Emission and Absorption of Color Centers in a Diamond Membrane
A recently published research paper is entitled, “Cavity-Enhanced Emission and Absorption of Color Centers in a Diamond Membrane with Selectable Strain.”
Here is the Abstract of this paper:
Group IV color centers in diamond are among the most promising optically active spin systems with strong optical transitions and long spin coherences. The ground-state splitting of the center is particularly important to suppress the interaction with coherence-limiting phonons, which improves the coherence properties and sets the upper limit for the operating temperature. Negatively charged silicon-vacancy centers have an ordinary ground-state splitting of only 48 GHz, resulting in required temperatures below one Kelvin, which can only be achieved by dilution refrigerators. Here, we increase the ground-state splitting by up to an order of magnitude by induced strain in a single[1]crystal diamond membrane. Furthermore, we demonstrate cavity-assisted spectroscopy enabled by coupling the emitter ensemble with a selectable strain to the mode of a Fabry-Perot microcavity. Calculation of the absorption cross-section yields σensabs = 4.9·10−11 cm2. Together with the Purcell-enhanced twofold reduction in emitter lifetime below 1 ns, this makes the system a promising spin-photon interface at moderate temperatures of 4 K.
The experimental setup for this research used a ZET730nf filter from Chroma Technology.
About Chroma Technology
Chroma Technology is a leading manufacturer and OEM supplier of high performance optical filters used in a wide range of applications, including health care, biomedical research, remote sensing, machine vision, and aerospace. Chroma offers an extensive selection of optical filter sets and filter accessories, as well as custom solutions tailored to customer-specific needs.
For more information or a quotation for this or other Chroma products, contact IL Photonics.