In this paper, the frequency characteristics of a tera-hertz quantum-cascade laser (QCL) operating around 2.5-THz in the pulsed regime have been studied by means of a heterodyne detection by using an optically pumped molecular laser as the local oscillator. The absolute frequency of the QCL can be determined with an accuracy of 1 MHz due to the pulse-to-pulse jitter of the QCL. The frequency tunability as a function of the injection current of the QCL is estimated to be around +2 GHz/A.
Autori interni: | |
Autori: | Beverini N; Carelli G; De Michele A; Moretti A; Mahler L; Tredicucci A; Beere HE; Ritchie DA |
Titolo: | Frequency characterization of a terahertz quantum-cascade laser |
Anno del prodotto: | 2007 |
Digital Object Identifier (DOI): | 10.1109/TIM.2007.891058 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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