16 citations · 32 across the 4 of their papers we have counts for
5 papers
Extending Ground-Based Gravitational-Wave Sensitivity to 5 Hz
Amit Singh Ubhi, Lari Koponen, Jiri Smetana +11
Extending the sensitivity of terrestrial gravitational-wave detectors below 20 Hz is a long-standing challenge, limited by ground motion and inertial sensing noise. In this letter,…
Sensitivity and control of a 6-axis fused-silica seismometer
Jiri Smetana, Amit Singh Ubhi, Emilia Chick +12
We present a pair of seismometers capable of measurement in all six axes of rigid motion. The vacuum-compatible devices implement compact interferometric displacement sensors to su…
An optically pumped magnetic gradiometer for the detection of human biomagnetism
Harry Cook, Yulia Bezsudnova, Lari M. Koponen +3
We realise an intrinsic optically pumped magnetic gradiometer based on non-linear magneto-optical rotation. We show that our sensor can reach a gradiometric sensitivity of 18 $\tex…
Double-containment coil with enhanced winding mounting for transcranial magnetic stimulation with reduced acoustic noise
Lari M. Koponen, Stefan M. Goetz, Angel V. Peterchev
Objective: This work aims to reduce the acoustic noise level of transcranial magnetic stimulation (TMS) coils. TMS requires high currents (several thousand amperes) to be pulsed th…
Ferromagnetic resonance in -Co magnetic composites
Khattiya Chalapat, Jaakko V. I. Timonen, Maija Huuppola +7
We investigate the electromagnetic properties of assemblies of nanoscale -cobalt crystals with size range between 5 nm to 35 nm, embedded in a polystyrene (PS) matrix, at microw…