Terahertz time domain spectroscopy of phonon-depopulation based quantum cascade lasers

Abstract

A 3.1THz phonon depopulation-based quantum-cascade-laser is investigated using terahertz time domain spectroscopy. A gain of 25cm<sup>-1</sup> and absorption features due to the lower laser level being populated from a parasitic electronic channel are highlighted.

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Cite this paper

@article{Dhillon2010TerahertzTD, title={Terahertz time domain spectroscopy of phonon-depopulation based quantum cascade lasers}, author={S S Dhillon and N Jukam and D Oustinov and J Madeo and R Colombelli and P Dean and M Salih and S P Khanna and Edmund Linfield and A G Davies and J Tignon}, journal={CLEO/QELS: 2010 Laser Science to Photonic Applications}, year={2010}, pages={1-2} }