Advanced characterization of the radiometric performances of quantum well infrared photodetectors

Electromagnetic modeling of multi-wavelength QWIP optical coupling structures

“…The goal of this modeling effort is to understand the optical coupling phenomena in grating-coupled multi-band QWIP architectures, including the effects substrate thinning and finite pixel size. Similar simulations have been performed by a number of other authors, [8][9][10][11][12][13][14][15][16] and we aim to augment the understanding that was gained in those investigations.…”

“…2) diffract the incoming radiation, and reflect radiation that is diffracted laterally by the grating. In combination with TIR by the thinned-substrate-air interface, these reflections cause lateral Fabry-Perot resonances to develop [14][15][16]20]. Fig.…”

Comparison of the electro-optical performances of MWIR InAs/GaSb superlattice pin photodiode and FPA with asymmetrical designs

“…Angular response current was measured with BRASIL test bench described in "Ribet et al" [14] and Figure 9. Compared to former test benches, this one uses a different mechanical interface.…”

Van Hove singularities in intersubband transitions in multiquantum well photodetectors

“…The commercial FTIR (Bruker, Equinox IFS55) produces either a reference spectrum (thanks to an internal reference detector with a known spectral response), or an external collimated beam of uniform intensity which is used to illuminate the detector. The angle of incidence on the sample may be adjusted from normal incidence to ±50° [6]. In fact the detector is put on a cold disc which is tilted with respect to the coldfinger with an angle of 50°in order to increase the signal noise ratio (see Fig.…”