arXiv subjects

Marcella Giovannini

Publications and source records attributed to Marcella Giovannini.

2 recordsLinked to original sources

arXiv2006

High power spatial single-mode quantum cascade lasers at 8.9 $μ$m

High performance of InP-based quantum cascade lasers emitting at $λ$ ~ 9$μ$m are reported. Thick electroplated gold layer was deposited on top of the laser to improve heat dissipation. With one facet high reflection coated, the devices produce a maximum output power of 175mW at 40% duty cycle at room temperature and continuous-wave operation up to 278K.

physics.optics↗

arXiv2005

Mid-Infrared Single Photon Counting

We report a procedure to detect mid-infrared single photons at 4.65 um via a two-stage scheme based on Sum Frequency Generation, using a Periodically Poled Lithium Niobate (PPLN) nonlinear crystal and a Silicon Avalanche Photodiode. An experimental investigation shows that, in addition to a high timing resolution, this technique yields a detection sensitivity of 1.24 pW with 63mW of net pump power.

quant-ph↗