- Tytuł:
- Experimental Investigation of Hot Carriers in Terahertz Quantum Cascade Lasers
- Autorzy:
-
Scamarcio, G.
Vitiello, M.
Spagnolo, V. - Powiązania:
- https://bibliotekanauki.pl/articles/1813187.pdf
- Data publikacji:
- 2008-03
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
42.55.Px
68.65.Fg - Opis:
- The nature of the electron distribution and the electron-lattice energy relaxation phenomena in all classes of quantum cascade lasers operating in the THz range, namely, resonant-phonon, bound-to-continuum, and interlaced photon-phonon designs are reviewed. Thermalized hot-electron distributions are found in all cases. However, electronic temperatures of individual conduction subband are strongly influenced by the specific quantum design and the actual electron-lattice energy relaxation channels. A wealth of information was obtained both below and above laser threshold from the analysis of micro-probe band-to-band photoluminescence spectra recorded with a spatial resolution of ≈2 μm. The influence of the detailed knowledge of the hot electron distributions on the design of improved THz quantum cascade lasers aiming at high temperature operation will be discussed.
- Źródło:
-
Acta Physica Polonica A; 2008, 113, 3; 787-794
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł