Title :
Room-temperature long-wavelength (λ=13.3 μm) unipolar quantum dot intersubband laser [and reply]
Author :
Weber, Andreas ; Grundmann, Marius ; Ledentsov, Nikolay N. ; Krishna, Sanjay ; Bhattacharya, Pallab ; McCann, P.J. ; Namjou, K.
Author_Institution :
Inst. fur Festkorperphys., Tech. Univ. Berlin
fDate :
1/18/2001 12:00:00 AM
Abstract :
For original paper see Krishna et al., ibid., vol. 36, p.1550-1555 (2000). Krishna et al. reported a “quantum dot far infrared (λ = 13.3 μm) laser, based on transitions between discrete bound electron states in self-organised quantum dots”. Weber et al. argue that insufficient experimental evidence for such a claim was presented in the work. Krishna et al. reply to the comment and report that they have carried out further work which makes them believe that they observe dominant stimulated emission and gain in these devices, with a distinct threshold and polarisation of the output
Keywords :
bound states; laser beams; laser transitions; light polarisation; photoluminescence; quantum well lasers; semiconductor quantum dots; stimulated emission; 13.3 mum; 298 K; comment; discrete bound electron states; distinct threshold; dominant stimulated emission; experimental evidence; gain; intersubband laser; laser output; polarisation; quantum dot far infrared laser; reply; room-temperature long-wavelength laser; self-organised quantum dots; transitions; unipolar quantum dot; unipolar quantum dot intersubband laser;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010055
