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RESEARCH PRODUCT

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subject

SuperconductivityNuclear and High Energy PhysicsMaterials scienceSpectrometerSpinsbusiness.industryBiophysics010402 general chemistryCondensed Matter PhysicsArbitrary waveform generator01 natural sciencesBiochemistry030218 nuclear medicine & medical imaging0104 chemical scienceslaw.invention03 medical and health sciencesResonator0302 clinical medicineOpticslawbusinessElectron paramagnetic resonanceSpectroscopyMicrowave

description

Abstract In high sensitivity inductive electron spin resonance spectroscopy, superconducting microwave resonators with large quality factors are employed. While they enhance the sensitivity, they also distort considerably the shape of the applied rectangular microwave control pulses, which limits the degree of control over the spin ensemble. Here, we employ shaped microwave pulses compensating the signal distortion to drive the spins faster than the resonator bandwidth. This translates into a shorter echo, with enhanced signal-to-noise ratio. The shaped pulses are also useful to minimize the dead-time of our spectrometer, which allows to reduce the wait time between successive drive pulses.