3.24 Tbit/s (81 WDM x 40 Gbit/s) carrier suppressed RZ (CS-RZ) format is simultaneously generated using a single supercontinuum source pumped by optically multiplexed 40 Gbit/s CS-RZ and is transmitted over 80 km link

We present first results on the imaging of the twodimensional magnetic field distributions using a recently developed magnetic field imaging camera (MFIC). The instrument is based on laser-pumped atomic magnetometry with an alkali vapour in a buffer gas. The device provides millimetre spatial and sub-second time resolution, and allows mapping the magnetic field from 2 cm surfaces. We apply the ...

Due to their extremely weak intensity, biomagnetic fields are usually detected by means of superconducting interference devices (SQUID) which are currently the most sensitive magnetic sensors available. To reduce construction and running costs, extensive efforts have been dedicated to the development of High-Tc SQUIDs working at liquid nitrogen temperature and suitable for biomagnetic applicati...

Atomic spin sensors offer precision measurements using compact microfabricated packages, placing them in a competitive position for both market and research applications. The performance of these sensors, such as the dynamic range, may be enhanced through magnetic field control. In this work, we discuss design miniature coils three-dimensional localized control by direct placement around sensor...

Optically pumped alkali metal atoms currently provide a sensitive solution for magnetic microscopic measurements. As the most practicable plan, Faraday rotation of linearly polarized light is extensively used in spin polarization measurements of alkali metal atoms. In some cases, near-resonant Faraday rotation is applied to improve the sensitivity. However, the near-resonant linearly polarized ...

A coherent transceiver using a THz quantum cascade (TQCL) laser as the transmitter and an optically pumped molecular laser as the local oscillator has been used, with a pair of Schottky diode mixers in the receiver and reference channels, to acquire high-resolution images of fully illuminated targets, including scale models and concealed objects. Phase stability of the received signal, sufficie...

Gain competition is analyzed theoretically on coupled stimulated emission transitions in -type configurations of excited atoms and compared with experimental observations in electrically and optically pumped random media. Under steady-state conditions, we predict and observe dramatic spectral quenching among F5/2 transitions in electron-beam-irradiated Nd3+: -Al2O3 nanopowders, identifying a si...