Talk:Quantum cascade laser
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[edit] Charge Carriers
The statement that electrons are the only charge carrier is ambiguous. Devices have been successfully demonstrated, which exploit intersubband transitions in the valence band. Of course, electron transport is taking place here, but one may refer to the process as hole transport when the majority of electron states in a band are occupied. I think the important point here is that intersubband transitions rather than interband transitions are taking place. - djsik 17:39, 11 March 2006 (UTC)
[edit] Device Fabrication
Although MBE is commonly used, I believe CVD is too. Does anyone know more about this? - djsik 17:39, 11 March 2006 (UTC)
[edit] Who is the inventor of QCL?
Orignal concept was published by Kazarinov and Suris in 1971 and then realized by the group at Bell Labs. I think the credit of invention should go to the original authors: "Possibility of amplification of electromagnetic waves in a semiconductor with a superlattice",Kazarinov, R.F.; Suris, R.A., Fizika i Tekhnika Poluprovodnikov April 1971, vol.5, no.4, pp. 797-800
