58 citations · 134 across the 5 of their papers we have counts for
5 papers
Y coupled terahertz quantum cascade lasers
Owen P. Marshall, Subhasish Chakraborty, Md. Khairuzzaman +2
Here we demonstrate a Y coupled terahertz (THz) quantum cascade laser (QCL) system. The two THz QCLs working around 2.85 THz are driven by independent electrical pulsers. Total pea…
Terahertz emission by diffusion of carriers and metal-mask dipole inhibition of radiation
M. E. Barnes, D. McBryde, G. J. Daniell +7
Terahertz (THz) radiation can be generated by ultrafast photo-excitation of carriers in a semiconductor partly masked by a gold surface. A simulation of the effect taking into acco…
Ultra low threshold current THz quantum cascade lasers based on buried strip-waveguides
S. Dhillon, J. Alton, S. Barbieri +5
THz quantum cascade lasers based on a novel buried cavity geometry are demonstrated by combining double-metal waveguides with proton implantation. Devices are realised with emissio…
Possible evidence of a spontaneous spin-polarization in mesoscopic 2D electron systems
A. Ghosh, C. J. B. Ford, M. Pepper +2
We have experimentally studied the non-equilibrium transport in low-density clean 2D electron systems at mesoscopic length scales. At zero magnetic field (B), a double-peak structu…
High-performance planar light-emitting diode
Marco Cecchini, Vincenzo Piazza, Fabio Beltram +5
Planar light-emitting diodes (LEDs) fabricated within a single high-mobility quantum well are demonstrated. Our approach leads to a dramatic reduction of radiative lifetime and jun…