Felix A. Hahl
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View article: Two-media laser threshold magnetometry: A magnetic-field-dependent laser threshold
Two-media laser threshold magnetometry: A magnetic-field-dependent laser threshold Open
Nitrogen-vacancy (NV) centers in diamond are a promising platform for high-precision magnetometry. In contrast to the use of spontaneous emission in a number of NV-magnetometers, laser threshold magnetometry exploits stimulated emission of…
View article: High-contrast absorption magnetometry in the visible to near-infrared range with nitrogen-vacancy ensembles
High-contrast absorption magnetometry in the visible to near-infrared range with nitrogen-vacancy ensembles Open
Magnetometry with nitrogen-vacancy (NV) centers in diamond has so far been measured via emission of light from NV centers or via absorption at the singlet transition at 1042 nm. Here, we demonstrate a phenomenon of broadband optical absorp…
View article: High-contrast absorption magnetometry in the visible to near-infrared range with nitrogen-vacancy ensembles
High-contrast absorption magnetometry in the visible to near-infrared range with nitrogen-vacancy ensembles Open
Magnetometry with nitrogen-vacancy (NV) centers has so far been measured via emission of light from NV centers or via absorption at the singlet transition at 1042 nm. Here, we demonstrate a phenomenon of broadband optical absorption by the…
View article: Dual-media laser system: Nitrogen vacancy diamond and red semiconductor laser
Dual-media laser system: Nitrogen vacancy diamond and red semiconductor laser Open
Diamond is a potential host material for laser applications due to its exceptional thermal properties, ultrawide bandgap, and color centers, which promise gain across the visible spectrum. More recently, coherent laser methods offer improv…
View article: Absorption and birefringence study for reduced optical losses in diamond with high nitrogen-vacancy concentration
Absorption and birefringence study for reduced optical losses in diamond with high nitrogen-vacancy concentration Open
The use of diamond colour centres such as the nitrogen-vacancy (NV) centre is increasingly enabling quantum sensing and computing applications. Novel concepts like cavity coupling and readout, laser-threshold magnetometry and multi-pass ge…
View article: Continuous-wave nitrogen-vacancy diamond laser system assisted by a red diode laser
Continuous-wave nitrogen-vacancy diamond laser system assisted by a red diode laser Open
Diamond has long been identified as a potential host material for laser applications. This potential arises due to its exceptional thermal properties, ultra-wide bandgap, and color centers which promise gain across the visible spectrum. Mo…
View article: Rapid determination of single substitutional nitrogen Ns concentration in diamond from UV-Vis spectroscopy
Rapid determination of single substitutional nitrogen Ns concentration in diamond from UV-Vis spectroscopy Open
Single substitutional nitrogen atoms Ns0 are the prerequisite to create nitrogen-vacancy (NV) centers in diamonds. They not only serve as the electron donors to create the desired NV− center and provide charge stability against photo-ionis…
View article: Magnetic-field-dependent stimulated emission from nitrogen-vacancy centers in diamond
Magnetic-field-dependent stimulated emission from nitrogen-vacancy centers in diamond Open
Negatively charged nitrogen-vacancy (NV) centers in diamond are promising magnetic field quantum sensors. Laser threshold magnetometry theory predicts improved NV center ensemble sensitivity via increased signal strength and magnetic field…
View article: Creation of nitrogen-vacancy centers in chemical vapor deposition diamond for sensing applications
Creation of nitrogen-vacancy centers in chemical vapor deposition diamond for sensing applications Open
The nitrogen-vacancy (NV) center in diamond is a promising quantum system for magnetometry applications exhibiting optical readout of minute energy shifts in its spin sub-levels. Key material requirements for NV ensembles are a high NV − c…
View article: Creation of nitrogen-vacancy centers in chemical vapor deposition\n diamond for sensing applications
Creation of nitrogen-vacancy centers in chemical vapor deposition\n diamond for sensing applications Open
The nitrogen-vacancy (NV) center in diamond is a promising quantum system for\nmagnetometry applications exhibiting optical readout of minute energy shifts in\nits spin sub-levels. Key material requirements for NV ensembles are a high\nNV$…
View article: Magnetic-Field-Dependent Stimulated Emission from Nitrogen-Vacancy Centres in Diamond
Magnetic-Field-Dependent Stimulated Emission from Nitrogen-Vacancy Centres in Diamond Open
Negatively charged nitrogen-vacancy centres in diamond are promising quantum magnetic field sensors. Laser threshold magnetometry has been a theoretical approach for the improvement of NV-centre ensemble sensitivity via increased signal st…