Fabrizio Raphael Giorgetta

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We review our recent progress on the fabrication of near-infrared photodetectors based on intersubband transitions in AlN/GaN superlattice structures. Such devices were first demonstrated in 2003, and have since then seen a quite substantial development both in terms of detector responsivity and high speed operation. Nowadays, the most impressive results(More)
The instantaneous optical frequency of an external-cavity quantum cascade laser (QCL) is characterized by comparison to a near-infrared frequency comb. Fluctuations in the instantaneous optical frequency are analyzed to determine the frequency-noise power spectral density for the external-cavity QCL both during fixed-wavelength and swept-wavelength(More)
This review covers the physics, epitaxial growth, fabrication, and characterization of optoelectronic devices for use in video players and other consumer electronics as well as in commercial systems. ABSTRACT | We report on the physics, epitaxial growth, fabrication, and characterization of optoelectronic devices based on intersubband transitions in the(More)
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