maser lab


“If a worker wants to do good work, they must first sharpen their tools.” ― Confucius, The Analects


Electron paramagnetic resonance (EPR)
In the lab we perform continuous-wave (CW), transient and pulsed electron paramagnetic resonance (EPR) spectroscopy on spins using a Bruker EMX spectrometer that has custom-built optimized cavities, an alternate home-built bridge and broadband spectral receiver. There is optical access for photo-excitation via laser either beam or fibre.

Nuclear magnetic resonance (NMR), Optically-Detected Magnetic Resonance (ODMR) and Ferromagnetic resonance (FMR)
An additional Bruker electromagnet (up to 1 Tesla) is used for custom experiments such as nuclear magnetic resonance (NMR), optically-detected magnetic resonance (ODMR) and ferromagnetic resonance.

Quantum sensing
Using ODMR we can probe a smaller sample volumes, so the magnetic field homogeneity is less important allowing us to use permanent magnets and Helmholtz coils.

Microwave cavities
We build state-of-the-art microwave resonators: from aperiodic Bragg-reflector (photonic crystal) cavities with Q-factors of 600,000 at 30 GHz to dielectric resonators with optimized Purcell factors for use in masers, cavity quantum electrodynamics and magnetic resonance.


To design microwave components (like cavities, resonators etc) we use commercial software (CST Microwave Studio and COMSOL), open-source software (MEEP) and in-house mode-matching codes.

We use Python, Matlab, Mathematica, Fortran, C++ and Julia programming languages.