Terahertz time domain spectroscopy of phonon-depopulation based quantum cascade lasers
N. Jukam, S. S. Dhillon, D. Oustinov, J. Madeo, J. Tignon et al.
The gain and loss in a terahertz quantum cascade laser based on a longitudinal optical phonon depopulation scheme is studied using terahertz time domain spectroscopy. At laser threshold the gain is found to be clamped at 25 cm for a 1 mm long device and the full width at half maximum of the spectra ... [Appl. Phys. Lett. 94, 251108 (2009)] published Tue Jun 23, 2009.
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The gain and loss in a terahertz quantum cascade laser based on a longitudinal optical phonon depopulation scheme is studied using terahertz time domain spectroscopy. At laser threshold the gain is found to be clamped at 25 cm for a 1 mm long device and the full width at half maximum of the spectra ... [Appl. Phys. Lett. 94, 251108 (2009)] published Tue Jun 23, 2009.
Read full Article »
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