current-voltage (LIV) curves, spectrum, and far-field o f oxideconfined 7, 19, 100, and 312 vertical-cavity surface-emitting laser (VCSEL) arrays centered at 940 nm were collected…
Tailor Bragg grating designs for specific laser applications via coupled-mode-theory fit and machine learning
/en/research/publications/tailor-bragg-grating-designs-for-specific-laser-applications-via-coupled-mode-theory-fit-and-machine-learning
Here we introduce efficient machine learning models trained on a 3D FDTD simulation-based database to predict Bragg grating characteristics from the main and the side lobes of reflectance spectra…
Coupled Mode Theory Fitting of Bragg Grating Spectra Obtained with 3D FDTD Method
/en/research/publications/coupled-mode-theory-fitting-of-bragg-grating-spectra-obtained-with-3d-fdtd-method
This study focuses on accurately fit of the main and side lobes of reflectance obtained through precise 3D FDTD simulations using coupled-mode-theory. This approach based on surrogate modeling…
AlGaN on AlN/Sapphire: A New Material Platform in Integrated Photonics Technology
/en/research/publications/algan-on-alnsapphire-a-new-material-platform-in-integrated-photonics-technology
AlGaN on AlN/Sapphire stands out in photonics for its strong nonlinearity, electro-optic modulability, and low loss in the visible spectrum. We fabricate and characterize AlGaN photonic devices,…