Electronic distribution in superlattice quantum cascade lasers

Applied Physics Letters

Volumn 77, Issue 8, 2000, Pages 1088-1090

  Troccoli, Mariano ^a   Scamarcio, Gaetano ^a   Spagnolo, Vincenzo ^a   Tredicucci, Alessandro ^b   Gmachl, Claire ^b   Capasso, Federico ^b   Sivco, Deborah L ^b   Cho, Alfred Y ^b   Striccoli, Marinella ^c  

^a POLITECNICO DI BARI   (Italy)

^b LUCENT TECHNOLOGIES   (United States)

^c Centro Laser Scrl   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001699459     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1289798     Document Type: Article

References (14)

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5. C. Gmachl, F. Capasso, A. Tredicucci, D. L. Sivco, R. Köhler, A. L. Hutchinson, and A. Y. Cho, IEEE J. Sel. Top. Quantum Electron. 5, 808 (1999).
6. For a comprehensive review on hot electron phenomena see Hot Electrons in Semiconductors: Physics and Devices, edited by N. Balkan (Clarendon, Oxford, 1998).
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8. For the In mole fractions, we used the values x = 0.55 and y = 0.49, assessed by x-ray diffraction and Raman scattering characterizations. These values, slightly different from lattice matched ones, correspond to a practically negligible 0.3% strain.
9. G. Scamarcio, M. Troccoli, F. Capasso, A. L. Hutchinson, D. L. Sivco, and A. Y. Cho, Proceedings of the 24th International Conference on the Physics of Semiconductors (ICPS 24) (World Scientific, Singapore, 1998).
10. A. Tredicucci, F. Capasso, C. Gmachl, D. L. Sivco, A. L. Hutchinson, A. Y. Cho, J. Faist, and G. Scamarcio, Appl. Phys. Lett. 72, 2388 (1998).
11. The samples were processed into 150-μm-diam mesas with alloyed ohmic contacts. The substrate was wedged at 45° to facilitate light collection. The devices, indium soldered onto copper holders and mounted into a closed-cycle He cryostat with ZnSe windows, were voltage driven at 40 kHz with 50% duty cycle. Midinfrared electroluminescence spectra were collected with an FTIR spectrometer operating in the step scan and lock-in mode, using ZnSe f/1 optics and a cooled HgCdTe detector.
12. G. Scamarcio, F. Capasso, J. Faist, C. Sirtori, D. L. Sivco, A. L. Hutchinson, and A. Y. Cho, Appl. Phys. Lett. 70, 1796 (1997).
13. V. Spagnolo, M. Troccoli, and G. Scamarcio (unpublished results).
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