D. I. Kryzhkov, S. V. Morozov, D. M. Gaponova, S. M. Sergeev, D. I. Kuritsyn, K. V. Marem'yanin, V. I. Gavrilenko, Yu. G. Sadof'ev, “Diagnostics of quantum cascade structures by optical methods in the near infrared region”, Fizika i Tekhnika Poluprovodnikov, 2012, Volume 46, Issue 11,Pages <nobr>1440

This article is cited in 2 papers

XVI Symposium "Nanophysics and Nanoelectronics", Nizhni Novgorod, March 12-16, 2012

Diagnostics of quantum cascade structures by optical methods in the near infrared region

D. I. Kryzhkov^a, S. V. Morozov^a, D. M. Gaponova^a, S. M. Sergeev^a, D. I. Kuritsyn^a, K. V. Marem'yanin^a, V. I. Gavrilenko^a, Yu. G. Sadof'ev^b

^a Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod
^b P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow

Abstract: The spectra and kinetics of the low-temperature interband photoluminescence of epitaxial structures of terahertz quantum cascade lasers is studied under conditions of strong pulsed excitation. Photoluminescence corresponding to transitions between both the ground and excited states of two tunnel-coupled wells is observed at high excitation levels (600 mW; spot diameter $\sim$200 $\mu$m). Kinetic measurements show that the rise and decay times significantly decrease up to the time resolution of the measuring system at wavelengths $<$ 770 nm with decreasing photoluminescence observation wavelength.

Received: 25.04.2012
Accepted: 25.04.2012